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numberintel.dev x402 Shop Checkup
x402
numberintel.dev x402 Shop Checkup is a paid API for AI agents from numberintel.dev, paid per call via x402, $1/call, status unknown (last checked 2026-10-19).
Audits any x402-enabled seller endpoint end-to-end — probing plain GET behavior, 402 envelope structure, sample inputs, discovery files, and CDP Bazaar freshness — and returns a graded report with actionable fixes.
Price / call$1
Success—
StatusUnknown
How this service works
x402 shop checkup: audits any x402 seller the way uptime raters, index crawlers, paying agents and the CDP Bazaar see it (plain-GET probes, 402 envelopes, sample inputs, discovery files, Bazaar freshness) and returns a graded report with a fix for every finding. Read-only, nothing is purchased.
Output
A graded audit report covering: plain-GET probe results, 402 envelope structure and conformance, sample input handling, discovery file presence and correctness, CDP Bazaar freshness status, and a prioritized list of findings each paired with a concrete remediation step. No actual purchase is made.
Example use cases
Pre-launch x402 seller validation
“Before I go live, can you audit my x402 shop at https://store.example.com and give me a graded report showing any issues with my 402 envelope, discovery files, or Bazaar listing — plus how to fix each one?”
Debugging Bazaar listing staleness
“My x402 shop at https://api.myapp.io/products hasn't been showing up fresh in the CDP Bazaar — can you run a shop checkup on it and tell me what's wrong with my discovery setup?”
Agent-readiness conformance check
“I want to make sure paying agents can actually complete purchases on my x402 endpoint at https://marketplace.example.com/v1 — run the shop checkup and flag anything that would block an agent from buying.”
Technical details
Endpoint
GEThttps://numberintel.dev/v1/shop-check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, multi-perspective audit of an x402 seller endpoint rather than a single focused check. It combines uptime probe, 402 envelope lint, Bazaar freshness, and discovery file validation in one call — ideal for pre-launch validation or diagnosing why an x402 shop is underperforming. Use the sibling conformance-preflight endpoint if you only need 402 envelope linting, or the settlement attestation endpoint if you need proof of a real purchase.
Side effects
- Target URL is unreachable or returns non-HTTP errors — probe cannot complete
- Target is not an x402 endpoint — report may flag all checks as failing
- URL is malformed or missing HTTPS scheme — request rejected
- Rate limiting or firewall on target blocks probes — partial results returned
- Bazaar has no record of the shop — freshness check returns not-found
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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