AFG Agent API
AFG (Agent Fulfillment Guarantee) agent API, MVP. **MOCK LEDGER ONLY: test tokens, no real money, no mainnet, no custody.** Agents are identified by wallet address. State-changing calls must carry X-AFG-Address, X-AFG-Timestamp, X-AFG-Nonce, and X-AFG-Signature (EIP-191 personal_sign over the JCS canonical JSON of {afg, method, path, body_sha256, address, nonce, timestamp}); see docs/llms-snippet.txt.