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X402 Catalog Route Check
x402
X402 Catalog Route Check is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).
Validates a single x402 catalog route by checking tool, method, path, and price against bounded caller-supplied values, returning acceptance or rejection with mismatch reasons and normalized evidence.
Price / call$0.001
Success—
StatusUnknown
How this service works
X402 Catalog Route Check: X402 Catalog Route Check checks one catalog route for tool, method, path, and positive price from bounded caller-supplied values without an external provider. Call X402 Catalog Route Check before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for X402 Catalog Route Check as versioned det…
Output
Returns a structured verdict for the route including: explicit acceptance or rejection status, contract-specific check results, normalized evidence derived from the route, and a list of mismatch reasons if the route fails any check. No external provider is called; all processing is in-memory and bounded.
Example use cases
Pre-payment x402 route safety check
“I'm about to pay for an x402 API call but I want to verify the route first — can you run this route object through the catalog route check and tell me if the tool, method, path, and price all look correct before I authorize anything?”
Detecting tampered agent delivery metadata
“An agent returned this x402 route as part of a delivery result — before I accept it, can you check the route metadata for mismatches or anything suspicious and give me the acceptance or rejection verdict?”
Validating a freshly assembled x402 challenge
“I just assembled an x402 challenge from caller-supplied values and I need to know if the route is clean — run it through the catalog route check and show me any mismatch reasons and the normalized evidence.”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/x402-catalog-route-checkWhen to prefer
Use this endpoint when you need a lightweight, in-memory, provider-free validation of a single x402 catalog route before paying for or accepting an x402 call. Prefer it over manual inspection when you need structured mismatch reasons and a deterministic accept/reject verdict. Ideal for pre-payment guard rails in agentic workflows where the route metadata is caller-supplied and cannot be implicitly trusted.
Side effects
- Route object exceeds 128 properties (maxProperties limit), causing a validation error
- Missing required route fields (tool, method, path, price) may result in incomplete checks or rejection
- Caller-supplied values that are malformed or out of expected bounds may produce a rejection with mismatch reasons
- Network or service unavailability returns a non-200 response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| route | object | Route supplied to X402 Catalog Route Check; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"valid": true,
"checks": {
"post": true,
"x402_path": true,
"positive_price": true,
"required_present": true
},
"missing_fields": []
},
"schema": "delx/util-x402-catalog-route-check/v1",
"status": "pass",
"evidence": {
"retained": false,
"input_sha256": "9dc71648dce13552b300e68108c726ac002d670dfe5442b398a035206009d2be",
"external_calls": 0
},
"operation": "delivery_contract:x402_catalog_route_check"
}
}Tags
x402
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