biorxiv-mcp-server

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {},
  "additionalProperties": false
}

{
  "type": "object",
  "anyOf": [
    {
      "not": {
        "required": [
          "error"
        ]
      },
      "required": [
        "biorxiv",
        "medrxiv"
      ]
    },
    {
      "required": [
        "error"
      ]
    }
  ],
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "error": {
      "type": "object",
      "required": [
        "code",
        "message"
      ],
      "properties": {
        "code": {
          "type": "integer",
          "maximum": 9007199254740991,
          "minimum": -9007199254740991,
          "description": "JSON-RPC error code for this failure."
        },
        "data": {
          "type": "object",
          "properties": {
            "reason": {
              "type": "string",
              "description": "Machine-readable failure mode."
            },
            "recovery": {
              "type": "object",
              "required": [
                "hint"
              ],
              "properties": {
                "hint": {
                  "type": "string"
                }
              },
              "description": "Actionable next step for the caller.",
              "additionalProperties": {}
            },
            "retryable": {
              "type": "boolean",
              "description": "Whether retrying may succeed."
            }
          },
          "additionalProperties": {}
        },
        "message": {
          "type": "string",
          "description": "Human-readable description of what went wrong."
        }
      },
      "description": "Present when the call failed. Absent on success.",
      "additionalProperties": {}
    },
    "biorxiv": {
      "type": "array",
      "items": {
        "type": "string",
        "description": "Subject category name"
      },
      "description": "bioRxiv subject categories"
    },
    "medrxiv": {
      "type": "array",
      "items": {
        "type": "string",
        "description": "Subject category name"
      },
      "description": "medRxiv subject categories"
    }
  },
  "additionalProperties": false
}

{
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true
}

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "start_date",
    "end_date"
  ],
  "properties": {
    "cursor": {
      "type": "integer",
      "default": 0,
      "maximum": 9007199254740991,
      "minimum": 0,
      "description": "Integer page offset (0, 30, 60, …). Defaults to 0 (first page)."
    },
    "funder": {
      "type": "string",
      "description": "Funder filter: the funder's ROR ID, bare (\"021nxhr62\" for the US National Science Foundation) or as a URL (\"https://ror.org/021nxhr62\"). bioRxiv only — medRxiv records carry no funder data, so server=\"both\" queries bioRxiv alone and server=\"medrxiv\" is rejected. Combines with category. Look the ID up by name at ror.org."
    },
    "server": {
      "enum": [
        "biorxiv",
        "medrxiv",
        "both"
      ],
      "type": "string",
      "default": "both",
      "description": "Server to query. \"both\" fans out to bioRxiv and medRxiv in parallel."
    },
    "category": {
      "type": "string",
      "description": "Subject category filter, matched case-insensitively with \"_\" and \"-\" read as a space — \"Cell Biology\", \"cell biology\", \"cell_biology\", and \"cell-biology\" are the same filter. Use biorxiv_list_categories for valid values."
    },
    "end_date": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      "description": "End of the date interval (YYYY-MM-DD)."
    },
    "start_date": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      "description": "Start of the date interval (YYYY-MM-DD)."
    },
    "include_abstract": {
      "type": "boolean",
      "default": false,
      "description": "Include each preprint's abstract. Defaults to false: abstracts make up about three quarters of a page, and every other field is returned either way."
    }
  },
  "additionalProperties": false
}

{
  "type": "object",
  "anyOf": [
    {
      "not": {
        "required": [
          "error"
        ]
      },
      "required": [
        "preprints",
        "pagination",
        "failed"
      ]
    },
    {
      "required": [
        "error"
      ]
    }
  ],
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "error": {
      "type": "object",
      "required": [
        "code",
        "message"
      ],
      "properties": {
        "code": {
          "type": "integer",
          "maximum": 9007199254740991,
          "minimum": -9007199254740991,
          "description": "JSON-RPC error code for this failure."
        },
        "data": {
          "type": "object",
          "properties": {
            "reason": {
              "type": "string",
              "examples": [
                "invalid_date_range",
                "invalid_category",
                "invalid_funder",
                "upstream_unavailable",
                "rate_limited"
              ],
              "description": "Machine-readable failure mode. Declared by this tool: `invalid_date_range`: end_date is before start_date, or either date names no calendar day (2024-02-30, 2024-13-01). `invalid_category`: The category is not in the requested server's taxonomy, or api.biorxiv.org ignored it and returned the unfiltered listing on every server that answered. `invalid_funder`: funder is not a well-formed ROR ID (pattern or checksum), is combined with server=\"medrxiv\", or is a ROR ID api.biorxiv.org has no funder record for. `upstream_unavailable`: Every attempted server failed against api.biorxiv.org, so no page was retrieved and an empty interval could not be established. `rate_limited`: Every attempted server failed and at least one was rejected with HTTP 429 by api.biorxiv.org. Other values are possible when a failure originates below the handler."
            },
            "recovery": {
              "type": "object",
              "required": [
                "hint"
              ],
              "properties": {
                "hint": {
                  "type": "string"
                }
              },
              "description": "Actionable next step for the caller.",
              "additionalProperties": {}
            },
            "retryable": {
              "type": "boolean",
              "description": "Whether retrying may succeed."
            }
          },
          "additionalProperties": {}
        },
        "message": {
          "type": "string",
          "description": "Human-readable description of what went wrong."
        }
      },
      "description": "Present when the call failed. Absent on success.",
      "additionalProperties": {}
    },
    "failed": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "server",
          "error"
        ],
        "properties": {
          "error": {
            "type": "string",
            "description": "What went wrong on that server."
          },
          "server": {
            "enum": [
              "biorxiv",
              "medrxiv"
            ],
            "type": "string",
            "description": "Server whose listing request failed."
          }
        },
        "description": "A server that did not answer.",
        "additionalProperties": false
      },
      "description": "Servers that did not answer, so their records are missing from \"preprints\" and they have no \"pagination\" entry. Non-empty means this result set is partial — retry to include them. Only populated when server=\"both\", and never holding every attempted server: when none answered, the call fails with upstream_unavailable or rate_limited instead of returning a page. A single-server failure likewise surfaces as a tool error. Distinct from an exhausted pagination entry, where the server answered."
    },
    "notice": {
      "type": "string",
      "description": "Guidance on how to read this result set: which servers did not answer, which ignored the category filter (their unfiltered records are left out), that a funder filter limited server=\"both\" to bioRxiv, which cursors are past the end, and — when nothing came back — the applied filters and how to broaden them. All applicable qualifications are composed into one string."
    },
    "preprints": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "doi",
          "server"
        ],
        "properties": {
          "doi": {
            "type": "string",
            "description": "Preprint DOI."
          },
          "date": {
            "type": "string",
            "description": "Posting or revision date (YYYY-MM-DD)."
          },
          "type": {
            "type": "string",
            "description": "Preprint type."
          },
          "title": {
            "type": "string",
            "description": "Title of the preprint."
          },
          "awards": {
            "type": "array",
            "items": {
              "type": "string",
              "description": "One award value as upstream records it."
            },
            "description": "Grant award numbers from the funding statement, verbatim and deduplicated — one value can hold several grants run together without a separator. Absent when none. Funder names are not included: api.biorxiv.org attributes them to unrelated organizations."
          },
          "server": {
            "enum": [
              "biorxiv",
              "medrxiv"
            ],
            "type": "string",
            "description": "Server the preprint was listed on — accepted as the server input of every tool."
          },
          "authors": {
            "type": "string",
            "description": "Author list."
          },
          "license": {
            "type": "string",
            "description": "License identifier."
          },
          "version": {
            "type": "string",
            "description": "Revision version number."
          },
          "abstract": {
            "type": "string",
            "description": "The preprint's latest-revision abstract, which differs from this row's own revision when a later one exists — api.biorxiv.org keeps one abstract per preprint. Present only when include_abstract is true."
          },
          "category": {
            "type": "string",
            "description": "Subject category."
          },
          "jatsxmlUrl": {
            "type": "string",
            "description": "URL to the JATS XML full-text."
          },
          "authorCorresponding": {
            "type": "string",
            "description": "Corresponding author name."
          },
          "publishedJournalDoi": {
            "type": "string",
            "description": "Published journal DOI when this preprint has been accepted."
          },
          "authorCorrespondingInstitution": {
            "type": "string",
            "description": "Corresponding author institution."
          }
        },
        "description": "A single preprint entry.",
        "additionalProperties": false
      },
      "description": "Preprints in the requested date interval."
    },
    "pagination": {
      "type": "object",
      "properties": {
        "biorxiv": {
          "type": "object",
          "required": [
            "cursor",
            "total"
          ],
          "properties": {
            "total": {
              "type": "number",
              "description": "Rows bioRxiv lists in the interval for these filters — one per revision posted in it, so a preprint revised in the interval counts once per version. For the number of new preprints, read newPreprints."
            },
            "cursor": {
              "type": "number",
              "description": "Current cursor (offset used for this page)."
            },
            "exhausted": {
              "type": "boolean",
              "description": "True when this cursor is past bioRxiv's last page: no records came back at a non-zero cursor. The API reports total 0 for an out-of-range cursor, so \"total\" is not the interval total here — step back to a lower cursor to read it."
            },
            "nextCursor": {
              "type": "number",
              "description": "Cursor value for the next page, if any."
            },
            "newPreprints": {
              "type": "integer",
              "maximum": 9007199254740991,
              "minimum": -9007199254740991,
              "description": "Preprints whose first version posted on bioRxiv in the interval, for these filters — the rows with version \"1\" across every page of the listing, as bioRxiv counts them. Absent when bioRxiv reports no count, as on an exhausted entry; never a 0 standing in for an unknown count."
            }
          },
          "description": "bioRxiv pagination state. Present when server is \"biorxiv\" or \"both\".",
          "additionalProperties": false
        },
        "medrxiv": {
          "type": "object",
          "required": [
            "cursor",
            "total"
          ],
          "properties": {
            "total": {
              "type": "number",
              "description": "Rows medRxiv lists in the interval for these filters — one per revision posted in it, so a preprint revised in the interval counts once per version. For the number of new preprints, read newPreprints."
            },
            "cursor": {
              "type": "number",
              "description": "Current cursor (offset used for this page)."
            },
            "exhausted": {
              "type": "boolean",
              "description": "True when this cursor is past medRxiv's last page: no records came back at a non-zero cursor. The API reports total 0 for an out-of-range cursor, so \"total\" is not the interval total here — step back to a lower cursor to read it."
            },
            "nextCursor": {
              "type": "number",
              "description": "Cursor value for the next page, if any."
            },
            "newPreprints": {
              "type": "integer",
              "maximum": 9007199254740991,
              "minimum": -9007199254740991,
              "description": "Preprints whose first version posted on medRxiv in the interval, for these filters — the rows with version \"1\" across every page of the listing, as medRxiv counts them. Absent when medRxiv reports no count, as on an exhausted entry; never a 0 standing in for an unknown count."
            }
          },
          "description": "medRxiv pagination state. Present when server is \"medrxiv\" or \"both\", except under a funder filter, which queries bioRxiv only.",
          "additionalProperties": false
        }
      },
      "description": "Per-server pagination state. Advance each server independently.",
      "additionalProperties": false
    },
    "categoryNote": {
      "type": "string",
      "description": "Present when server=\"both\" and the category exists in only one server's taxonomy. Explains which server was queried and why the other was excluded."
    }
  },
  "additionalProperties": false
}

{
  "readOnlyHint": true,
  "openWorldHint": true
}

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "dois"
  ],
  "properties": {
    "dois": {
      "type": "array",
      "items": {
        "type": "string",
        "description": "Preprint DOI (e.g. 10.1101/2024.01.15.575123 or 10.64898/2026.05.07.723463). A doi.org or biorxiv.org/medrxiv.org article URL, a doi: prefix, or a vN / .full suffix is accepted and stripped to the bare DOI; every revision is returned either way."
      },
      "maxItems": 200,
      "minItems": 1,
      "description": "Preprint DOIs to look up, up to 200 entries. The first 10 distinct DOIs are looked up; the rest are returned in unprocessed."
    },
    "server": {
      "enum": [
        "biorxiv",
        "medrxiv",
        "both"
      ],
      "type": "string",
      "default": "both",
      "description": "Server to query. \"both\" checks bioRxiv and medRxiv in parallel for each DOI."
    }
  },
  "additionalProperties": false
}

{
  "type": "object",
  "anyOf": [
    {
      "not": {
        "required": [
          "error"
        ]
      },
      "required": [
        "preprints",
        "failed",
        "unprocessed"
      ]
    },
    {
      "required": [
        "error"
      ]
    }
  ],
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "cap": {
      "type": "number",
      "description": "The most distinct DOIs one call looks up."
    },
    "error": {
      "type": "object",
      "required": [
        "code",
        "message"
      ],
      "properties": {
        "code": {
          "type": "integer",
          "maximum": 9007199254740991,
          "minimum": -9007199254740991,
          "description": "JSON-RPC error code for this failure."
        },
        "data": {
          "type": "object",
          "properties": {
            "reason": {
              "type": "string",
              "examples": [
                "doi_not_found",
                "invalid_doi_format",
                "upstream_unavailable",
                "rate_limited"
              ],
              "description": "Machine-readable failure mode. Declared by this tool: `doi_not_found`: Every DOI looked up resolves to empty collections on all requested servers, with every server answering, and no DOI was left in unprocessed. `invalid_doi_format`: Every input entry fails to match the 10.NNNN/ pattern, even after URL, doi:, and suffix stripping. `upstream_unavailable`: No DOI resolved, none was left in unprocessed, and at least one lookup failed against api.biorxiv.org, so absence could not be established for any requested DOI. `rate_limited`: No DOI resolved, none was left in unprocessed, and at least one lookup was rejected with HTTP 429 by api.biorxiv.org. Other values are possible when a failure originates below the handler."
            },
            "recovery": {
              "type": "object",
              "required": [
                "hint"
              ],
              "properties": {
                "hint": {
                  "type": "string"
                }
              },
              "description": "Actionable next step for the caller.",
              "additionalProperties": {}
            },
            "retryable": {
              "type": "boolean",
              "description": "Whether retrying may succeed."
            }
          },
          "additionalProperties": {}
        },
        "message": {
          "type": "string",
          "description": "Human-readable description of what went wrong."
        }
      },
      "description": "Present when the call failed. Absent on success.",
      "additionalProperties": {}
    },
    "shown": {
      "type": "number",
      "description": "Distinct DOIs looked up in this call."
    },
    "failed": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "doi",
          "error",
          "reason",
          "retryable"
        ],
        "properties": {
          "doi": {
            "type": "string",
            "description": "DOI that failed to resolve — in bare form, or exactly as sent for invalid_doi_format."
          },
          "error": {
            "type": "string",
            "description": "Error description."
          },
          "reason": {
            "enum": [
              "not_found",
              "invalid_doi_format",
              "upstream_unavailable",
              "rate_limited"
            ],
            "type": "string",
            "description": "Why this DOI failed: not_found (every attempted server answered with an empty collection), invalid_doi_format (the DOI does not match 10.NNNN/…), upstream_unavailable (a server never answered, so absence could not be established), or rate_limited (api.biorxiv.org returned HTTP 429 — the same as upstream_unavailable except that the origin named a wait)."
          },
          "retryable": {
            "type": "boolean",
            "description": "True when retrying this DOI may succeed — set for upstream_unavailable and rate_limited. A not_found or invalid_doi_format entry will not change on retry."
          },
          "retryAfter": {
            "type": "number",
            "description": "Seconds api.biorxiv.org asked the caller to wait before the next request. Present only on a rate_limited entry whose response carried a usable Retry-After header."
          }
        },
        "description": "A DOI that failed to resolve.",
        "additionalProperties": false
      },
      "description": "DOIs that could not be resolved, with per-DOI error details."
    },
    "notice": {
      "type": "string",
      "description": "How to look up the DOIs left in unprocessed, and how many failed[] entries are retryable alongside them."
    },
    "preprints": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "doi",
          "revisions"
        ],
        "properties": {
          "doi": {
            "type": "string",
            "description": "The requested DOI in bare form (any URL, doi: prefix, or suffix removed)."
          },
          "revisions": {
            "type": "array",
            "items": {
              "type": "object",
              "required": [
                "doi",
                "server"
              ],
              "properties": {
                "doi": {
                  "type": "string",
                  "description": "Preprint DOI."
                },
                "date": {
                  "type": "string",
                  "description": "Revision date (YYYY-MM-DD)."
                },
                "type": {
                  "type": "string",
                  "description": "Preprint type."
                },
                "title": {
                  "type": "string",
                  "description": "Title."
                },
                "awards": {
                  "type": "array",
                  "items": {
                    "type": "string",
                    "description": "One award value as upstream records it."
                  },
                  "description": "Grant award numbers from the funding statement, verbatim and deduplicated — one value can hold several grants run together without a separator. Absent when none. Funder names are not included: api.biorxiv.org attributes them to unrelated organizations."
                },
                "server": {
                  "enum": [
                    "biorxiv",
                    "medrxiv"
                  ],
                  "type": "string",
                  "description": "Server the revision was found on — accepted as the server input of every tool."
                },
                "authors": {
                  "type": "string",
                  "description": "Author list."
                },
                "license": {
                  "type": "string",
                  "description": "License identifier."
                },
                "version": {
                  "type": "string",
                  "description": "Revision version number."
                },
                "abstract": {
                  "type": "string",
                  "description": "The preprint's current abstract, present on the latest revision only: api.biorxiv.org keeps one abstract per preprint and repeats it on every revision. For an earlier revision's own abstract, read that revision with biorxiv_get_fulltext and its version input; medRxiv blocks its article pages to some hosts, and there that request fails as fulltext_unavailable."
                },
                "category": {
                  "type": "string",
                  "description": "Subject category."
                },
                "jatsxmlUrl": {
                  "type": "string",
                  "description": "URL to the JATS XML full-text."
                },
                "authorCorresponding": {
                  "type": "string",
                  "description": "Corresponding author name."
                },
                "publishedJournalDoi": {
                  "type": "string",
                  "description": "Published journal DOI when accepted."
                },
                "authorCorrespondingInstitution": {
                  "type": "string",
                  "description": "Corresponding author institution."
                }
              },
              "description": "A single preprint revision.",
              "additionalProperties": false
            },
            "description": "All revisions for this preprint, earliest first."
          }
        },
        "description": "A preprint and all its revisions.",
        "additionalProperties": false
      },
      "description": "Successfully resolved preprints with their full revision history."
    },
    "truncated": {
      "type": "boolean",
      "description": "True when DOIs past the first 10 were left in unprocessed."
    },
    "unprocessed": {
      "type": "array",
      "items": {
        "type": "string",
        "description": "A bare DOI that was not looked up."
      },
      "description": "Valid, distinct DOIs past the first 10, in input order — not looked up, so neither found nor failed. Pass this list as dois in another call to continue. Empty when every DOI was looked up."
    }
  },
  "additionalProperties": false
}

{
  "readOnlyHint": true,
  "openWorldHint": true,
  "idempotentHint": true
}

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "doi"
  ],
  "properties": {
    "doi": {
      "type": "string",
      "description": "DOI to resolve: a preprint DOI (e.g. 10.1101/2024.01.15.575123 or 10.64898/2026.05.07.723463) or a journal article DOI (e.g. 10.1016/j.cell.2020.01.001). A doi.org or biorxiv.org/medrxiv.org article URL or a doi: prefix is accepted and stripped to the bare DOI, as is a vN, .full, or .pdf suffix; a journal DOI keeps its own components (10.7554/eLife.55185.sa1 is not 10.7554/eLife.55185). Cold Spring Harbor Laboratory Press journal DOIs (10.1101/gr.…, 10.1101/gad.…, 10.1101/lm.…) share the preprint prefix and cannot be resolved by DOI."
    },
    "server": {
      "enum": [
        "biorxiv",
        "medrxiv",
        "both"
      ],
      "type": "string",
      "default": "both",
      "description": "Server the preprint was posted on. \"both\" (default) checks bioRxiv and medRxiv in parallel — use it when the DOI alone does not tell you which server holds the preprint."
    }
  },
  "additionalProperties": false
}

{
  "type": "object",
  "anyOf": [
    {
      "not": {
        "required": [
          "error"
        ]
      },
      "required": [
        "preprintDoi",
        "server"
      ]
    },
    {
      "required": [
        "error"
      ]
    }
  ],
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "error": {
      "type": "object",
      "required": [
        "code",
        "message"
      ],
      "properties": {
        "code": {
          "type": "integer",
          "maximum": 9007199254740991,
          "minimum": -9007199254740991,
          "description": "JSON-RPC error code for this failure."
        },
        "data": {
          "type": "object",
          "properties": {
            "reason": {
              "type": "string",
              "examples": [
                "doi_not_found",
                "invalid_doi_format",
                "upstream_unavailable",
                "rate_limited"
              ],
              "description": "Machine-readable failure mode. Declared by this tool: `doi_not_found`: No attempted server holds the preprint, neither the crosswalk nor its preprint record lists a journal version, or the crosswalk links no preprint to the journal DOI given. `invalid_doi_format`: The input does not match the 10.NNNN/ DOI pattern, even after URL, doi:, and suffix stripping. `upstream_unavailable`: No published record was established and at least one crosswalk or preprint lookup failed against api.biorxiv.org. `rate_limited`: No published record was established and at least one crosswalk or preprint lookup was rejected with HTTP 429 by api.biorxiv.org. Other values are possible when a failure originates below the handler."
            },
            "recovery": {
              "type": "object",
              "required": [
                "hint"
              ],
              "properties": {
                "hint": {
                  "type": "string"
                }
              },
              "description": "Actionable next step for the caller.",
              "additionalProperties": {}
            },
            "retryable": {
              "type": "boolean",
              "description": "Whether retrying may succeed."
            }
          },
          "additionalProperties": {}
        },
        "message": {
          "type": "string",
          "description": "Human-readable description of what went wrong."
        }
      },
      "description": "Present when the call failed. Absent on success.",
      "additionalProperties": {}
    },
    "notice": {
      "type": "string",
      "description": "Present when publishedDoi came from the preprint's own record because the crosswalk had none: says why publishedJournal and publishedDate are absent."
    },
    "server": {
      "enum": [
        "biorxiv",
        "medrxiv"
      ],
      "type": "string",
      "description": "The server that returned this published record — never \"both\"."
    },
    "preprintDoi": {
      "type": "string",
      "description": "The preprint DOI, in bare form: the input itself when it was a preprint DOI, or the preprint the crosswalk links to the input when it was a journal DOI."
    },
    "preprintDate": {
      "type": "string",
      "description": "Preprint posting date (YYYY-MM-DD) from the crosswalk record, or from the preprint's first revision when the crosswalk has none — the first posting for most preprints. medRxiv records some 10.64898/ preprints twice with different posting dates; this is the first record listed."
    },
    "publishedDoi": {
      "type": "string",
      "description": "The journal publication DOI."
    },
    "preprintTitle": {
      "type": "string",
      "description": "Title of the preprint."
    },
    "publishedDate": {
      "type": "string",
      "description": "Journal publication date (YYYY-MM-DD). Absent when the crosswalk holds no record for this preprint — see notice."
    },
    "preprintAuthors": {
      "type": "string",
      "description": "Preprint author list."
    },
    "preprintAbstract": {
      "type": "string",
      "description": "Preprint abstract."
    },
    "preprintCategory": {
      "type": "string",
      "description": "Subject category."
    },
    "publishedJournal": {
      "type": "string",
      "description": "Name of the publishing journal. Absent when the crosswalk holds no record for this preprint — see notice."
    },
    "preprintAuthorCorresponding": {
      "type": "string",
      "description": "Corresponding author name."
    },
    "preprintAuthorCorrespondingInstitution": {
      "type": "string",
      "description": "Corresponding author institution."
    }
  },
  "additionalProperties": false
}

{
  "readOnlyHint": true,
  "openWorldHint": true,
  "idempotentHint": true
}

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "start_date",
    "end_date"
  ],
  "properties": {
    "limit": {
      "type": "integer",
      "default": 25,
      "maximum": 1000,
      "minimum": 1,
      "description": "Rows to return per queried server, starting at cursor. Defaults to 25. Up to 100, the page api.biorxiv.org serves: a larger value returns 100 rows per server and says so in the notice. limit: 100 walks an interval in the fewest calls."
    },
    "cursor": {
      "type": "integer",
      "default": 0,
      "maximum": 9007199254740991,
      "minimum": 0,
      "description": "Integer row offset, applied to each queried server. Defaults to 0 (first page). To continue, pass the nextCursor the previous page returned for that server — it advances by the rows actually served."
    },
    "server": {
      "enum": [
        "biorxiv",
        "medrxiv",
        "both"
      ],
      "type": "string",
      "default": "both",
      "description": "Preprint server to list. \"both\" lists bioRxiv and medRxiv in parallel; their rows do not overlap."
    },
    "end_date": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      "description": "End of the journal publication-date interval (YYYY-MM-DD), inclusive."
    },
    "publisher": {
      "type": "string",
      "pattern": "^10\\.\\d{4,}$",
      "description": "Journal publisher filter: the DOI prefix its journal articles share, the part before the slash — \"10.7554\" for eLife, \"10.1016\" for Elsevier. Lists only the bioRxiv preprints published under that prefix: medRxiv has no publisher listing, so server=\"both\" queries bioRxiv alone and server=\"medrxiv\" is rejected. Rows listed this way carry no journal name, authors, corresponding author, or abstract."
    },
    "start_date": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      "description": "Start of the journal publication-date interval (YYYY-MM-DD), inclusive."
    },
    "include_abstract": {
      "type": "boolean",
      "default": false,
      "description": "Include each preprint's abstract. Defaults to false: abstracts make up about three quarters of a page, and every other field is returned either way."
    }
  },
  "additionalProperties": false
}

{
  "type": "object",
  "anyOf": [
    {
      "not": {
        "required": [
          "error"
        ]
      },
      "required": [
        "publications",
        "pagination",
        "failed"
      ]
    },
    {
      "required": [
        "error"
      ]
    }
  ],
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "cap": {
      "type": "number",
      "description": "Most publications this page can hold: rows per server (limit, or 100 when limit asked for more) times the servers queried. Set with truncated."
    },
    "error": {
      "type": "object",
      "required": [
        "code",
        "message"
      ],
      "properties": {
        "code": {
          "type": "integer",
          "maximum": 9007199254740991,
          "minimum": -9007199254740991,
          "description": "JSON-RPC error code for this failure."
        },
        "data": {
          "type": "object",
          "properties": {
            "reason": {
              "type": "string",
              "examples": [
                "invalid_date_range",
                "invalid_publisher",
                "upstream_unavailable",
                "rate_limited"
              ],
              "description": "Machine-readable failure mode. Declared by this tool: `invalid_date_range`: start_date or end_date is not a real calendar date (2024-02-30, 2024-13-01), or end_date is before start_date. `invalid_publisher`: publisher is combined with server=\"medrxiv\", or is a prefix api.biorxiv.org does not recognize. `upstream_unavailable`: Every attempted server failed against api.biorxiv.org, so no page was retrieved and an empty interval could not be established. `rate_limited`: Every attempted server failed and at least one was rejected with HTTP 429 by api.biorxiv.org. Other values are possible when a failure originates below the handler."
            },
            "recovery": {
              "type": "object",
              "required": [
                "hint"
              ],
              "properties": {
                "hint": {
                  "type": "string"
                }
              },
              "description": "Actionable next step for the caller.",
              "additionalProperties": {}
            },
            "retryable": {
              "type": "boolean",
              "description": "Whether retrying may succeed."
            }
          },
          "additionalProperties": {}
        },
        "message": {
          "type": "string",
          "description": "Human-readable description of what went wrong."
        }
      },
      "description": "Present when the call failed. Absent on success.",
      "additionalProperties": {}
    },
    "shown": {
      "type": "number",
      "description": "Publications on this page, across every server queried. Set with truncated."
    },
    "failed": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "server",
          "error"
        ],
        "properties": {
          "error": {
            "type": "string",
            "description": "What went wrong on that server."
          },
          "server": {
            "enum": [
              "biorxiv",
              "medrxiv"
            ],
            "type": "string",
            "description": "Server whose request failed."
          }
        },
        "description": "A server that did not answer.",
        "additionalProperties": false
      },
      "description": "Servers that did not answer, so their rows are missing from \"publications\" and they have no \"pagination\" entry. Non-empty means this result set is partial — retry to include them. Only populated under server=\"both\", and never holding every attempted server: when none answered, the call fails with upstream_unavailable or rate_limited instead. Distinct from an exhausted pagination entry, where the server answered."
    },
    "notice": {
      "type": "string",
      "description": "Guidance on how to read this result set: which servers did not answer, that a publisher filter limited server=\"both\" to bioRxiv and which fields its rows lack, a limit above the 100-row page, which cursors are past the end, which servers have rows past this page, and — when nothing came back — the interval and how to broaden it. All applicable qualifications are composed into one string."
    },
    "truncated": {
      "type": "boolean",
      "description": "True when at least one server has rows past this page — continue at that server's nextCursor. Absent when every server queried is on its last page."
    },
    "pagination": {
      "type": "object",
      "properties": {
        "biorxiv": {
          "type": "object",
          "required": [
            "cursor"
          ],
          "properties": {
            "total": {
              "type": "number",
              "description": "Journal publications on bioRxiv in the interval. Absent only when the entry is exhausted: bioRxiv reports no total for a cursor past its last row."
            },
            "cursor": {
              "type": "number",
              "description": "Cursor (row offset) this page was requested at."
            },
            "exhausted": {
              "type": "boolean",
              "description": "True when the cursor is at or past bioRxiv's last row: no rows came back at a non-zero cursor. Lower the cursor to page bioRxiv."
            },
            "nextCursor": {
              "type": "number",
              "description": "Cursor for the next page, when rows remain on bioRxiv past this one: this page's cursor plus the rows it served. Pass it as cursor to continue, at any limit."
            }
          },
          "description": "bioRxiv pagination state. Present when bioRxiv was queried and answered.",
          "additionalProperties": false
        },
        "medrxiv": {
          "type": "object",
          "required": [
            "cursor"
          ],
          "properties": {
            "total": {
              "type": "number",
              "description": "Journal publications on medRxiv in the interval. Absent only when the entry is exhausted: medRxiv reports no total for a cursor past its last row."
            },
            "cursor": {
              "type": "number",
              "description": "Cursor (row offset) this page was requested at."
            },
            "exhausted": {
              "type": "boolean",
              "description": "True when the cursor is at or past medRxiv's last row: no rows came back at a non-zero cursor. Lower the cursor to page medRxiv."
            },
            "nextCursor": {
              "type": "number",
              "description": "Cursor for the next page, when rows remain on medRxiv past this one: this page's cursor plus the rows it served. Pass it as cursor to continue, at any limit."
            }
          },
          "description": "medRxiv pagination state. Present when medRxiv was queried and answered.",
          "additionalProperties": false
        }
      },
      "description": "Per-server pagination state. Advance each server independently.",
      "additionalProperties": false
    },
    "publications": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "server",
          "preprintDoi"
        ],
        "properties": {
          "server": {
            "enum": [
              "biorxiv",
              "medrxiv"
            ],
            "type": "string",
            "description": "Preprint server that listed this publication."
          },
          "preprintDoi": {
            "type": "string",
            "description": "Preprint DOI — input to biorxiv_get_preprint and the other DOI tools."
          },
          "preprintDate": {
            "type": "string",
            "description": "Preprint posting date (YYYY-MM-DD) as this row records it — the first posting for most preprints. medRxiv lists some 10.64898/ preprints on two rows that differ in this date, and sometimes in title or authors; both rows are returned. Not derivable from the DOI."
          },
          "publishedDoi": {
            "type": "string",
            "description": "Journal article DOI."
          },
          "preprintTitle": {
            "type": "string",
            "description": "Title of the preprint."
          },
          "publishedDate": {
            "type": "string",
            "description": "Journal publication date (YYYY-MM-DD), within the requested interval."
          },
          "preprintAuthors": {
            "type": "string",
            "description": "Preprint author list. Absent under a publisher filter."
          },
          "preprintAbstract": {
            "type": "string",
            "description": "Preprint abstract. Present only when include_abstract is true, and never under a publisher filter."
          },
          "preprintCategory": {
            "type": "string",
            "description": "Subject category."
          },
          "publishedJournal": {
            "type": "string",
            "description": "Name of the publishing journal. Absent under a publisher filter, whose rows carry none."
          },
          "preprintAuthorCorresponding": {
            "type": "string",
            "description": "Corresponding author name. Absent under a publisher filter."
          },
          "preprintAuthorCorrespondingInstitution": {
            "type": "string",
            "description": "Corresponding author institution. Absent under a publisher filter."
          }
        },
        "description": "One preprint and the journal article it became.",
        "additionalProperties": false
      },
      "description": "Publications in the interval, in upstream order: bioRxiv rows first, then medRxiv rows."
    }
  },
  "additionalProperties": false
}

{
  "readOnlyHint": true,
  "openWorldHint": true
}

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "limit": {
      "type": "integer",
      "default": 25,
      "maximum": 1000,
      "minimum": 1,
      "description": "Maximum results to return. Defaults to 25. Up to 100 per call: a larger value returns the first 100 and says so, and nextCursorMark continues the ranked list."
    },
    "query": {
      "type": "string",
      "description": "Keyword search query. Optional when author is provided — supply at least one of query or author."
    },
    "author": {
      "type": "string",
      "description": "Author name to filter by, mapped to an EuropePMC AUTH:\"…\" field query and ANDed with the keyword query. Optional when query is provided (e.g. \"Jennifer Doudna\")."
    },
    "server": {
      "enum": [
        "biorxiv",
        "medrxiv",
        "both"
      ],
      "type": "string",
      "default": "both",
      "description": "Server scope for the search and its enrichment: \"biorxiv\" or \"medrxiv\" returns only that server's preprints; \"both\" searches both and checks each matching DOI on both servers."
    },
    "date_to": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      "description": "Latest first-publication date filter (YYYY-MM-DD)."
    },
    "date_from": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      "description": "Earliest first-publication date filter (YYYY-MM-DD)."
    },
    "cursor_mark": {
      "type": "string",
      "description": "Opaque page token for ranked EuropePMC results. Omit for the first page; pass the nextCursorMark returned by a prior call to fetch the next page. Pages through the same ranked list rather than raising limit. A token EuropePMC does not recognize fails with invalid_cursor_mark."
    },
    "include_abstract": {
      "type": "boolean",
      "default": true,
      "description": "Include each result's abstract. Defaults to true. false omits the abstract from every result, enriched and EuropePMC-fallback alike, and keeps every other field."
    }
  },
  "additionalProperties": false
}

{
  "type": "object",
  "anyOf": [
    {
      "not": {
        "required": [
          "error"
        ]
      },
      "required": [
        "preprints",
        "partial_results",
        "totalCount",
        "queryEcho"
      ]
    },
    {
      "required": [
        "error"
      ]
    }
  ],
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "cap": {
      "type": "number",
      "description": "Results one call returns at most (100). Set with truncated."
    },
    "error": {
      "type": "object",
      "required": [
        "code",
        "message"
      ],
      "properties": {
        "code": {
          "type": "integer",
          "maximum": 9007199254740991,
          "minimum": -9007199254740991,
          "description": "JSON-RPC error code for this failure."
        },
        "data": {
          "type": "object",
          "properties": {
            "reason": {
              "type": "string",
              "examples": [
                "invalid_date_range",
                "search_unavailable",
                "invalid_cursor_mark",
                "rate_limited"
              ],
              "description": "Machine-readable failure mode. Declared by this tool: `invalid_date_range`: date_from or date_to is not a real calendar date (2024-02-30, 2024-13-01), or date_from is after date_to. `search_unavailable`: EuropePMC search endpoint is unreachable, returns a server error, or answers without a result list on every retry. On a cursor_mark page, HTTP 503 or a missing result list on every retry is this reason only when the first page of the same query fails too, or no time is left to check it. `invalid_cursor_mark`: EuropePMC answers a cursor_mark page with HTTP 503 or without a result list on every retry while the first page of the same query answers — the token is malformed or not one EuropePMC issued. `rate_limited`: The EuropePMC search endpoint rejected the keyword search with HTTP 429. Distinct from a rate-limited enrichment call, which degrades to EuropePMC-only metadata instead of failing. Other values are possible when a failure originates below the handler."
            },
            "recovery": {
              "type": "object",
              "required": [
                "hint"
              ],
              "properties": {
                "hint": {
                  "type": "string"
                }
              },
              "description": "Actionable next step for the caller.",
              "additionalProperties": {}
            },
            "retryable": {
              "type": "boolean",
              "description": "Whether retrying may succeed."
            }
          },
          "additionalProperties": {}
        },
        "message": {
          "type": "string",
          "description": "Human-readable description of what went wrong."
        }
      },
      "description": "Present when the call failed. Absent on success.",
      "additionalProperties": {}
    },
    "shown": {
      "type": "number",
      "description": "Results on this page. Set with truncated."
    },
    "notice": {
      "type": "string",
      "description": "Present when zero results are returned: on a cursor_mark page past the last match, says the list is exhausted; otherwise echoes the query and suggests how to broaden it. Also present when limit was above the 100-result cap per call, and when abstracts for results shown with EuropePMC metadata only could not be retrieved, which leaves those results without one."
    },
    "preprints": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "doi",
          "enriched"
        ],
        "properties": {
          "doi": {
            "type": "string",
            "description": "Preprint DOI."
          },
          "date": {
            "type": "string",
            "description": "Posting or revision date."
          },
          "type": {
            "type": "string",
            "description": "Preprint type."
          },
          "title": {
            "type": "string",
            "description": "Preprint title."
          },
          "awards": {
            "type": "array",
            "items": {
              "type": "string",
              "description": "One award value as upstream records it."
            },
            "description": "Grant award numbers from the funding statement, verbatim and deduplicated — one value can hold several grants run together without a separator. Absent when none, and on EuropePMC-only fallback records. Funder names are not included: api.biorxiv.org attributes them to unrelated organizations."
          },
          "server": {
            "enum": [
              "biorxiv",
              "medrxiv"
            ],
            "type": "string",
            "description": "Server the preprint was found on — accepted as the server input of every tool. Present on enriched records only."
          },
          "authors": {
            "type": "string",
            "description": "Author list."
          },
          "license": {
            "type": "string",
            "description": "License identifier."
          },
          "version": {
            "type": "string",
            "description": "Latest revision version."
          },
          "abstract": {
            "type": "string",
            "description": "Abstract text. Omitted when include_abstract is false. On a EuropePMC-fallback record, absent when EuropePMC holds none or the abstract lookup failed — the notice says when it failed."
          },
          "category": {
            "type": "string",
            "description": "Subject category."
          },
          "enriched": {
            "type": "boolean",
            "description": "True when full bioRxiv metadata was available; false for EuropePMC-only fallback."
          },
          "jatsxmlUrl": {
            "type": "string",
            "description": "URL to the JATS XML full-text."
          },
          "revisionCount": {
            "type": "number",
            "description": "Total revision count when enriched from bioRxiv."
          },
          "enrichment_error": {
            "enum": [
              "service_error",
              "not_found",
              "rate_limited"
            ],
            "type": "string",
            "description": "Reason enrichment was unavailable: \"service_error\" (transient — retry may help), \"rate_limited\" (api.biorxiv.org returned HTTP 429 — wait before retrying, and expect the other preprint metadata tools to be limited too), or \"not_found\" (DOI not indexed on target server — EuropePMC fallback is authoritative). Only present when enriched is false."
          },
          "authorCorresponding": {
            "type": "string",
            "description": "Corresponding author."
          },
          "publishedJournalDoi": {
            "type": "string",
            "description": "Published journal DOI when accepted."
          },
          "authorCorrespondingInstitution": {
            "type": "string",
            "description": "Corresponding author institution."
          }
        },
        "description": "A single search result.",
        "additionalProperties": false
      },
      "description": "Search results, ranked by EuropePMC relevance."
    },
    "queryEcho": {
      "type": "object",
      "required": [
        "server",
        "limit"
      ],
      "properties": {
        "limit": {
          "type": "number",
          "description": "Maximum results requested from EuropePMC: the limit input, capped at 100 per call."
        },
        "query": {
          "type": "string",
          "description": "The keyword query sent to EuropePMC, if any."
        },
        "author": {
          "type": "string",
          "description": "The author filter applied as an AUTH: clause, if any."
        },
        "server": {
          "type": "string",
          "description": "Server scope used for enrichment."
        },
        "date_to": {
          "type": "string",
          "description": "date_to filter applied, if any."
        },
        "date_from": {
          "type": "string",
          "description": "date_from filter applied, if any."
        },
        "cursor_mark": {
          "type": "string",
          "description": "cursor_mark page token applied, if any."
        }
      },
      "description": "Echo of the parameters used to produce this result set — lets callers verify what was sent.",
      "additionalProperties": false
    },
    "truncated": {
      "type": "boolean",
      "description": "True when limit asked for more than the 100 results one call returns and this page holds all 100 — continue with nextCursorMark."
    },
    "totalCount": {
      "type": "number",
      "description": "Total preprints matching the query in EuropePMC (hitCount) — the true upstream grand total, not the number of results returned."
    },
    "nextCursorMark": {
      "type": "string",
      "description": "Opaque token for the next page of ranked results. Present only when more results exist beyond this page; pass it back as cursor_mark. Absent on the last page."
    },
    "partial_results": {
      "type": "boolean",
      "description": "True when one or more DOIs failed bioRxiv enrichment and fell back to EuropePMC metadata."
    }
  },
  "additionalProperties": false
}

{
  "readOnlyHint": true,
  "openWorldHint": true
}

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "doi"
  ],
  "properties": {
    "doi": {
      "type": "string",
      "description": "Preprint DOI (e.g. 10.1101/2024.05.28.596311 or 10.64898/2026.05.07.723463). A doi.org or biorxiv.org/medrxiv.org article URL, a doi: prefix, or a .full suffix is accepted and stripped; a trailing vN (…596311v2) requests that version. Without one, the latest version is resolved automatically."
    },
    "limit": {
      "type": "integer",
      "default": 20000,
      "maximum": 9007199254740991,
      "minimum": 1,
      "description": "Maximum number of characters to return in this chunk. Default 20,000; a value past the remaining text returns the rest of the article. Check the length field for the actual count returned."
    },
    "offset": {
      "type": "integer",
      "default": 0,
      "maximum": 9007199254740991,
      "minimum": 0,
      "description": "Character offset into the full extracted text at which to start reading. 0 returns the beginning. To read the next chunk, use offset = prior_offset + prior_length (the length field from the previous response)."
    },
    "server": {
      "enum": [
        "biorxiv",
        "medrxiv",
        "both"
      ],
      "type": "string",
      "default": "both",
      "description": "Server the preprint was posted on. \"both\" (default) checks bioRxiv and medRxiv in parallel to resolve the DOI — the full-text fetch itself only ever targets whichever server resolved, and the output server field names it."
    },
    "version": {
      "type": "integer",
      "maximum": 9007199254740991,
      "minimum": 1,
      "description": "Preprint version to read (1, 2, …) — the revision numbers biorxiv_get_preprint lists. Omit for the latest version. Must match a vN suffix on the DOI when both are given."
    }
  },
  "additionalProperties": false
}

{
  "type": "object",
  "anyOf": [
    {
      "not": {
        "required": [
          "error"
        ]
      },
      "required": [
        "doi",
        "server",
        "version",
        "content",
        "contentFormat",
        "wordCount",
        "sourceUrl",
        "offset",
        "length",
        "totalChars",
        "remainingChars",
        "hasMore"
      ]
    },
    {
      "required": [
        "error"
      ]
    }
  ],
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "cap": {
      "type": "number",
      "description": "The limit (max characters) applied to this chunk."
    },
    "doi": {
      "type": "string",
      "description": "The resolved preprint DOI, in bare form."
    },
    "error": {
      "type": "object",
      "required": [
        "code",
        "message"
      ],
      "properties": {
        "code": {
          "type": "integer",
          "maximum": 9007199254740991,
          "minimum": -9007199254740991,
          "description": "JSON-RPC error code for this failure."
        },
        "data": {
          "type": "object",
          "properties": {
            "reason": {
              "type": "string",
              "examples": [
                "invalid_doi_format",
                "version_conflict",
                "version_not_found",
                "doi_not_found",
                "upstream_unavailable",
                "rate_limited",
                "fulltext_unavailable",
                "offset_out_of_range"
              ],
              "description": "Machine-readable failure mode. Declared by this tool: `invalid_doi_format`: The input DOI does not match the 10.NNNN/ pattern, even after URL, doi:, and suffix stripping. `version_conflict`: The DOI carries a vN suffix and the version input names a different version. `version_not_found`: The preprint exists but has no revision with the requested version number. `doi_not_found`: The DOI resolves to an empty collection on every attempted server. `upstream_unavailable`: No attempted server resolved the DOI and at least one lookup failed against api.biorxiv.org; the version lookup used most of the call's time budget, so the article page was never requested or had not answered when the budget ran out; or the article page (www.biorxiv.org / www.medrxiv.org) did not answer within the call. `rate_limited`: Either origin returned HTTP 429 for this host — the article page (www.biorxiv.org / www.medrxiv.org) during the full-text fetch, or api.biorxiv.org during version resolution. `fulltext_unavailable`: The preprint exists but its full-text HTML page is blocked, missing, or yields no extractable text (PDF-only). `offset_out_of_range`: offset is greater than or equal to the total character length of the extracted text. Other values are possible when a failure originates below the handler."
            },
            "recovery": {
              "type": "object",
              "required": [
                "hint"
              ],
              "properties": {
                "hint": {
                  "type": "string"
                }
              },
              "description": "Actionable next step for the caller.",
              "additionalProperties": {}
            },
            "retryable": {
              "type": "boolean",
              "description": "Whether retrying may succeed."
            }
          },
          "additionalProperties": {}
        },
        "message": {
          "type": "string",
          "description": "Human-readable description of what went wrong."
        }
      },
      "description": "Present when the call failed. Absent on success.",
      "additionalProperties": {}
    },
    "shown": {
      "type": "number",
      "description": "Characters returned in this chunk."
    },
    "title": {
      "type": "string",
      "description": "Article title detected during extraction. Absent when the page exposed none."
    },
    "length": {
      "type": "number",
      "description": "Number of characters returned in this chunk."
    },
    "notice": {
      "type": "string",
      "description": "Paging guidance when the content was truncated — how to fetch the next chunk."
    },
    "offset": {
      "type": "number",
      "description": "Character offset into the full extracted text where this chunk begins."
    },
    "server": {
      "enum": [
        "biorxiv",
        "medrxiv"
      ],
      "type": "string",
      "description": "Server the preprint was resolved on."
    },
    "content": {
      "type": "string",
      "description": "The requested chunk of full text as best-effort Markdown extracted from the rendered HTML page. Section structure is approximate — this is not JATS."
    },
    "hasMore": {
      "type": "boolean",
      "description": "True when more text follows this chunk. When true, call again with offset = offset + length."
    },
    "version": {
      "type": "string",
      "description": "Preprint version whose full text was retrieved — the requested one, or the latest revision when none was requested. Pass it back as version when paging."
    },
    "sourceUrl": {
      "type": "string",
      "description": "The full-text HTML page the content was extracted from."
    },
    "truncated": {
      "type": "boolean",
      "description": "True when this chunk was capped by limit and more text remains."
    },
    "wordCount": {
      "type": "number",
      "description": "Approximate word count of the FULL extracted article, not just the returned chunk — whitespace-delimited tokens of the same Markdown text that totalChars measures, so Markdown markers such as # and - count too."
    },
    "totalChars": {
      "type": "number",
      "description": "Total characters in the full extracted text. Use with offset and length to page through long articles."
    },
    "contentFormat": {
      "type": "string",
      "const": "html-markdown",
      "description": "How content was produced: Markdown extracted from the rendered HTML article page (constant)."
    },
    "omittedTables": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "label",
          "url"
        ],
        "properties": {
          "url": {
            "type": "string",
            "description": "The article origin's page that serves this table's cells. Not fetched by this tool."
          },
          "label": {
            "type": "string",
            "description": "The table label as the article prints it, e.g. \"Table 1\"."
          }
        },
        "description": "One table whose cells content does not include.",
        "additionalProperties": false
      },
      "description": "Tables the article page names without their cells — content keeps each one's caption, and the cells live on a separate page at url. The same list on every chunk. Absent when the article has none."
    },
    "remainingChars": {
      "type": "number",
      "description": "Characters remaining after this chunk (totalChars - offset - length). 0 means this chunk reaches the end."
    }
  },
  "additionalProperties": false
}

{
  "readOnlyHint": true,
  "openWorldHint": true
}

skill://biorxiv-guide/SKILL.md

skill://{+path}