International Classifications MCP

Deterministic MCP for statistical classifications and survey codelists with provenance.

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What it can do

    What data it sees

    Do you need an account

    No: the server works without sign-in

    Deterministic MCP for statistical classifications and survey codelists with provenance.

    How to connect

    How to connect International Classifications MCP to Claude

    The server address to paste into Claude settings:

    https://classifications.impactengines.ai/mcp

    1. Open Claude (claude.ai or the desktop app).
    2. Go to Settings → Connectors.
    3. Click Add custom connector.
    4. Paste the server address copied below into Remote MCP server URL and click Add.
    5. In a chat, click + → Connectors and switch the new connector on.

    Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

    Authorization

    After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

    How to connect International Classifications MCP to ChatGPT

    The server address to paste into ChatGPT settings:

    https://classifications.impactengines.ai/mcp

    1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
    2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
    3. Open Settings → Connectors and click Create.
    4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
    5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
    6. In a new chat open + → Apps/Connectors and enable the connector.

    OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

    Authorization

    On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

    How to connect International Classifications MCP to Cursor

    The server address to paste into Cursor settings:

    https://classifications.impactengines.ai/mcp

    Fastest: click Open in Cursor below and confirm the prompt.

    Manually:

    1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
    2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
    3. Save the file. The server appears in the MCP list; authorize it there if asked.

    Authorization

    If the service needs sign-in, an authorize button appears next to the server in the MCP list.

    Server tool list (10)

    Raw names from tools/list. Only developers need these.

    list_classificationsList classification families, versions, custodians, coverage and licensing notes. Start here when the correct standard is unknown.
    get_classificationGet authoritative metadata and coverage for one classification_id returned by list_classifications.
    list_codelistsList independent option lists within a classification before searching or exporting one list.
    recommend_classificationsReturn a deterministic ranked shortlist of all relevant classification concepts and codelists. Ranking supports user choice; it is not an automatic selection. Include answer options and context.
    search_codesFull-text search labels and notes. Results restrict to one option list only when codelist_id is explicitly supplied.
    get_code_definitionRetrieve one exact code or codelist container, including its node_kind, hierarchy position and explanatory notes.
    browse_hierarchyBrowse top-level nodes or immediate children. Curated families return node_kind=codelist containers at root; pass that code as parent_code to browse its options.
    validate_codesValidate exact codes against one named classification version.
    map_codesApply official stored correspondences and expose splits, merges, changed meanings and unmapped codes. Never assume one-to-one equivalence.
    export_choice_listReturn a structured choice list at a selected hierarchy level. MICS exports require one codelist_id and never merge unrelated answer lists.