---
title: "Paid: Verify counterparty agent ownership claim"
method: GET
path: "/api/x402/onchain-identity-verify"
---

# Paid: Verify counterparty agent ownership claim

`GET /api/x402/onchain-identity-verify`

## Request

- Base URL: `https://three.ws`
- URL: `https://three.ws/api/x402/onchain-identity-verify`
- Auth: none required

Pay $0.005 USDC to verify whether a three.ws agent_id actually owns/deployed a given contract or mint on a given CAIP-2 chain, using the canonical meta.onchain unified index.

## Query parameters

- `agent_id` string, uuid, required
- `chain` string, required
- `contract_or_mint` string, required

## Response `200`

Verification result JSON

## Other responses

- `400`: Missing or invalid parameters
- `402`: Payment Required (x402)

---

[API](https://skmtc.dev/three/apis/three-ws-api.md) · [All operations](https://skmtc.dev/three/apis/three-ws-api/llms.txt) · [OpenAPI document](https://skmtc.dev/three/apis/three-ws-api/revisions/dbc5e3a81b79?raw)