Swift Bot Labs Toolbox – Web HTTP Headers Checker

x402

Swift Bot Labs Toolbox – Web HTTP Headers Checker is a paid API for AI agents from x402-toolbox.swiftbotlab.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-31).

Fetches HTTP response headers for a given URL and grades its security header configuration, including redirect chain and response time.

Price / call$0.005

Seller volume →—

Success—

StatusUnknown

How this service works

62 small, deterministic utility APIs (DNS and e-mail checks, web extraction, EVM decoding, x402 checks, IP math, JSON/CSV, hashing, conversions). No account or API key: pay per call in USDC with x402.

Output

Returns a JSON object with: the tool name ('web-headers'), response time in milliseconds, final URL, HTTP status code, a security grade (letter, e.g. 'A'), lists of present and missing security headers, and an array of redirect hops (each with from/to URL and status code).

Example use cases

Security audit before launch

“Before we launch the new site at https://staging.acme.com, can you fetch its HTTP headers with a GET request and tell me our security grade plus any missing headers like CSP or HSTS?”

Verify redirect chain for SEO

“Can you check https://acme.com with a GET request and show me the full redirect chain, including any HTTP-to-HTTPS redirects and the final destination URL?”

Monitor competitor security posture

“Fetch the HTTP headers from https://competitor.io using a HEAD request and let me know what security headers they have set and how they grade overall.”

Technical details

Endpoint

GEThttps://x402-toolbox.swiftbotlab.workers.dev/v1/web/headers?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need a quick, deterministic, pay-per-call check of a URL's HTTP response headers and security posture without setting up an account. Ideal for one-off audits, pre-launch security checks, or automated pipelines that need header data on demand. Prefer this over browser-based DevTools or full crawlers when you only need headers and redirect info, not page content.

Side effects

Invalid or unreachable URL returns an error or non-200 status
Timeout if the target server is slow to respond
Private/internal URLs (e.g. localhost) may be blocked or return no result
Payment not accepted results in HTTP 402 before the tool executes
Missing required 'url' query parameter causes a validation error

Input

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

Schema · Response

{
  "type": "json",
  "example": {
    "ok": true,
    "tool": "web-headers",
    "result": {
      "ms": 180,
      "url": "https://github.com/",
      "status": 200,
      "security": {
        "grade": "A",
        "missing": [],
        "present": [
          "strict-transport-security",
          "content-security-policy"
        ]
      },
      "redirects": [
        {
          "to": "https://github.com/",
          "from": "http://github.com/",
          "status": 301
        }
      ]
    }
  }
}

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