# Landing en 24h Web Audit

> Landing en 24h Web Audit is a paid API for AI agents from landingen24h.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-27).

Audits a public URL for SEO, performance, security headers, and mobile-readiness issues, returning a grade, score, and actionable issue list.

## Facts

- Endpoint: POST https://landingen24h.com/api/x402/web/audit?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-27
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/landing-en-24h-web-audit-059a0d6b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bUDBr3hBlEk6ez-t8TS3e

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 landing-en-24h-web-audit-059a0d6b -d '<json body>'
```

Example prompt: Can you audit https://mybakery.com and tell me what SEO and security issues it has, along with an overall grade?

## When to prefer this

Choose this endpoint when you need a lightweight, instant technical audit of a single public URL covering SEO basics (meta description, H1), security headers, HTTPS, and mobile viewport — especially for landing pages. It is ideal for quick pre-launch checks or client diagnostics where you want a graded report with actionable issues without setting up a full crawling tool.

## Known failure modes

- Non-public or unreachable URL returns an error or incomplete results
- URLs behind authentication or firewalls may not be auditable
- Timeouts on slow-loading pages may produce incomplete response_ms data
- Malformed or non-http(s) URLs may be rejected by schema validation

## How this service works

Landing page para tu negocio en 24 horas: textos, diseño para celular y botón de WhatsApp. Boceto gratis: ves la primera versión antes de pagar. USD 39 de lanzamiento.

## Output

Returns a JSON object containing the audited URL, a letter grade (e.g. 'C'), a numeric score (0–100), a checks object with boolean/numeric results for HTTPS, HTTP status, H1 count, response time in ms, and viewport meta presence, plus an array of issues each with a code, human-readable message, and severity level (low/medium/high).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string",
   "maxLength": 500,
   "description": "Public http(s) URL to audit"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "url": "https://example.com/",
  "grade": "C",
  "score": 62,
  "checks": {
   "https": true,
   "status": 200,
   "h1_count": 0,
   "response_ms": 180,
   "viewport_meta": true
  },
  "issues": [
   {
    "code": "missing_meta_description",
    "message": "Missing meta description.",
    "severity": "medium"
   },
   {
    "code": "no_h1",
    "message": "No <h1> heading.",
    "severity": "medium"
   },
   {
    "code": "security_headers_missing",
    "message": "Missing security headers: hsts, csp, x_frame_options, x_content_type_options, referrer_policy.",
    "severity": "medium"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/landing-en-24h-web-audit-059a0d6b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from landingen24h.com](https://www.zero.xyz/host/landingen24h.com/llms.txt)