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AgentShelf URL HTTP Scheme Checker
x402
AgentShelf URL HTTP Scheme Checker is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-11).
Checks whether a given URL uses the HTTP (not HTTPS or other) scheme, returning a boolean result without fetching the URL.
Price / call$0.005
Success—
StatusUnknown
How this service works
Call when an agent needs whether a URL uses the http scheme. No fetch. Send JSON {"value":"http://example.com/a"}. Exact $0.005 USDC on Base. Try unpaid POST /v1/sandbox/check-url-http first.
Output
Returns a validation result indicating whether the provided URL uses the 'http' scheme (as opposed to 'https', 'ftp', or other schemes). No network fetch is performed — the check is purely scheme-based on the string value of the URL.
Example use cases
Detect insecure HTTP links in content
“I have a list of URLs scraped from a webpage and I need to flag any that use plain HTTP instead of HTTPS. Can you check whether http://old-site.example.com/resource uses the http scheme?”
Security audit before redirect
“Before we redirect users to this partner URL, can you verify it's using HTTP and not HTTPS — just check the scheme without loading the page: http://partner.legacy-system.net/api”
Automated pipeline scheme gate
“In my data pipeline, I need to reject any URLs using insecure HTTP. Can you check if http://cdn.thirdparty.io/assets/file.js is an HTTP URL?”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/check-url-http?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a lightweight, no-fetch check to determine whether a URL string uses the HTTP scheme. It is appropriate when you only care about the scheme portion of the URL and do not need to retrieve or parse page content. Prefer the free sandbox alternative (/v1/sandbox/check-url-http) if available before incurring the $0.005 USDC cost.
Side effects
- Empty or missing URL value returns an error
- Malformed input that is not a valid URL string may return an error or unexpected result
- Ambiguous scheme (e.g. protocol-relative URLs starting with //) may not match as http
- Service unavailability returns a non-200 response or payment-related 402 error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| data | — | JSON value for schema-check SKUs. Omit it on string checks such as email or IBAN. |
| value | string | Value to check. The route description names the format: email, phone, IBAN, postal code, VAT, national id, or similar. |
| schema | — | JSON Schema document for schema-check SKUs. Omit it on string checks. |
Tags
x402
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