63 Live Endpoints · Base · Solana · Polygon
Guard, attest, comply and audit every x402 payment — before the money moves. No API keys. No signup. USDC is the only gate.
What is x402 Trust Layer
x402 Trust Layer is the control plane between AI agents and the open x402 marketplace. Every call decides whether to pay, whom to trust, which rail to use, and what to do when something goes wrong.
Built for agent fleets that handle real money — finance teams that need audit trails, developers wiring OpenDexter, and sellers who want verified attestations before accepting payment.
Why x402 Trust Layer
Guard → Attestation → Compliance → Settlement Ops. Compose individually or bundle in one preflight.
No API keys, no subscriptions. USDC micropayments on Base and Solana through Dexter.
63 routes in OpenAPI, /.well-known/x402, and llms.txt — run npm run ci before deploy.
Base + Solana out of the box. Automatic facilitator failover when one rail degrades.
KYM merchant trust, AP2 mandates, Visa dispute codes, SOC2 ledgers — nobody else ships these.
Every response: confidence, checks_passed, security grade, buyer guidance — not raw booleans.
// x402 API
Standard HTTP + x402 protocol. Get 402, sign USDC, retry — receive trust signals, compliance records, and settlement proof.
How it works
Hit any endpoint — no signup, no API key. Standard HTTP POST or GET.
POST /api/guard/pre-x402
Receive HTTP 402 + payment challenge. Sign USDC micropayment via Dexter facilitator.
402 → sign → X-Payment header
Retry with proof. Get structured trust output — grade, confidence, next steps.
200 · allowed: true · grade: A
Dual payment rail
/api/mpp/session/app/data/.well-known/x402 discoveryNo signup. No API key. Just pay per call with USDC.
Base · Solana — pick your rail.