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Spf

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Agent Extraction API x402 REST

Base or Ethereum contract address -> ABI and function list: Sourcify verification (exact/partial match), contract name, compiler, ABI, function selectors + signatures, event topics; proxies (EIP-1967, ZeppelinOS, others...

freetier-agent-api.pages.dev Crypto & Payments checked 2026-10-29

0.002 USDC per call per call

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