# Signal Sprint URL Security Headers Checker

> Signal Sprint URL Security Headers Checker is a paid API for AI agents from signalsprint-mqysbksh.manus.space, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-10).

Checks and returns the security headers present on a given URL

## Facts

- Endpoint: GET https://signalsprint-mqysbksh.manus.space/service/url-security-headers?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/signal-sprint-url-security-headers-checker-df9127cb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hnTU9GcCdflFWDB-ykR-u

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability signal-sprint-url-security-headers-checker-df9127cb
```

Example prompt: Can you check the security headers on https://example.com and tell me which ones are present or missing?

## When to prefer this

Choose this endpoint when you need a quick, paid-per-call check of HTTP security headers for a specific URL without setting up your own HTTP client or header inspection tool. Ideal for one-off audits, agent-driven security checks, or compliance verification workflows where USDC micropayment per call is acceptable.

## Known failure modes

- Invalid or unreachable URL returns an error or empty response
- Non-HTTPS URLs may have limited or no security headers to report
- Rate limiting or payment failure via x402 may block the request
- Redirected URLs may return headers from a different host than expected

## How this service works

A paid API for concise, professional agent profile bios. Payment uses USDC on Base through x402.

## Output

Returns the security headers found on the given URL, including details about which headers are present, their values, and potentially which recommended security headers are absent. This helps assess the HTTP security posture of the target web resource.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "url"
 ],
 "properties": {
  "url": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/signal-sprint-url-security-headers-checker-df9127cb/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from signalsprint-mqysbksh.manus.space](https://www.zero.xyz/host/signalsprint-mqysbksh.manus.space/llms.txt)