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GateCheck by LarryBuildsAI – x402 Agent Tool Preflight Scanner
x402
GateCheck by LarryBuildsAI – x402 Agent Tool Preflight Scanner is a paid API for AI agents from x402-resource-scanner.vercel.app, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-14).
Performs preflight readiness checks on a URL to verify it is properly configured as a paid x402 agent tool before marketplace listing, including seller-readiness, unpaid path probes, and launch-pack artifact validation.
Price / call$0.25
Success—
StatusUnknown
How this service works
Preflight checks for paid agent tools: GateCheck seller-readiness checks, unpaid x402 paid-path probes, and launch-pack artifacts before marketplace listing.
Output
Returns a preflight report covering x402 seller-readiness status, results of unpaid path probes against the target URL, and validation of launch-pack artifacts required for marketplace listing, including pass/fail details for each check.
Example use cases
Example prompt
“Run GateCheck preflight scans on https://my-agent-tool.example.com before I list it — I'm expecting 3 paid resources and my marketplace listing is at https://marketplace.example.com/tools/my-tool.”
Technical details
Endpoint
GEThttps://x402-resource-scanner.vercel.app/v1/x402/scanWhen to prefer
Use this endpoint when you need to programmatically verify that a paid x402 agent tool endpoint is correctly configured and ready for marketplace listing — specifically when you want automated seller-readiness checks, unpaid path probing, and launch-pack artifact validation in one call, rather than manually inspecting x402 headers or guessing at compliance.
Side effects
- Target URL is unreachable or returns unexpected status codes
- URL does not implement x402 payment headers correctly, causing probe failures
- Expected resource count mismatch triggers validation error
- Marketplace URL is invalid or inaccessible
- Endpoint times out if target server is slow to respond
- Missing launch-pack artifacts cause listing readiness to fail
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| urlrequired | string | |
| marketplace_url | string | |
| expected_resources | integer |
Tags
x402
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