Koskamo

Slipstack MCP

An official MCP server provided by Slipstack that enables AI agents to generate pixel-perfect PDF invoices, receipts, and EN 16931 e-invoices (Factur-X, XRechnung, ZUGFeRD) from JSON data. It supports tools for creating documents, parsing e-invoices, and checking account usage, with a free demo quota available without authentication.

Endpoint and access

No sign-in to connect and list tools. Individual tools may still need a vendor account, credentials, or permissions; check the documented prerequisites.

Slipstack MCP logo, by SlipstackVendor evidenceStreamable HTTPNo sign-inEndpoint checked 2026-11-07Operated by Slipstack
You need:Authorization: Bearer for plan quotasfree tier requires only an API key from /pricing
MCP endpoint (Streamable HTTP)
https://slipstack.dev/api/mcp
Vendor documentation

What its tools do

7 tools, grouped by the hints the server advertises. Hints are self-declared, not verified behavior.

Read-only (3)

Can change data (4)

7 of 7 have a description · 7 of 7 declare behavior hints · 3 of 6 with parameters document them all

Checks and signals

Each line is separate evidence, not a trust score.

  • Passed Endpoint answered the live check ·
  • Passed Official MCP Registry namespace is tied to slipstack.dev ·
  • Passed Endpoint is on the registry namespace domain ·
  • Availability 1 of 1 checks passed in 30 days

What you can do with it

  • Generate invoice and receipt PDFs from JSON data
  • Create EN 16931 compliant e-invoices (Factur-X, XRechnung)
  • Parse CII or UBL e-invoice XML into normalized JSON
  • Check account usage and document quotas

Source and maintenance

Vendor evidenceRegistry 1.0.0
mcp-registry: dev.slipstack/pdf@1.0.0Project website

Protocol and capabilities

Server
slipstack 1.0.0
MCP protocol negotiated in check
2025-11-25
Tools
7 advertised
Resources
Not advertised
Resource templates
Not advertised
Prompts
Not advertised
Server-advertised capabilities
{
  "tools": {
    "listChanged": true
  }
}

Tools

7 advertised

create_invoice_pdf — Create invoice PDF
Advertised by the server during the last successful anonymous check.

Generate a professional invoice PDF from structured JSON (parties, line items, tax, discount). Returns a download URL valid for 24 hours plus computed totals. No account needed for up to 10 documents/day; pass api_key or an Authorization header for plan quotas.

create_invoice_pdf input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "data"
  ],
  "properties": {
    "data": {
      "type": "object",
      "required": [
        "from",
        "to",
        "number",
        "items"
      ],
      "properties": {
        "to": {
          "type": "object",
          "required": [
            "name"
          ],
          "properties": {
            "city": {
              "$ref": "#/properties/data/properties/from/properties/city"
            },
            "name": {
              "$ref": "#/properties/data/properties/from/properties/name"
            },
            "email": {
              "$ref": "#/properties/data/properties/from/properties/email"
            },
            "phone": {
              "$ref": "#/properties/data/properties/from/properties/phone"
            },
            "vatId": {
              "$ref": "#/properties/data/properties/from/properties/vatId"
            },
            "address": {
              "$ref": "#/properties/data/properties/from/properties/address"
            },
            "logoUrl": {
              "$ref": "#/properties/data/properties/from/properties/logoUrl"
            },
            "postalCode": {
              "$ref": "#/properties/data/properties/from/properties/postalCode"
            },
            "countryCode": {
              "$ref": "#/properties/data/properties/from/properties/countryCode"
            }
          },
          "description": "The party being billed",
          "additionalProperties": false
        },
        "date": {
          "type": "string",
          "description": "Issue date, e.g. 2026-06-09"
        },
        "from": {
          "type": "object",
          "required": [
            "name"
          ],
          "properties": {
            "city": {
              "type": "string",
              "description": "City name (improves e-invoice address quality)"
            },
            "name": {
              "type": "string",
              "minLength": 1,
              "description": "Legal or display name"
            },
            "email": {
              "type": "string"
            },
            "phone": {
              "type": "string"
            },
            "vatId": {
              "type": "string",
              "description": "VAT identifier, e.g. FR12345678901 (needed for e-invoices with VAT)"
            },
            "address": {
              "type": "string",
              "description": "Postal address, newlines allowed"
            },
            "logoUrl": {
              "type": "string",
              "description": "HTTPS URL of a logo image (issuer only)"
            },
            "postalCode": {
              "type": "string",
              "description": "Postal code"
            },
            "countryCode": {
              "type": "string",
              "maxLength": 2,
              "minLength": 2,
              "description": "ISO 3166-1 alpha-2 country code, e.g. FR (required for e-invoices)"
            }
          },
          "description": "The party issuing the document",
          "additionalProperties": false
        },
        "items": {
          "type": "array",
          "items": {
            "type": "object",
            "required": [
              "description",
              "quantity",
              "unitPrice"
            ],
            "properties": {
              "quantity": {
                "type": "number",
                "minimum": 0
              },
              "unitPrice": {
                "type": "number",
                "minimum": 0,
                "description": "Price per unit in the document currency"
              },
              "description": {
                "type": "string",
                "minLength": 1
              }
            },
            "additionalProperties": false
          },
          "minItems": 1
        },
        "notes": {
          "type": "string"
        },
        "terms": {
          "type": "string"
        },
        "number": {
          "type": "string",
          "minLength": 1,
          "description": "Document number, e.g. INV-2026-001"
        },
        "dueDate": {
          "type": "string",
          "description": "Payment due date (invoices)"
        },
        "taxRate": {
          "type": "number",
          "maximum": 100,
          "minimum": 0,
          "description": "Tax percent applied after discount"
        },
        "currency": {
          "type": "string",
          "description": "ISO 4217 code, default USD"
        },
        "discount": {
          "type": "number",
          "minimum": 0,
          "description": "Absolute discount amount"
        },
        "accentColor": {
          "type": "string",
          "description": "Hex color for the template accent, e.g. #0ea5e9"
        },
        "paymentIban": {
          "type": "string",
          "description": "Payment IBAN for SEPA credit transfer (e-invoices)"
        },
        "buyerReference": {
          "type": "string",
          "description": "Buyer reference, e.g. a German Leitweg-ID (e-invoice BT-10; required by XRechnung)"
        },
        "paymentReference": {
          "type": "string",
          "description": "Remittance/payment reference (e-invoice BT-83)"
        }
      },
      "additionalProperties": false
    },
    "api_key": {
      "type": "string",
      "description": "Optional Slipstack API key (psk_...). With a key, usage bills against your plan quota. Without one, the shared demo quota applies (10 documents/day per IP). Get a key at https://slipstack.dev/pricing"
    },
    "options": {
      "type": "object",
      "properties": {
        "format": {
          "enum": [
            "A4",
            "LETTER"
          ],
          "type": "string"
        }
      },
      "additionalProperties": false
    }
  },
  "additionalProperties": false
}
create_invoice_pdf annotations
{
  "readOnlyHint": false,
  "openWorldHint": false,
  "idempotentHint": false,
  "destructiveHint": false
}
create_receipt_pdf — Create receipt PDF
Advertised by the server during the last successful anonymous check.

Generate a payment receipt PDF from structured JSON. Same schema as invoices (use `number` for the receipt number). Returns a 24-hour download URL and computed totals.

create_receipt_pdf input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "data"
  ],
  "properties": {
    "data": {
      "type": "object",
      "required": [
        "from",
        "to",
        "number",
        "items"
      ],
      "properties": {
        "to": {
          "type": "object",
          "required": [
            "name"
          ],
          "properties": {
            "city": {
              "$ref": "#/properties/data/properties/from/properties/city"
            },
            "name": {
              "$ref": "#/properties/data/properties/from/properties/name"
            },
            "email": {
              "$ref": "#/properties/data/properties/from/properties/email"
            },
            "phone": {
              "$ref": "#/properties/data/properties/from/properties/phone"
            },
            "vatId": {
              "$ref": "#/properties/data/properties/from/properties/vatId"
            },
            "address": {
              "$ref": "#/properties/data/properties/from/properties/address"
            },
            "logoUrl": {
              "$ref": "#/properties/data/properties/from/properties/logoUrl"
            },
            "postalCode": {
              "$ref": "#/properties/data/properties/from/properties/postalCode"
            },
            "countryCode": {
              "$ref": "#/properties/data/properties/from/properties/countryCode"
            }
          },
          "description": "The party being billed",
          "additionalProperties": false
        },
        "date": {
          "type": "string",
          "description": "Issue date, e.g. 2026-06-09"
        },
        "from": {
          "type": "object",
          "required": [
            "name"
          ],
          "properties": {
            "city": {
              "type": "string",
              "description": "City name (improves e-invoice address quality)"
            },
            "name": {
              "type": "string",
              "minLength": 1,
              "description": "Legal or display name"
            },
            "email": {
              "type": "string"
            },
            "phone": {
              "type": "string"
            },
            "vatId": {
              "type": "string",
              "description": "VAT identifier, e.g. FR12345678901 (needed for e-invoices with VAT)"
            },
            "address": {
              "type": "string",
              "description": "Postal address, newlines allowed"
            },
            "logoUrl": {
              "type": "string",
              "description": "HTTPS URL of a logo image (issuer only)"
            },
            "postalCode": {
              "type": "string",
              "description": "Postal code"
            },
            "countryCode": {
              "type": "string",
              "maxLength": 2,
              "minLength": 2,
              "description": "ISO 3166-1 alpha-2 country code, e.g. FR (required for e-invoices)"
            }
          },
          "description": "The party issuing the document",
          "additionalProperties": false
        },
        "items": {
          "type": "array",
          "items": {
            "type": "object",
            "required": [
              "description",
              "quantity",
              "unitPrice"
            ],
            "properties": {
              "quantity": {
                "type": "number",
                "minimum": 0
              },
              "unitPrice": {
                "type": "number",
                "minimum": 0,
                "description": "Price per unit in the document currency"
              },
              "description": {
                "type": "string",
                "minLength": 1
              }
            },
            "additionalProperties": false
          },
          "minItems": 1
        },
        "notes": {
          "type": "string"
        },
        "terms": {
          "type": "string"
        },
        "number": {
          "type": "string",
          "minLength": 1,
          "description": "Document number, e.g. INV-2026-001"
        },
        "dueDate": {
          "type": "string",
          "description": "Payment due date (invoices)"
        },
        "taxRate": {
          "type": "number",
          "maximum": 100,
          "minimum": 0,
          "description": "Tax percent applied after discount"
        },
        "currency": {
          "type": "string",
          "description": "ISO 4217 code, default USD"
        },
        "discount": {
          "type": "number",
          "minimum": 0,
          "description": "Absolute discount amount"
        },
        "accentColor": {
          "type": "string",
          "description": "Hex color for the template accent, e.g. #0ea5e9"
        },
        "paymentIban": {
          "type": "string",
          "description": "Payment IBAN for SEPA credit transfer (e-invoices)"
        },
        "buyerReference": {
          "type": "string",
          "description": "Buyer reference, e.g. a German Leitweg-ID (e-invoice BT-10; required by XRechnung)"
        },
        "paymentReference": {
          "type": "string",
          "description": "Remittance/payment reference (e-invoice BT-83)"
        }
      },
      "additionalProperties": false
    },
    "api_key": {
      "type": "string",
      "description": "Optional Slipstack API key (psk_...). With a key, usage bills against your plan quota. Without one, the shared demo quota applies (10 documents/day per IP). Get a key at https://slipstack.dev/pricing"
    },
    "options": {
      "type": "object",
      "properties": {
        "format": {
          "enum": [
            "A4",
            "LETTER"
          ],
          "type": "string"
        }
      },
      "additionalProperties": false
    }
  },
  "additionalProperties": false
}
create_receipt_pdf annotations
{
  "readOnlyHint": false,
  "openWorldHint": false,
  "idempotentHint": false,
  "destructiveHint": false
}
create_einvoice_xml — Create EN 16931 e-invoice XML
Advertised by the server during the last successful anonymous check.

Generate an EN 16931 e-invoice as UN/CEFACT Cross-Industry Invoice (CII) XML — the format behind France's Factur-X and Germany's XRechnung mandates. Same JSON shape as create_invoice_pdf plus a few extra fields: from/to countryCode (required), from.vatId (required when taxRate > 0), optional paymentIban, paymentReference, buyerReference. Returns a 24-hour download URL for the XML plus computed totals. Validated against the official EN 16931 schematron in CI.

create_einvoice_xml input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "data"
  ],
  "properties": {
    "data": {
      "type": "object",
      "required": [
        "from",
        "to",
        "number",
        "items"
      ],
      "properties": {
        "to": {
          "type": "object",
          "required": [
            "name"
          ],
          "properties": {
            "city": {
              "$ref": "#/properties/data/properties/from/properties/city"
            },
            "name": {
              "$ref": "#/properties/data/properties/from/properties/name"
            },
            "email": {
              "$ref": "#/properties/data/properties/from/properties/email"
            },
            "phone": {
              "$ref": "#/properties/data/properties/from/properties/phone"
            },
            "vatId": {
              "$ref": "#/properties/data/properties/from/properties/vatId"
            },
            "address": {
              "$ref": "#/properties/data/properties/from/properties/address"
            },
            "logoUrl": {
              "$ref": "#/properties/data/properties/from/properties/logoUrl"
            },
            "postalCode": {
              "$ref": "#/properties/data/properties/from/properties/postalCode"
            },
            "countryCode": {
              "$ref": "#/properties/data/properties/from/properties/countryCode"
            }
          },
          "description": "The party being billed",
          "additionalProperties": false
        },
        "date": {
          "type": "string",
          "description": "Issue date, e.g. 2026-06-09"
        },
        "from": {
          "type": "object",
          "required": [
            "name"
          ],
          "properties": {
            "city": {
              "type": "string",
              "description": "City name (improves e-invoice address quality)"
            },
            "name": {
              "type": "string",
              "minLength": 1,
              "description": "Legal or display name"
            },
            "email": {
              "type": "string"
            },
            "phone": {
              "type": "string"
            },
            "vatId": {
              "type": "string",
              "description": "VAT identifier, e.g. FR12345678901 (needed for e-invoices with VAT)"
            },
            "address": {
              "type": "string",
              "description": "Postal address, newlines allowed"
            },
            "logoUrl": {
              "type": "string",
              "description": "HTTPS URL of a logo image (issuer only)"
            },
            "postalCode": {
              "type": "string",
              "description": "Postal code"
            },
            "countryCode": {
              "type": "string",
              "maxLength": 2,
              "minLength": 2,
              "description": "ISO 3166-1 alpha-2 country code, e.g. FR (required for e-invoices)"
            }
          },
          "description": "The party issuing the document",
          "additionalProperties": false
        },
        "items": {
          "type": "array",
          "items": {
            "type": "object",
            "required": [
              "description",
              "quantity",
              "unitPrice"
            ],
            "properties": {
              "quantity": {
                "type": "number",
                "minimum": 0
              },
              "unitPrice": {
                "type": "number",
                "minimum": 0,
                "description": "Price per unit in the document currency"
              },
              "description": {
                "type": "string",
                "minLength": 1
              }
            },
            "additionalProperties": false
          },
          "minItems": 1
        },
        "notes": {
          "type": "string"
        },
        "terms": {
          "type": "string"
        },
        "number": {
          "type": "string",
          "minLength": 1,
          "description": "Document number, e.g. INV-2026-001"
        },
        "dueDate": {
          "type": "string",
          "description": "Payment due date (invoices)"
        },
        "taxRate": {
          "type": "number",
          "maximum": 100,
          "minimum": 0,
          "description": "Tax percent applied after discount"
        },
        "currency": {
          "type": "string",
          "description": "ISO 4217 code, default USD"
        },
        "discount": {
          "type": "number",
          "minimum": 0,
          "description": "Absolute discount amount"
        },
        "accentColor": {
          "type": "string",
          "description": "Hex color for the template accent, e.g. #0ea5e9"
        },
        "paymentIban": {
          "type": "string",
          "description": "Payment IBAN for SEPA credit transfer (e-invoices)"
        },
        "buyerReference": {
          "type": "string",
          "description": "Buyer reference, e.g. a German Leitweg-ID (e-invoice BT-10; required by XRechnung)"
        },
        "paymentReference": {
          "type": "string",
          "description": "Remittance/payment reference (e-invoice BT-83)"
        }
      },
      "additionalProperties": false
    },
    "api_key": {
      "type": "string",
      "description": "Optional Slipstack API key (psk_...). With a key, usage bills against your plan quota. Without one, the shared demo quota applies (10 documents/day per IP). Get a key at https://slipstack.dev/pricing"
    },
    "options": {
      "type": "object",
      "properties": {
        "profile": {
          "enum": [
            "facturx-basic",
            "xrechnung"
          ],
          "type": "string",
          "description": "EN 16931 guideline: facturx-basic (default, France/Factur-X) or xrechnung (Germany, XRechnung 3.0)"
        }
      },
      "additionalProperties": false
    }
  },
  "additionalProperties": false
}
create_einvoice_xml annotations
{
  "readOnlyHint": false,
  "openWorldHint": false,
  "idempotentHint": false,
  "destructiveHint": false
}
parse_einvoice — Parse an e-invoice (CII or UBL)
Advertised by the server during the last successful anonymous check.
Advertised read-only

Parse EN 16931 e-invoice XML — UN/CEFACT CII (Factur-X, ZUGFeRD, XRechnung) or UBL Invoice/CreditNote (Peppol BIS) — into normalized invoice JSON: parties, line items, totals, VAT ids, payment details. Pass the XML document as a string.

parse_einvoice input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "xml"
  ],
  "properties": {
    "xml": {
      "type": "string",
      "minLength": 1,
      "description": "The complete e-invoice XML document (CII or UBL)"
    },
    "api_key": {
      "type": "string",
      "description": "Optional Slipstack API key (psk_...). With a key, usage bills against your plan quota. Without one, the shared demo quota applies (10 documents/day per IP). Get a key at https://slipstack.dev/pricing"
    }
  },
  "additionalProperties": false
}
parse_einvoice annotations
{
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
get_document_schema — Get document schema
Advertised by the server during the last successful anonymous check.
Advertised read-only

Returns the JSON shape accepted by create_invoice_pdf / create_receipt_pdf / create_einvoice_xml, a complete example payload, and current plan limits. Call this first if you are unsure how to structure a document.

get_document_schema input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {}
}
get_document_schema annotations
{
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
get_api_key — Get a free API key
Advertised by the server during the last successful anonymous check.

Issue a free Slipstack API key (50 documents/month) for an email address, returned directly in the response — no signup flow, no email verification step. Idempotent: the same email always gets the same key back. Use the key as api_key on other tools or as an Authorization: Bearer header. Paid plans (from $19/mo for 1000 documents): https://buy.stripe.com/eVqeVcaEa9xFdnudDeew80n

get_api_key input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "email"
  ],
  "properties": {
    "email": {
      "type": "string",
      "minLength": 3,
      "description": "Email address to associate with the key (used for account recovery and plan upgrades)"
    }
  },
  "additionalProperties": false
}
get_api_key annotations
{
  "readOnlyHint": false,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
get_account_usage — Get account usage
Advertised by the server during the last successful anonymous check.
Advertised read-only

Returns the current month's document usage, quota, and plan for a Slipstack API key. Requires api_key (or an Authorization: Bearer header).

get_account_usage input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "api_key": {
      "type": "string",
      "description": "Slipstack API key (psk_...). Optional if sent as a Bearer header."
    }
  },
  "additionalProperties": false
}
get_account_usage annotations
{
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}

Prompts

Not advertised

No prompt definitions available.

Resources

Not advertised

No resource definitions available.

90-day uptime

A lightweight connection check about every six hours, sampled on hosts with many listings. It shows the server answered, not that its tools work.

Too few checks for a percentage yet (2 of 2 answered).

  1. 2026-11-07: 1 of 1 checks answered
  2. 2026-11-09: 1 of 1 checks answered

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks
1 of 1 (100%)
Average latency
399 ms
95th percentile latency
399 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

  • · probe · passed · 399 ms · metadata changed · 7 tool(s)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.
Claude Code configuration
claude mcp add --transport http slipstack-mcp https://slipstack.dev/api/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).
Codex configuration
codex mcp add slipstack-mcp --url https://slipstack.dev/api/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable slipstack-mcp in your MCP settings.
Cursor configuration
{
  "mcpServers": {
    "slipstack-mcp": {
      "url": "https://slipstack.dev/api/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).
Cline configuration
{
  "mcpServers": {
    "slipstack-mcp": {
      "type": "streamableHttp",
      "url": "https://slipstack.dev/api/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start slipstack-mcp and inspect its tools.
VS Code configuration
{
  "servers": {
    "slipstack-mcp": {
      "type": "http",
      "url": "https://slipstack.dev/api/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.
Gemini CLI configuration
gemini mcp add --transport http slipstack-mcp https://slipstack.dev/api/mcp

Claude Desktop

Open Claude Settings > Connectors > Add custom connector, enter this server URL and enable it for the conversation. This is a manual remote-connector handoff, not a desktop JSON configuration.
Claude Desktop configuration
https://slipstack.dev/api/mcp

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.
Windsurf configuration
{
  "mcpServers": {
    "slipstack-mcp": {
      "serverUrl": "https://slipstack.dev/api/mcp"
    }
  }
}

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