---
title: "Changes to Run a live x402 endpoint readiness check before payment"
method: POST
path: "/api/agent/pay/v2"
---

# Changes to Run a live x402 endpoint readiness check before payment

`POST /api/agent/pay/v2`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 1 of 3 revisions.

- **2026-07-31** `d5ba2c6ebe80` — 1 breaking, 5 info

## Changes

- **2026-07-31** `d5ba2c6ebe80` — 1 breaking, 5 info
  - the request property `endpoint` became required
  - api tag `live-endpoint-probe` added
  - api tag `x402-endpoint-readiness` added
  - api tag `x402-validator` added
  - the request property `query` became optional
  - the `agent_policy` request property default value `strict` was added

---

[Operation](https://skmtc.dev/ontarioprotocol/apis/ontario-protocol-x402-api/docs/api/agent/pay/v2/post.md) · [API](https://skmtc.dev/ontarioprotocol/apis/ontario-protocol-x402-api.md) · [Page](https://skmtc.dev/ontarioprotocol/apis/ontario-protocol-x402-api/changes/api/agent/pay/v2/post)