io.github.physics-star-cat/databutler-facts

up checked 2026-11-11T07:40:14.036Z

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Publisher-provided description

Official thresholds, rates and fees by key, with source, verified date and signature.

Summary by lookupd

Looks up verified official figures like tax thresholds, rates, fees and deadlines, with source and verification date for each value.

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http databutler-facts https://databutler.dev/api/mcp/facts

Codex, remote (streamable-http)

codex mcp add databutler-facts --url https://databutler.dev/api/mcp/facts

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

{
  "mcpServers": {
    "databutler-facts": {
      "url": "https://databutler.dev/api/mcp/facts"
    }
  }
}

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

Tools (3 tools)

Publisher-provided text

• get_fact The current value of one official figure by key — a tax threshold, rate, allowance, fee, deadline, limit or policy rate — with the date it was verified, the off
• resolve_fact Ranked canonical fact keys for a plain-language question or a guessed key — "NI primary threshold", "ECB deposit rate", "passport renewal fee" — each with label
• what_changed_since What has changed in Data Butler's verified datasets since a date — pass your training-cutoff date to learn which UK tax/NI/benefit thresholds, exam-spec facts,

Details

• Version: 1.0.0
• Transports: streamable-http
• Uptime (7 days): 100%
• Median latency: 240 ms
• First indexed: 2026-11-01T09:44:46.000Z
• Last seen in registry: 2026-11-01T09:44:46.000Z
• Repository: https://github.com/physics-star-cat/databutler
• Website: https://databutler.dev/api

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