io.github.factreason/factreason

up checked 2026-11-11T01:38:33.125Z

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Publisher-provided title

FactReason

Publisher-provided description

Check exact npm/PyPI upgrades for evidence-backed breaking changes; query APIs and components.

Summary by lookupd

Checks npm and PyPI package upgrades for breaking changes, and queries third-party API schemas, auth details, and electronics component…

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http factreason https://www.factreason.com/mcp

Codex, remote (streamable-http)

codex mcp add factreason --url https://www.factreason.com/mcp

Cursor, remote (streamable-http) → .cursor/mcp.json

{
  "mcpServers": {
    "factreason": {
      "url": "https://www.factreason.com/mcp"
    }
  }
}

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Tools (11 tools)

Publisher-provided text

• factreason_package_upgrade_advisory Compare two exact published npm or PyPI versions and return publisher-declared registry metadata changes, including yanks, exports, module format, runtime floor
• factreason_api_breaking_changes Compare two versions of a third-party API and return breaking changes, including removed endpoints, parameter type changes, removed request body fields, and mig
• factreason_api_schema Search exact request and response schemas for third-party API endpoints. Pass service alone to list its indexed endpoints, add query to narrow by path or operat
• factreason_integration_brief Compile one callable third-party API brief: base URL, auth scheme, required parameters and types, request body, and documented response codes. Service is requir
• factreason_discover_api Find third-party APIs for a capability when the provider is unknown. Supply a concise capability such as "sms" or "manage DNS"; returns ranked services, example
• factreason_create_key Get a FactReason API key for yourself, instantly, with no human, no signup and no card. Returns a key carrying one-off trial credit that you can spend immediate
• factreason_create_topup_link Create a Stripe Checkout URL for adding prepaid credit to the calling Bearer API key. This creates an external checkout session but does not charge a card. You
• factreason_component_spec Look up electronics component pin assignments, voltage range, package, and alternatives. Pass exact partNumber for one component or query for a capability searc
• factreason_deprecation_scan Scan publisher specifications for deprecated endpoints or parameters, sunset dates, and replacement operations. Omit filters for the catalogue-wide view, pass s
• factreason_auth_playbook Get publisher-declared authentication schemes, scopes, rate-limit headers, and error codes for one third-party API. Returns a structured playbook or nearest ser
• factreason_subscribe_spec_changes Create a persistent specification watch for one service; a Bearer API key is required and each key may hold up to 50 watches. Without webhookUrl, read future ev

Details

• Version: 2.2.0
• Transports: streamable-http
• Uptime (7 days): 100%
• Median latency: 240 ms
• First indexed: 2026-11-01T09:29:26.917Z
• Last seen in registry: 2026-11-01T09:29:27.085Z
• Repository: https://github.com/factreason/factreason
• Website: https://factreason.com

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• Last crawl: 2026-11-11T16:17:25.167Z
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