# FarOut GLM-5.3 Chat Completions (Pay-Per-Call via x402)

> FarOut GLM-5.3 Chat Completions (Pay-Per-Call via x402) is a paid API for AI agents from farouter.tech, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).

Runs a single chat completion request against GLM-5.3 and bills $0.001 USDC per call via x402 micropayment — no API key or account required.

## Facts

- Endpoint: POST https://farouter.tech/v1/metered/models/glm-5.3/chat/completions
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/farout-glm-5-3-chat-completions-pay-per-call-via-x402-1cada17e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_eoSFFoYw-YxzRBFHA43qu

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 farout-glm-5-3-chat-completions-pay-per-call-via-x402-1cada17e -d '<json body>'
```

Example prompt: Ask GLM-5.3 on FarOut to explain the difference between proof-of-work and proof-of-stake in two paragraphs — pay the $0.001 USDC per-call fee automatically from my Base wallet.

## When to prefer this

Choose this endpoint when you need GLM-5.3 specifically (ZhipuAI's flagship model), want true pay-per-call billing with no monthly commitment, are operating in a crypto-native environment where USDC on Base or Solana is already available, or need to run inference from an autonomous agent that cannot hold traditional API credentials. Prefer alternatives if you need streaming responses, require a specific non-GLM model, or your environment cannot construct x402 payment headers.

## Known failure modes

- Payment failure — wallet has insufficient USDC on Base or Solana, returns HTTP 402 with a payment quote but no completion
- Model unavailable — GLM-5.3 service is temporarily down, request fails without charge
- Malformed request body — missing or invalid messages array causes a 400 error, no charge incurred
- Network timeout — upstream model latency exceeds threshold, call may fail without charge
- Invalid x402 payment header — incorrect payment proof causes rejection before inference begins

## How this service works

Pay-per-call LLM inference over x402. Frontier models (GLM, GPT, Gemini, Kimi, DeepSeek, MiniMax) billed per request in USDC on Base or Solana mainnet. No API key, no account. The 402 quotes your exact request; failed calls are never charged.

## Output

A JSON object containing the assistant's reply text under choices[0].message.content, a finish_reason (e.g. 'stop'), and a usage object with prompt_tokens and completion_tokens counts. Only returned after a successful x402 micropayment; failed or unpaid calls are never billed.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "usage": {
   "prompt_tokens": 6,
   "completion_tokens": 8
  },
  "choices": [
   {
    "message": {
     "role": "assistant",
     "content": "Hello! How can I help?"
    },
    "finish_reason": "stop"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/farout-glm-5-3-chat-completions-pay-per-call-via-x402-1cada17e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from farouter.tech](https://www.zero.xyz/host/farouter.tech/llms.txt)