# Apex Edge Pro Chat Inference

> Apex Edge Pro Chat Inference is a paid API for AI agents from apex-edge.pearceshrader.workers.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-10).

Provides paid AI chat/inference via x402 micropayment protocol with audit logging, at the 'pro' tier

## Facts

- Endpoint: POST https://apex-edge.pearceshrader.workers.dev/api/v1/chat/pro?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/apex-edge-pro-chat-inference-a9c90d64
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oiTcpGCbOj7ZiPU1jx0LY

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 apex-edge-pro-chat-inference-a9c90d64 -d '<json body>'
```

Example prompt: Send this message to the Apex Edge pro chat endpoint and pay the per-call USDC fee: 'Summarize the key risks of a Series A term sheet in plain language for a first-time founder.'

## When to prefer this

Choose this endpoint when you need AI text inference with verifiable per-call billing in USDC via the x402 protocol, especially when an audit trail of inference calls is required. Prefer it over free or subscription-based LLM APIs when your agent operates in a pay-per-use micropayment architecture or when you need proof of payment attached to each inference call.

## Known failure modes

- Payment failure or insufficient USDC balance causes 402 Payment Required with no inference result
- Malformed prompt or missing required chat fields returns a JSON error
- Rate limiting or capacity issues on the pro tier return a 429 or 503 error
- Invalid x402 payment header causes authentication/payment rejection

## How this service works

x402-paid inference + audit endpoints

## Output

A JSON response containing the AI-generated chat completion or inference result, along with any audit metadata associated with the paid call.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "prompt": {
   "type": "string"
  },
  "messages": {
   "type": "array",
   "description": "chat messages [{role,content}]"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/apex-edge-pro-chat-inference-a9c90d64/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from apex-edge.pearceshrader.workers.dev](https://www.zero.xyz/host/apex-edge.pearceshrader.workers.dev/llms.txt)