API Gateway

• FastAPI (Python 3.11+)

• Responsibilities:

  • JWT + API key auth

  • x402-style payment verification

  • proxy + routing

  • revenue split

  • rate limiting, abuse protection

  • webhooks/events

Base URL: https://facilitator.qwery.xyz

Core Endpoints (12 total):

Information:

GET / Service info

GET /health Health check

GET /supported Supported tokens/networks

GET /discovery Discovery information

Payment Processing:

POST /create-payment Create payment request

POST /settle Submit signed transaction

POST /verify Verify payment status

GET /wallet-status Check facilitator wallet

Token Gateway (Access Control):

POST /token-gate/check-access Check if wallet owns token

GET /token-gate/get-tier Get membership tier

GET /token-gate/accepted-tokens List accepted tokens

GET /token-gate/tiers List all tiers

Rate Limits:

• No authentication required (facilitator is public)

• Reasonable rate limits apply

• DOS protection active