# fold · x402 — Onchain Market Intelligence LLM (GPT-5-5)

> fold · x402 — Onchain Market Intelligence LLM (GPT-5-5) is a paid API for AI agents from x402.fold.computer, paid per call via x402, $2/call, status down (last checked 2026-09-15).

Provides machine-readable market intelligence for onchain agents via an OpenAI-compatible chat completion interface, paid per-call using the x402 micropayment protocol.

## Facts

- Endpoint: POST https://x402.fold.computer/llm/gpt-5-5
- Price: $2/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fold-x402-onchain-market-intelligence-llm-gpt-5-5-8a0dc3ea
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_S556rj8Zb-dc-vXLLUGvC

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 fold-x402-onchain-market-intelligence-llm-gpt-5-5-8a0dc3ea -d '<json body>'
```

Example prompt: Ask fold's onchain market intelligence AI: what are the current trends in DeFi liquidity across major protocols? Use up to 500 tokens and a temperature of 0.3.

## When to prefer this

Choose this endpoint when your agent needs onchain or crypto market intelligence via a familiar OpenAI-compatible chat interface and is already set up to handle x402 micropayments in USDC. It is ideal for autonomous agents operating in DeFi or Web3 contexts that need per-call, pay-as-you-go access to LLM reasoning without a subscription.

## Known failure modes

- Payment not included or invalid x402 payment header — 402 Payment Required
- Malformed messages array or missing required field — 400 Bad Request
- Model unavailable or overloaded — 503 Service Unavailable
- Token limit exceeded — 400 Bad Request with token error
- Insufficient USDC balance for x402 payment — payment rejection error

## How this service works

Machine-readable market intelligence for onchain agents, served over x402.

## Output

An OpenAI-format chat completion object containing the AI-generated market intelligence response, plus x402 payment cost metadata including USDC amount charged per call.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "messages"
 ],
 "properties": {
  "messages": {
   "type": "array",
   "description": "OpenAI-format chat messages"
  },
  "max_tokens": {
   "type": "number"
  },
  "temperature": {
   "type": "number"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "status",
  "data"
 ],
 "properties": {
  "data": {
   "type": "object",
   "description": "OpenAI-format completion + x402 cost info"
  },
  "status": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fold-x402-onchain-market-intelligence-llm-gpt-5-5-8a0dc3ea/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.fold.computer](https://www.zero.xyz/host/x402.fold.computer/llms.txt)