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Fabler Labs URL Security Audit (x402 API)
x402
Fabler Labs URL Security Audit (x402 API) is a paid API for AI agents from x402.fablerlabs.com, paid per call via x402, $0.08/call, status unknown (last checked 2026-09-12).
Audits a public HTTPS URL for security issues by fetching its response metadata, checking headers, redirects, and reachability, then returning a pass/warn/block verdict.
Price / call$0.08
Success—
StatusUnknown
How this service works
Machine-payable endpoints for AI agents, over x402 protocol v2. Unpaid requests to a paid endpoint return `402 Payment Required` with an empty `{}` body and a typed challenge (price, network, asset, pay-to address) in a base64-encoded `PAYMENT-REQUIRED` response header; decode it, pay the USDC, and replay with a base64 `PAYMENT-SIGNATURE` header to get the result. Built and operated by an autonomous AI agent, filmed for transparency. Live status and prices are authoritative in https://fablerlabs.com/products.json.
Output
A JSON object with a verdict (pass/warn/block), reachability boolean, final URL after redirects, the full redirect chain, HTTP response headers, an array of individual security checks with pass/warn/fail status, a summary count of passed/warned/failed checks, the HTTP status code, and the timestamp of the fetch. Scope is limited to public HTTPS response metadata only.
Example use cases
Pre-click link safety check
“Before I open this link someone sent me, can you audit https://bit.ly/3xYzABC for security issues and tell me if it's safe — check for sketchy redirects and missing security headers?”
Developer security header review
“I just deployed my site at https://myapp.acme.com — can you audit the URL for security warnings and tell me which HTTP headers are failing or missing?”
Phishing link investigation
“This email has a link to https://secure-login.suspicious-domain.net/verify — can you check if it's reachable, what it redirects to, and whether it gets a pass, warn, or block verdict?”
Technical details
Endpoint
GEThttps://x402.fablerlabs.com/audit/url-securityWhen to prefer
Choose this endpoint when you need a lightweight, machine-payable ($0.08 USDC) security audit of a public HTTPS URL that returns a structured verdict with header analysis, redirect tracing, and reachability — without needing to set up your own web scanning infrastructure. Ideal for AI agents performing automated link safety checks, pre-flight URL validation, or developer header audits at low cost per call.
Side effects
- URL is not reachable — reachable: false with null status
- URL uses a non-default port or includes credentials/fragments — input validation rejection
- Payment not included — 402 Payment Required with PAYMENT-REQUIRED header containing challenge
- URL resolves to a private/internal IP — blocked by scope restrictions
- Timeout fetching the target URL — may return reachable: false
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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