Federal Register

Reliability

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How to connect

Add it to any MCP client that supports remote servers.

{
  "mcpServers": {
    "federal-register-3": {
      "type": "http",
      "url": "https://federal-register.1102tools.com/mcp"
    }
  }
}

8 tools

• search_documents

  Search Federal Register documents. Finds proposed rules, final rules, notices, and presidential documents published in the Federal Register since 1994. Key parameters: - agencies: list of agency URL slugs (OR logic). Use list_agencies() to find slugs…

• get_document

  Get full details for a single Federal Register document by number. Returns all available fields including full text URLs, docket info, RIN details, page views, topics, corrections, and CFR references. Document numbers look like '2026-03065' (modern), 'E9-12940' or…

• get_documents_batch

  Fetch multiple documents in one call (up to ~20). Pass a list of document numbers to fetch up to about 20 in one call. Always returns {count, results, [errors]}; errors.not_found lists any requested numbers the API could not locate. Results come back in the…

• get_facet_counts

  Get document counts grouped by type, agency, topic, or time period. Accepts the same filter conditions as search_documents. Returns aggregated counts without individual document results. Facets: type, agency, topic (categorical) plus daily, weekly, monthly…

• get_public_inspection

  Get current public inspection documents (pre-publication). Public inspection documents are FR documents filed for publication but not yet published. Updated business days only. The current-PI endpoint does NOT support server-side filtering. This tool fetches…

• list_agencies

  List agencies with their IDs, names, slugs, and parent agencies. Use the 'slug' values with search_documents() and other tools. Common procurement slugs: - defense-department (DoD) - general-services-administration (GSA)…

• open_comment_periods

  Find source-reported open comment periods, soonest indexed deadline first. Covers proposed rules, notices, AND final/interim rules that accept comments (dozens of RULE-type documents have open periods at any time). Queries for comment close date >= today, scans up…

• far_case_history

  Get all Federal Register documents for a FAR/DFARS case or FAC. Pass a docket ID like 'FAR Case 2023-008' (or a FAC number like 'FAC 2025-06'). Runs BOTH a docket-id search and a quoted full-text search, then merges the two result sets (deduped by document number)…

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