# Magnum.ai ChatGPT-42 API Endpoint

> Magnum.ai ChatGPT-42 API Endpoint is a paid API for AI agents from magnum-ai-flame.vercel.app, paid per call via x402, $0.09/call, status unknown (last checked 2026-10-22).

A pay-per-call API endpoint on the Magnum.ai marketplace that returns a generic API response, likely proxying a ChatGPT or AI-powered capability, billed at $0.09 USDC per call via x402 on Base chain.

## Facts

- Endpoint: POST https://magnum-ai-flame.vercel.app/api/chatgpt-42?utm_source=zero.xyz
- Price: $0.09/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/magnum-ai-chatgpt-42-api-endpoint-28eb4997
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JfuNLnt3r4qXLQ0D4BPAi

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 magnum-ai-chatgpt-42-api-endpoint-28eb4997 -d '<json body>'
```

Example prompt: Call the Magnum.ai ChatGPT-42 endpoint on Base and give me a response — it's $0.09 USDC per call via x402.

## When to prefer this

Choose this endpoint when you need to invoke a ChatGPT-style AI capability through the Magnum.ai marketplace using x402 micropayments on Base chain, and you specifically want per-call billing at $0.09 USDC without a subscription. Best suited for agents with on-chain payment capability targeting Base.

## Known failure modes

- Insufficient USDC balance for x402 payment — 402 Payment Required error
- Invalid or malformed request body — schema validation error
- Endpoint unavailable or Vercel deployment down — 503 Service Unavailable
- Payment transaction failure on Base chain — payment not confirmed
- Unknown or undefined behavior from underlying ChatGPT proxy — opaque error response

## How this service works

Pay-per-call API marketplace with 150 endpoints powered by x402 payments on Base chain.

## Output

Returns a result object containing API response data from the ChatGPT-42 endpoint; the exact shape of the inner data is an example response object.

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "example": {
  "result": {
   "data": "example response"
  }
 },
 "properties": {
  "result": {
   "type": "object",
   "description": "API response data"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/magnum-ai-chatgpt-42-api-endpoint-28eb4997/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from magnum-ai-flame.vercel.app](https://www.zero.xyz/host/magnum-ai-flame.vercel.app/llms.txt)