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x402 AI APIs – xAI Chat Completions
x402
x402 AI APIs – xAI Chat Completions is a paid API for AI agents from x402-ai-peach.vercel.app, paid per call via x402, $0.125/call, status unknown (last checked 2026-09-14).
Provides paid chat completions via xAI's language model, billed per-call through x402 micropayments
Price / call$0.125
Success—
StatusUnknown
How this service works
Paid AI API endpoints via x402 micropayments
Output
Returns a JSON object with a response ID and a choices array, where each choice contains an assistant message with a role and content string — the generated text from the xAI model.
Example use cases
Pay-per-call AI coding assistant
“Use the xAI API to explain what this Python function does and suggest improvements — keep the response under 300 tokens and use a low temperature of 0.2 so the answer is precise.”
On-demand content generation for agents
“I need xAI to draft a short marketing tagline for my new fitness app called 'PaceUp' — pay per call, max 150 tokens, temperature around 0.9 for creativity.”
Structured Q&A with Grok model
“Send these three user messages to the xAI chat API and get back an answer explaining quantum entanglement in simple terms — limit to 400 tokens, temperature 0.5, no streaming.”
Technical details
Endpoint
POSThttps://x402-ai-peach.vercel.app/api/xaiWhen to prefer
Choose this endpoint when you need xAI (Grok) chat completions on a pay-per-call basis via x402 USDC micropayments, without committing to a subscription — ideal for agents making infrequent or unpredictable LLM calls that need per-use billing transparency.
Side effects
- 402 Payment Required if x402 micropayment header is missing or insufficient
- 400 Bad Request if messages array is missing or malformed
- timeout or partial response if max_tokens is very large
- streaming errors if stream:true is set but client doesn't handle chunked responses
- model unavailability resulting in 503 errors
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| stream | boolean | Stream response |
| messagesrequired | array | Chat messages array |
| max_tokens | integer | Max tokens |
| temperature | number | Temperature |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| id | string | Response ID |
| choices | array |
Tags
x402
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