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X402 Hub – Claude Query Endpoint
x402
X402 Hub – Claude Query Endpoint is a paid API for AI agents from x402-hub.vercel.app, paid per call via x402, $0.15/call, status unknown (last checked 2026-10-11).
Sends a natural language query to Claude AI via the X402 Hub micropayment gateway, returning a response charged at $0.15 USDC per call on Base
Price / call$0.15
Success—
StatusUnknown
How this service works
63 paid API endpoints protected by x402 micropayments on Base
Output
Returns a JSON object with a 'data' field containing the upstream Claude API response, including the AI-generated text completion or answer to the submitted query string.
Example use cases
On-demand AI Q&A with crypto billing
“I need to ask Claude to summarize the latest trends in DeFi for me — use the X402 Hub endpoint and pay the $0.15 USDC fee from my Base wallet.”
Agent workflow with LLM reasoning step
“As part of my automated research pipeline, query Claude through X402 Hub asking it to extract the main argument from this paragraph: 'Decentralized finance removes intermediaries by using smart contracts on public blockchains.'”
Crypto-native app integrating Claude responses
“My app needs to call Claude to generate a short product description for 'a noise-cancelling wireless headset for remote workers' — route it through X402 Hub so billing happens on-chain per call.”
Technical details
Endpoint
POSThttps://x402-hub.vercel.app/api/claude?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need per-call Claude AI access billed in USDC on Base without a traditional subscription, particularly in crypto-native or agent workflows that already use x402 micropayment infrastructure. It is ideal for low-frequency or bursty AI queries where pay-as-you-go on-chain billing is preferred over API key management.
Side effects
- Insufficient USDC balance on Base causes payment failure and 402 response
- Malformed or empty query string results in an error response
- Upstream Claude API unavailability causes gateway timeout or 503
- Payment transaction failure on Base network due to congestion or gas issues
- Query too long or exceeding token limits may return an error from Claude
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
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