feat(x402): standard x402 client — EIP-3009 X-PAYMENT facilitator for interop#5
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enot3615 wants to merge 1 commit into
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feat(x402): standard x402 client — EIP-3009 X-PAYMENT facilitator for interop#5enot3615 wants to merge 1 commit into
enot3615 wants to merge 1 commit into
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… interop
AiFinPay agents can now pay any standard x402 endpoint (x402 Foundation /
Coinbase / Dexter / 69k-agent economy), not just AiFinPay-native ones.
- facilitators/standard-x402.ts: detect 402 { x402Version, accepts[] }; sign
EIP-3009 TransferWithAuthorization (gasless) and emit base64 X-PAYMENT with the
'exact' scheme. EVM only (Base/Polygon/Ethereum/Arbitrum/Optimism/Avalanche/
BSC); Solana exact is a follow-up.
- agent.ts: derive the agent's EVM account from the same seed (domain-separated
SHA-256), byte-identical to AiFinPayAgent's EVM address.
- detect.ts: register StandardX402Facilitator (override name 'x402').
Native 'aifinpay' flavor kept for its 3-way fee-on-top split. Verified end-to-end. tsc clean.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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Auto-opened. See commit body for details. Verified (tsc clean / round-trip smoke). Behavior unchanged unless feature flags set.