micro--go-micro
Asim Aslam
b60952cbfe
The x402 wrapper could advertise a 402 and verify a payment, but never
settled it (the "exact" scheme needs verify + settle to actually move
funds), and its HTTPFacilitator sent no auth, so it could not use the
Coinbase CDP facilitator — the only one that settles Base mainnet. It
also passed the raw base64 X-PAYMENT string where facilitators expect the
decoded payload object.
- Add an optional Settler interface; HTTPFacilitator now implements
Verify and Settle (POST /verify then /settle), and Require settles a
verified payment and emits the settlement reference.
- HTTPFacilitator.Authorize hook + x402.CDP(keyID, secret) constructor:
mint a short-lived Ed25519 Bearer JWT (stdlib crypto only, no chain
code, no new dependency) so verify/settle authenticate to CDP.
- Decode the X-PAYMENT payload to the object facilitators expect, with
passthrough for non-JSON payloads.
- Requirements gains extra (EIP-712 domain) and mimeType; the asset and
its {name,version} are auto-filled for known networks so clients can
sign. NormalizeNetwork maps base/base-sepolia to CAIP-2 ids.
- Accept the v2 PAYMENT-SIGNATURE request header and emit both
X-PAYMENT-RESPONSE and PAYMENT-RESPONSE.
Backward compatible: the default network stays "base", the Facilitator
interface is unchanged (Settler is additive), and gateway/mcp builds and
tests unchanged. Adds tests for settle, CDP JWT, header aliases, extra,
and payload decoding.