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Renvoy gives you a hosted facilitator endpoint so you can add pay-per-request USDC payments to any API — no infrastructure to run, no keys to manage, no gas to fund. Set a price on your endpoint. We handle the on-chain settlement.

What is x402?

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Getting Started

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Server Integration

Add payments to my API

Client Integration

Pay for an x402 API

Agent Self-Provisioning

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API Reference

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How it works

Client                     Your Server                  Renvoy
  |                            |                            |
  |-- GET /data -------------->|                            |
  |<-- 402 + payment details --|                            |
  |                            |                            |
  |-- GET /data + X-PAYMENT -->|                            |
  |                            |-- POST /settle ----------->|
  |                            |<-- { success, tx } --------|
  |<-- 200 + data -------------|                            |
1

Client requests a protected endpoint

2

Server responds 402 Payment Required with price and payment address

3

Client signs a USDC transfer and retries with the X-PAYMENT header

4

Server forwards the payment to Renvoy, which settles it on-chain

5

Server returns the data

The @x402/express middleware and @x402/fetch client handle steps 2-4 automatically.
New here? Start with Getting Started — you’ll have a working payment flow in under 2 minutes.