Koskamo

classifier.dev MCP

The classifier.dev MCP server provides tools for zero-shot text classification, URL scraping, and documentation management. It allows agents to classify texts, dimensions, and multi-labels, as well as list, read, and search documentation. The server supports both free anonymous use and funded workspace keys for higher limits and scraping capabilities.

Visit classifier.dev

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.

classifier.dev MCP logo, by classifier.devVendor evidenceStreamable HTTPNo sign-inEndpoint checked 2026-11-07Operated by classifier.dev
You need:There is no API key or account required for free useUse a funded workspace key from https://classifier.dev/app/keysThe workspace must have paid credits or an active paid plan
MCP endpoint (Streamable HTTP)
https://classifier.dev/mcp/docs
Vendor documentation

What its tools do

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

Read-only (4)

4 of 4 have a description · 4 of 4 declare behavior hints · 3 of 4 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 classifier.dev ·
  • Passed Endpoint is on the registry namespace domain ·
  • Availability 1 of 1 checks passed in 30 days

What you can do with it

  • Classify text inputs into predefined labels
  • Scrape and classify content from public URLs
  • Search and read documentation articles
  • Review uncertain classification results

Source and maintenance

Vendor evidenceRegistry 1.0.0
mcp-registry: dev.classifier/docs@1.0.0Source repositoryProject website
Maintenance checked

Protocol and capabilities

Server
classifier.dev docs 1.0.0
MCP protocol negotiated in check
2025-11-25
Tools
4 advertised
Resources
Not advertised
Resource templates
Not advertised
Prompts
Not advertised
Server-advertised capabilities
{
  "tools": {
    "listChanged": false
  }
}

Server-provided instructions

Untrusted server output shown for inspection. It is not Koskamo guidance and is excluded from knowledge search.

This server answers questions about classifier.dev, the keyless text-classification API; it does not classify anything itself — for that connect https://classifier.dev/mcp. Start with search_docs for a specific question, list_docs to see what exists, and read_doc (optionally with a section) for the full text.

Tools

4 advertised

list_docs — List the classifier.dev documents
Advertised by the server during the last successful anonymous check.
Advertised read-only

List every classifier.dev document available over this server — the API reference, the benchmark, the agent skill, the CLI, pricing, privacy, terms and the MCP setup guide — with an id, a title, its section headings and its size. Call this first, then read_doc for the one you need.

list_docs input schema
{
  "type": "object",
  "properties": {
    "filter": {
      "type": "string",
      "maxLength": 100,
      "description": "Optional: only documents whose id, title or section headings contain this text (case-insensitive)."
    }
  },
  "additionalProperties": false
}
list_docs output schema
{
  "type": "object",
  "required": [
    "docs"
  ],
  "properties": {
    "docs": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "id",
          "title",
          "url"
        ],
        "properties": {
          "id": {
            "type": "string"
          },
          "url": {
            "type": "string"
          },
          "chars": {
            "type": "integer"
          },
          "title": {
            "type": "string"
          },
          "sections": {
            "type": "array",
            "items": {
              "type": "string"
            }
          }
        }
      }
    }
  }
}
list_docs annotations
{
  "title": "List the classifier.dev documents",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
read_doc — Read a classifier.dev document
Advertised by the server during the last successful anonymous check.
Advertised read-only

Return one document in full, or just one of its sections. ids: api, developers, mcp-setup, benchmark, skill, llms, pricing, auth, agents, privacy, terms, about, contact. Use section to fetch a single heading (case-insensitive prefix match) when the whole document is more than you need.

read_doc input schema
{
  "type": "object",
  "required": [
    "id"
  ],
  "properties": {
    "id": {
      "enum": [
        "api",
        "developers",
        "mcp-setup",
        "benchmark",
        "skill",
        "llms",
        "pricing",
        "auth",
        "agents",
        "privacy",
        "terms",
        "about",
        "contact"
      ],
      "type": "string",
      "description": "Which document."
    },
    "section": {
      "type": "string",
      "description": "Optional heading to return on its own, e.g. \"limits\" or \"parameters\"."
    }
  },
  "additionalProperties": false
}
read_doc annotations
{
  "title": "Read a classifier.dev document",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
search_docs — Search the classifier.dev documentation
Advertised by the server during the last successful anonymous check.
Advertised read-only

Full-text search across every classifier.dev document. Returns the paragraphs that contain all of your query's words, with the document and section each came from. Use it for a specific question — rate limits, how confidence is calibrated, how to connect from Claude or ChatGPT — instead of reading whole documents.

search_docs input schema
{
  "type": "object",
  "required": [
    "query"
  ],
  "properties": {
    "limit": {
      "type": "integer",
      "default": 10,
      "maximum": 50,
      "minimum": 1
    },
    "query": {
      "type": "string",
      "maxLength": 200,
      "minLength": 2,
      "description": "Words to look for; all must appear in a paragraph."
    }
  },
  "additionalProperties": false
}
search_docs annotations
{
  "title": "Search the classifier.dev documentation",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
get_examples — Get a ready-to-run example for a client
Advertised by the server during the last successful anonymous check.
Advertised read-only

Return a copy-pasteable example of calling classifier.dev from a given client: curl, javascript (fetch), python (requests), the classify CLI, or an MCP tools/call payload. Use this when you are about to write integration code and want the exact request shape rather than reading the whole reference.

get_examples input schema
{
  "type": "object",
  "required": [
    "client"
  ],
  "properties": {
    "client": {
      "enum": [
        "curl",
        "javascript",
        "python",
        "cli",
        "mcp"
      ],
      "type": "string",
      "description": "Which client to show."
    },
    "multi_label": {
      "type": "boolean",
      "default": false,
      "description": "Show the multi-label form (every label that applies) instead of single-label."
    }
  },
  "additionalProperties": false
}
get_examples output schema
{
  "type": "object",
  "required": [
    "client",
    "code"
  ],
  "properties": {
    "code": {
      "type": "string"
    },
    "notes": {
      "type": "string"
    },
    "client": {
      "type": "string"
    }
  }
}
get_examples annotations
{
  "title": "Get a ready-to-run example for a client",
  "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 (1 of 1 answered).

  1. 2026-11-07: 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
891 ms
95th percentile latency
891 ms

Maintenance history

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

  • · probe · passed · 891 ms · metadata changed · 4 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 classifier-mcp https://classifier.dev/mcp/docs

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 classifier-mcp --url https://classifier.dev/mcp/docs

Cursor

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

Cline

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

VS Code

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

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 classifier-mcp https://classifier.dev/mcp/docs

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://classifier.dev/mcp/docs

Windsurf

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

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