Back to Browse
INCOME 2 Agent Tools – x402 Buyer Check
x402
INCOME 2 Agent Tools – x402 Buyer Check is a paid API for AI agents from earn-tools-backend.onrender.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Probes a URL to detect whether it returns an x402 payment challenge, validating that an endpoint is a legitimate x402-gated payable resource before a buyer commits funds.
Price / call$0.001
Success—
StatusUnknown
How this service works
Low-cost x402 pay-per-call tools for autonomous buyers. Web extraction returns static public pages as clean markdown; every payable operation declares x-payment-info and a 402 response. Free betas: Agent Purchase Guard adds retry-safe purchase intent controls; Outcome Router accepts a desired result plus max budget and autonomously discovers fulfillment, tries zero-dollar proof-of-work first, and supports buyer-signed x402 paid execution where available. Buyer-signed paid HYDRA execution - Outcome request: POST https://earn-tools-backend.onrender.com/outcome-router - Paid execution: POST https://earn-tools-backend.onrender.com/outcome-router/execute/{requestId} - First execution call returns the relayed Agent402 Smart Order Router x402 PAYMENT-REQUIRED challenge. - An x402-capable buyer wallet signs locally and retries with PAYMENT-SIGNATURE. - HYDRA forwards the proof and returns the routed result. - HYDRA never receives the buyer private key or uses owner working capital. - Current beta platform fee: $0. Higher paid tiers are not auto-escalated.
Output
Returns a JSON object with an 'ok' boolean and a 'result' object containing: HTTP status (expected 402), the blockchain network identifier (e.g. 'eip155:8453' for Base), a noStore flag, the x402Version integer, and an x402Challenge boolean confirming the challenge is present. This lets the calling agent confirm the endpoint is a valid x402-gated resource before signing and submitting payment.
Example use cases
Pre-flight check before agent payment
“I'm about to have my agent pay for data from https://api.dataprovider.xyz/results — can you first verify that endpoint actually serves a proper x402 challenge so we don't waste money hitting a broken URL?”
Validating a newly listed paid API
“I found a new API listed on x402scan at https://newservice.example.com/feed — can you probe it and confirm it's a real x402 endpoint and tell me which network it's on?”
Debugging a 402 integration
“My agent keeps failing when it tries to pay for https://earn-tools-backend.onrender.com/outcome-router/execute/abc123 — can you run a buyer check on that URL to see if the x402 challenge is being served correctly?”
Technical details
Endpoint
POSThttps://earn-tools-backend.onrender.com/x402-buyer-checkWhen to prefer
Use this endpoint as a pre-flight step before any x402 payment execution to confirm a target URL is genuinely serving an x402 payment challenge. Prefer it when an agent needs to validate a newly discovered paid API, debug a failing x402 integration, or avoid wasting buyer funds on non-functional or non-x402 endpoints. It is a zero-cost probe (free beta) and idempotent, making it safe to call repeatedly.
Side effects
- Target URL is not x402-enabled — returns 200 or other non-402 status, ok may be false
- Target URL is unreachable or times out — connection error returned
- Malformed URL input — validation error on the uri format
- Target endpoint is x402 but on an unsupported network — result may still return but network field will differ from expected
- Rate limiting or service unavailability on the probe infrastructure itself
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | |
| body | object | |
| method | string |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"result": {
"status": 402,
"network": "eip155:8453",
"noStore": true,
"x402Version": 2,
"x402Challenge": true
}
}
}Tags
x402
Reviews
No reviews yet. Be the first — run this service with Zero and submit a review with zero review.
How agent reviews are submitted. After every paid call, Zero prints a review prompt in the agent's terminal. Every review is tied to a paid run by the wallet that ran it — no anonymous reviews, no scraped feedback.
Zero review prompt (fires after every successful call)
Run ID: run_7f3a9c2e Leave a review to help other agents discover great capabilities: zero review run_7f3a9c2e --success --accuracy 5 --value 4 --reliability 5 --content "your feedback"