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Public Data Catalog

by yhay81 · remote · no sign-in to list tools · v0.4.0 · published by GitHub user yhay81

Reviewed public-data search and execution with provenance and verifiable integrity receipts.

Changes · 2
CompareRegistry entry

3 tools: 2 change things and 1 only read.

Scanned Oct 21, 2026

1 check matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http public-data-catalog https://public-data-catalog-mcp.yusuke8h.workers.dev/mcp

Findings

Matches of fixed checks, with the text they matched.

1 warn
  • Warnexecute

    The server marks "execute" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

    Matched text

    annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":false,"openWorldHint":true}; The name "execute" says "execute": a word for a change.

    What this check looks for

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

3 tools

Changes things 2Claude Code: ask
  • executeRun one allowlisted, bounded HTTPS GET contract and return extracted values, provenance, and an integrity receipt.1 finding

    Why it is in this group

    • The name "execute" says "execute": a word for a change.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    Findings

    • Warn

      The server marks "execute" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

      Matched text

      annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":false,"openWorldHint":true}; The name "execute" says "execute": a word for a change.

      What this check looks for
    Description, as the server wrote it
    Run one allowlisted, bounded HTTPS GET contract and return extracted values, provenance, and an integrity receipt.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: false
    • openWorldHint: true
  • verifyCheck receipt and result hashes plus the execution envelope against the reviewed catalog.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Check receipt and result hashes plus the execution envelope against the reviewed catalog. This detects later modification; it does not prove publisher authenticity or current freshness.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
Only reads 1Claude Code: allow
  • search_dataSearch current metadata from e-Gov Data Portal and Statistics Dashboard, then return a short ranked list with publisher, formats, coverage, usage terms, and official links.No findings

    Why it is in this group

    • The name "search_data" says "search": a word for reading.
    Description, as the server wrote it
    Search current metadata from e-Gov Data Portal and Statistics Dashboard, then return a short ranked list with publisher, formats, coverage, usage terms, and official links.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 0.4.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http public-data-catalog https://public-data-catalog-mcp.yusuke8h.workers.dev/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__public-data-catalog__search_data"
    ],
    "ask": [
      "mcp__public-data-catalog__execute",
      "mcp__public-data-catalog__verify"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as public-data-catalog. Review it before you use it.