# Services from api.chit402.com on Zero

> api.chit402.com serves 4 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/api.chit402.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/api.chit402.com/health.json

## Services

- [Chit402 Chat Completions](https://www.zero.xyz/c/chit402-chat-completions-0564ca4d/llms.txt): $0.002/call via x402. Runs OpenAI-compatible chat completions paid per-call with real USDC on Base or Solana via the x402 payment protocol, returning a signed receipt.
- [Chit402 Paid AI Inference via x402](https://www.zero.xyz/c/chit402-paid-ai-inference-via-x402-f35fddc4/llms.txt): $0.002/call via x402. Submits a paid AI inference request over the x402 USDC payment protocol, returning a receipted task ID and payment reference for treasury tracking.
- [Chit402 Task Request — Paid AI Inference via x402](https://www.zero.xyz/c/chit402-task-request-paid-ai-inference-via-x402-7dd97701/llms.txt): $0.002/call via x402. Submit an AI inference task (chat completion) with USDC micro-payment on Base, receiving a receipted task ID and payment proof.
- [Chit402 A2A Message — Paid LLM Inference with USDC Receipts](https://www.zero.xyz/c/chit402-a2a-message-paid-llm-inference-with-usdc-receipts-871ac5ed/llms.txt): $0.002/call via x402. Sends a chat completion request to a paid LLM endpoint over x402, deducting USDC per call and returning an OpenAI-compatible response with a verifiable receipt URL.

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

- [Zero catalog index](https://www.zero.xyz/llms.txt)