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X402 Hub – xAI Query Endpoint
x402
X402 Hub – xAI Query Endpoint is a paid API for AI agents from x402-hub.vercel.app, paid per call via x402, $0.125/call, status unknown (last checked 2026-09-29).
Sends a natural language query to xAI (Grok) via a micropayment-gated proxy, returning AI-generated responses for $0.125 USDC per call
Price / call$0.125
Success—
StatusUnknown
How this service works
63 paid API endpoints protected by x402 micropayments on Base
Output
Returns a structured JSON object with a 'data' field containing the xAI/Grok model's response to the submitted query, including generated text or inference output.
Example use cases
On-demand AI research assistant
“Use the xAI Grok endpoint to answer this for me: 'Summarize the most significant breakthroughs in protein folding research over the last two years.'”
Pay-per-query AI coding help
“Send this to xAI Grok and give me the answer: 'Write a Python function that parses nested JSON and flattens it into a single-level dictionary with dot-notation keys.'”
Agent fact-checking via Grok
“Query xAI with this question: 'Is it true that the James Webb Space Telescope can directly image Earth-like exoplanet atmospheres, and what has it found so far?'”
Technical details
Endpoint
POSThttps://x402-hub.vercel.app/api/xai?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need pay-per-call access to xAI's Grok model without a subscription, especially in agentic workflows that require on-demand AI inference billed in USDC micropayments via the x402 protocol. Prefer this over subscription-based xAI API access when cost-per-query is more efficient than flat monthly pricing, or when your agent needs to dynamically access multiple AI providers and wants unified x402 payment semantics.
Side effects
- Payment failure if wallet has insufficient USDC balance — returns 402 Payment Required
- Invalid or missing 'query' field returns a 400 Bad Request
- xAI upstream API outage or rate limit may return 502 or 503
- Malformed query string may return empty or low-quality response data
- Network timeout from upstream xAI latency
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| queryrequired | string | Query parameter for the API |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| data | object | Response data from upstream API |
Tags
x402
Reviews
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