Federal Register Rules, Regulations & Proposed Rules API
Search official Federal Register documents for final rules, proposed rules, notices, agency actions, comment deadlines, dockets, RINs, and CFR references. Deterministic test: query=artificial intelligence&maxResults=1. Records can be corrected, republished, withdrawn, delayed, or superseded and are publication evidence—not legal advice, current codified-law or applicability proof, or proof a reported comment deadline remains open. MCP tool: search_federal_register_documents.
x402 verified · Verified on /x402/v1/federal-register-documents · $0.01 · $0.01 USDC/request · 2 endpoints / 1 tools · Data · base network · x402 protocol
Discovery is free. Agents search the catalogue here. Payment happens on the listing 402, not on PayAPI.
url https://payapi.market/mcpHow to call this API
Every protected route returns HTTP 402 with x402 payment requirements. An agent pays the stated USDC amount on Base and retries with the payment header. No API keys, no accounts. Browse the marketplace or list your own API.
By AutoScrape