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Coin Railz x402 Ping
x402
Coin Railz x402 Ping is a paid API for AI agents from coinrailz.com, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-15).
Lowest-cost test endpoint that verifies x402 payment flow, returns platform info, and echoes your message.
Price / call$0.25
Success—
StatusUnknown
How this service works
Lowest-cost test endpoint to verify x402 payment flow. Returns platform info and echoes your message.
Output
A JSON object with fields: success (boolean), service ('ping'), result ('Service executed successfully'), and a UTC timestamp — confirming that the x402 payment was accepted and the endpoint is reachable.
Example use cases
Smoke test before expensive calls
“Before I run any trading signal or sentiment analysis endpoints, do a cheap x402 ping on Coin Railz so I can confirm my payment flow is working end-to-end — use the message 'pre-flight check'.”
Verify crypto micropayment integration
“I just set up my x402 USDC wallet and I want to make sure everything is configured correctly. Send a test ping to Coin Railz for 25 cents with the message 'integration test' and tell me if the payment went through successfully.”
Confirm AI agent payment capability
“I need to verify that my AI agent can autonomously make crypto micropayments on its own. Run the cheapest available Coin Railz endpoint with the message 'agent payment test' and confirm the x402 handshake completed successfully.”
Technical details
Endpoint
POSThttps://coinrailz.com/x402/pingWhen to prefer
Choose this endpoint when you need to verify that your x402 payment integration is correctly configured at the lowest possible cost ($0.25 USDC). It is the canonical smoke-test before invoking more expensive Coin Railz endpoints like trading signals or sentiment analysis.
Side effects
- Payment not included or malformed x402 header — 402 Payment Required response
- Insufficient USDC balance — payment rejection before endpoint executes
- Network timeout if coinrailz.com is unreachable
- Invalid message format in POST body — may return 400 Bad Request
Input
{
"agentId": "qa-test-agent-001",
"networks": [
"ethereum",
"polygon"
],
"agentName": "QA Test Agent"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| query | string | Query parameter for the service |
Output
{
"echo": "pong",
"chains": [
"ethereum",
"base",
"polygon",
"bsc",
"arbitrum",
"optimism",
"pulsechain"
],
"service": "Coin Railz x402 Payment Infrastructure",
"success": true,
"version": "0.4.0",
"agentCard": "https://coinrailz.com/.well-known/agent.json",
"timestamp": "2026-06-12T04:36:29.925Z",
"documentation": "https://coinrailz.com/developers",
"responseTimeMs": 0,
"servicesAvailable": 33
}Schema · Response
{
"type": "application/json",
"format": "json",
"example": {
"result": "Service executed successfully",
"service": "ping",
"success": true,
"timestamp": "2026-02-07T01:34:17.367Z"
}
}Tags
x402
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