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Forest Gas Station x402 Preflight Probe
x402
Forest Gas Station x402 Preflight Probe is a paid API for AI agents from http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-02).
Performs a read-only preflight probe of an x402 PaymentRequired endpoint to inspect its payment requirements without actually executing a payment.
Price / call$0.002
Success—
StatusUnknown
How this service works
Read-only probe of x402 PaymentRequired requirements; does not pay. Base mainnet USDC
Output
Returns the x402 PaymentRequired metadata for the given URL, including the required payment amount, accepted token (e.g. USDC), payment network (e.g. Ethereum mainnet or Base), and recipient payment address — without executing any payment transaction.
Example use cases
Pre-call cost inspection for agent budgeting
“Before my agent calls that paid data endpoint at https://api.example.com/v1/weather, can you check the x402 preflight to see how much it costs and what token it wants, so I can decide if it fits my budget?”
Validating a new x402 integration
“I just deployed a new x402-protected API at https://myservice.io/protected — can you run the preflight probe to confirm the payment requirements are being advertised correctly?”
Comparing payment terms across multiple endpoints
“I'm evaluating a few paid APIs — can you check the x402 payment requirements for https://dataservice.io/endpoint-a and https://dataservice.io/endpoint-b so I can compare their costs and accepted tokens before choosing one?”
Technical details
Endpoint
POSThttps://http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run/x402/preflight?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to inspect the payment terms of an x402-gated API before committing funds — ideal for budget checks, integration validation, or comparing costs across multiple paid endpoints without triggering any actual payment. Prefer this over directly calling the paid endpoint when you are uncertain about the cost or token type required.
Side effects
- URL does not return an x402 PaymentRequired response (not a paid endpoint)
- URL is unreachable or returns a non-402 HTTP error
- Malformed or non-compliant x402 headers on the target endpoint
- Invalid or missing URL input
- Timeout reaching the target URL
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | Public HTTP(S) URL to inspect, resolve, or compare. |
Tags
x402
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