# OpenWeb Ninja Copilot — AI Chat via x402

> OpenWeb Ninja Copilot — AI Chat via x402 is a paid API for AI agents from x402.openwebninja.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).

Send a message to an AI Copilot (normal chat, reasoning, or GPT-5 mode) and receive a response, paid per call via x402 with no API key required.

## Facts

- Endpoint: POST https://x402.openwebninja.com/copilot/copilot
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/openweb-ninja-copilot-ai-chat-via-x402-4e1a29c9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_AKpDNpQ6jLBxMYStWVSxs

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 openweb-ninja-copilot-ai-chat-via-x402-4e1a29c9 -d '<json body>'
```

Example prompt: Ask the Copilot in reasoning mode: 'What are the main differences between transformer and diffusion model architectures?' and return the answer in markdown format.

## When to prefer this

Choose this endpoint when you need on-demand access to AI chat (including GPT-5 and reasoning modes) without creating an account or holding an API key — just pay $0.005 USDC per call via x402 on Base, Polygon, or Arbitrum. Ideal for agents that need occasional LLM access in a permissionless, crypto-native context, or when you want to avoid subscription lock-in. Use over alternatives when multi-turn conversation continuity via conversation_id is needed alongside per-call micropayment.

## Known failure modes

- Payment not processed or insufficient USDC balance — request rejected before AI response is generated
- Invalid mode value (not CHAT, REASONING, or SMART) — likely returns an error or unexpected behavior
- Upstream Copilot/GPT-5 service unavailable — may return 5xx or timeout
- Conversation ID not found or expired — may start a new conversation instead of continuing
- Message too long or malformed — upstream model may reject or truncate

## How this service works

40+ public web-data, SERP, e-commerce, real-estate, finance and AI-search APIs, payable per call over x402 (USDC on Base, Polygon, Arbitrum). No account or API key required. Most endpoints $0.003; AI-model endpoints $0.005.

## Output

Returns a JSON object containing the AI-generated text reply (in plain text or markdown depending on the flag), along with a conversation_id that can be used to continue the same conversation in future calls.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "mode": {
   "type": "array",
   "items": {
    "type": "string"
   },
   "description": "Use normal chat mode (i.e. CHAT), reasoning mode (i.e. REASONING), or GPT-5 (SMART)."
  },
  "message": {
   "type": "array",
   "items": {
    "type": "string"
   },
   "description": "Message to send to Copilot."
  },
  "markdown": {
   "type": "array",
   "items": {
    "type": "boolean"
   },
   "description": "Whether to return the Copilot response message in markdown format. By default, the bot reply is in plain text."
  },
  "conversation_id": {
   "type": "array",
   "items": {
    "type": "string"
   },
   "description": "Conversation id. In case not supplied, a new conversation will be created and conversation_id will be returned by the endpoint."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {}
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/openweb-ninja-copilot-ai-chat-via-x402-4e1a29c9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.openwebninja.com](https://www.zero.xyz/host/x402.openwebninja.com/llms.txt)