# OnchainExpat x402 Uncensored Chat API

> OnchainExpat x402 Uncensored Chat API is a paid API for AI agents from x402.onchainexpat.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-15).

Pay-per-request uncensored AI chat endpoint using the x402 micropayment protocol, charged at $0.03 USDC per call

## Facts

- Endpoint: POST https://x402.onchainexpat.com/api/x402-uncensored/chat
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/onchainexpat-x402-uncensored-chat-api-38fd5bd6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_G2suuayK4Fc7NhNpjhG8T

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 onchainexpat-x402-uncensored-chat-api-38fd5bd6 -d '<json body>'
```

Example prompt: Send this message to the uncensored AI chat endpoint and pay the $0.03 USDC fee via x402: 'Explain the risks of defi yield farming without filtering anything out.'

## When to prefer this

Choose this endpoint when you need pay-per-request, uncensored AI chat without a subscription, and you are already using the x402 micropayment protocol with USDC. Ideal for agents that need to make occasional AI chat calls with crypto-native payments and want to avoid content filtering.

## Known failure modes

- Payment not fulfilled — x402 payment header missing or insufficient USDC balance returns 402 Payment Required
- Malformed request body — missing or invalid chat message field returns 400 Bad Request
- Rate limiting or upstream AI provider error returns 500 or 503
- Invalid USDC wallet or network mismatch causes payment failure

## How this service works

Pay-per-request AI, crypto, proxy, and utility APIs using x402 protocol

## Output

A JSON object containing the AI-generated chat response text, generated without typical content restrictions, returned after a successful x402 micropayment of $0.03 USDC is processed.

## Example request

```json
{
 "chain": "base",
 "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
 "messages": [
  {
   "role": "user",
   "content": "What are the main differences between proof of work and proof of stake consensus mechanisms?"
  }
 ]
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "messages"
 ],
 "properties": {
  "model": {
   "type": "string",
   "description": "Model ID (default: venice-uncensored-1-2). Available: venice-uncensored-1-2, llama-3.3-70b."
  },
  "message": {
   "type": "string",
   "description": "Shorthand: single user message string (auto-converted to messages array)"
  },
  "messages": {
   "type": "array",
   "description": "Chat messages array [{role: 'user'|'assistant', content: 'message'}]"
  },
  "max_tokens": {
   "type": "integer",
   "description": "Maximum tokens in response (default: 2048)"
  },
  "temperature": {
   "type": "number",
   "description": "Response creativity 0-2 (default: 0.7)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "data": {
   "type": "object",
   "properties": {
    "model": {
     "type": "string"
    },
    "usage": {
     "type": "object",
     "description": "Token usage stats"
    },
    "content": {
     "type": "string",
     "description": "Assistant's response"
    }
   }
  },
  "success": {
   "type": "boolean"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/onchainexpat-x402-uncensored-chat-api-38fd5bd6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.onchainexpat.com](https://www.zero.xyz/host/x402.onchainexpat.com/llms.txt)