# claw402 OpenAI Models List via x402 Payment Gateway

> claw402 OpenAI Models List via x402 Payment Gateway is a paid API for AI agents from claw402.ai, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).

Returns the list of available OpenAI models via a pay-per-call x402 USDC payment gateway, requiring no API key or registration.

## Facts

- Endpoint: GET https://claw402.ai/api/v1/ai/openai/models
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/claw402-openai-models-list-via-x402-payment-gateway-d4fd0dbc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_gJ77uSgLt4uEcZNPe0wyv

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability claw402-openai-models-list-via-x402-payment-gateway-d4fd0dbc
```

Example prompt: What OpenAI models are currently available? Use the claw402 x402 gateway so I don't need an API key — just pay with my USDC wallet.

## When to prefer this

Use this endpoint when you need to list available OpenAI models but want to avoid API key registration or account creation, and are comfortable paying micro-transactions in USDC via the x402 protocol. Useful for anonymous, wallet-based API access in crypto-native agent workflows.

## Known failure modes

- Payment not received or insufficient USDC balance — returns HTTP 402 with payment requirements
- Invalid or missing x402 payment header — authentication/payment error
- Upstream OpenAI API unavailable — gateway may return an error or empty data array
- Malformed request — may return non-zero code with empty data

## How this service works

Backed by vergex.trade. Pay for any API with USDC. No API keys. No registration. Just a wallet.

## Output

A JSON object with a code field (0 on success) and a data array containing the list of available OpenAI models, similar to the OpenAI /models endpoint response.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "code": 0,
  "data": []
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/claw402-openai-models-list-via-x402-payment-gateway-d4fd0dbc/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from claw402.ai](https://www.zero.xyz/host/claw402.ai/llms.txt)