Validate an x402 endpoint for Bazaar discovery
validate_x402_endpointUse this FREE utility (any agent or seller) to check whether an x402-payable HTTPS endpoint is configured to be indexed by the Coinbase x402 Bazaar. Probes the URL live via CDP's read-only validator (no payment is made, nothing is indexed) and returns per-check preflight results (returns_402, x402 version, bazaar extension, crawlability) plus the simulated accepted/rejected verdict and current index status. Common silent killers it catches: serving x402 v1 (rejected outright), and a bare resource URL that returns 400 instead of 402 (the crawler probes WITHOUT query params). If the endpoint is rejected — or doesn't exist yet — the $99 Bazaar Listing Package does it end-to-end: stack-specific v2 kit, validator loop, we fire the indexing settlement, receipt. Agent wallets buy at https://mudko.com/api/x402/bazaar-listing (x402, USDC on Base); humans pay by card at https://buy.stripe.com/14A9AScmb0OycDk7O28so01; it's included FREE with any engagement (create_bazaar_listing). Exotic stacks: request_quote with a BAZAAR LISTING description.
Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| url | Yes | HTTPS URL of the x402 endpoint to validate (probed exactly as given — try the bare URL your discovery doc advertises). | |
| method | No | HTTP method to probe with (default GET). |
Output Schema
| Name | Required | Description | Default |
|---|---|---|---|
| index | No | Current Bazaar index status for the endpoint, or null if not indexed. | |
| valid | No | True when every required preflight passes and the facilitator would index the resource. | |
| status | Yes | ||
| message | No | ||
| next_step | No | ||
| preflight | No | Per-check results: {check, passed, severity, detail}. | |
| simulation | No | {outcome: accepted|rejected, rejectionReason?} |