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Tollex x402 Endpoint Inspector
x402
Tollex x402 Endpoint Inspector is a paid API for AI agents from api.tollex.org, paid per call via x402, $0.0079/call, status unknown (last checked 2026-10-11).
Inspects a URL to determine if it is an x402-compatible paid API endpoint and returns its payment requirements and capability metadata
Price / call$0.0079
Success—
StatusUnknown
How this service works
Tollex lets software agents buy APIs and tools under rules you set: it finds a capability that fits, checks your policy before anything is signed, pays with x402 in USDC on Base or USDG on Robinhood Chain, reconciles uncertain payments and returns a signed receipt.
Output
Returns a structured report on whether the target URL supports the x402 payment protocol, including accepted stablecoins (USDC on Base, USDG on Robinhood Chain), per-call price, supported blockchain networks, payment policy details, and a signed receipt confirming the inspection.
Example use cases
Pre-flight check before agent payment
“Before my agent pays for the data feed at https://api.dataprovider.io/v2/prices, inspect that endpoint to confirm it supports x402, what it charges, and whether it accepts USDC on Base.”
Vetting a new tool for agent policy
“I want to add a new API tool to my agent's allowed list — can you inspect https://tools.example.com/summarize to see if it's x402-compliant and what the per-call cost is so I can decide if it fits my spending policy?”
Debugging a failed autonomous payment
“My agent tried to pay for https://api.speechsynthesis.io/tts but the payment didn't go through — can you inspect that endpoint to see exactly what x402 payment parameters it expects, including accepted tokens and network?”
Technical details
Endpoint
POSThttps://api.tollex.org/tools/x402_inspect_endpoint?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to programmatically verify whether a specific URL implements the x402 paid-API standard before committing a payment or adding it to an agent's tool policy. It is the right choice when you want machine-readable payment metadata (token type, chain, price) rather than just checking HTTP headers manually. Prefer it over generic HTTP probing when you need a signed, reconcilable inspection receipt for audit or policy compliance.
Side effects
- URL does not support x402 — endpoint returns no 402 payment-required header, inspection reports non-compliance
- Malformed URL input — rejected by pattern validation if scheme is not http/https
- Endpoint unreachable or timeout — network error returned if target host is down
- URL exceeds 2048 character limit — request rejected with validation error
- Endpoint returns ambiguous or malformed x402 headers — payment requirements cannot be reliably parsed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string |
Output
Schema · Response
{
"type": "json",
"example": {
"tool": {
"id": "x402_inspect_endpoint",
"version": "1.0.0",
"provider": "tollex.robinhood-chain"
},
"result": {
"error": null,
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"payTo": "0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"payable": true,
"resource": {
"url": "https://api.example.com/paid"
},
"latencyMs": 180,
"extensions": [
"bazaar"
],
"httpStatus": 402,
"acceptsHash": "0x7a3d7400b27830f4f91c2c16a082486d67c1befecaec2f53b33f1f35d5b62036"
},
"evidence": [],
"untrustedOutput": true
}
}Tags
x402
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