# Website SEO Audit API

> Website SEO Audit API is a paid API for AI agents from api.kadec0.xyz, paid per call via x402, $0.08/call, status unknown (last checked 2026-09-14).

Performs an instant on-page SEO, performance, and accessibility audit for any given URL, returning title, meta tags, headings, links, image alt attributes, load time, issues list, and an overall score.

## Facts

- Endpoint: GET https://api.kadec0.xyz/v1/website-audit
- Price: $0.08/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/website-seo-audit-api-01e2b263
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NAwn3Z9sBb-0cTGEgvFjd

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 website-seo-audit-api-01e2b263
```

Example prompt: Can you run a quick SEO audit on https://www.example.com and tell me about the title, meta tags, headings, image alt text, load time, and any issues found?

## When to prefer this

Choose this endpoint when you need a fast, single-call on-page SEO and accessibility snapshot for a specific URL without setting up a full crawler. Ideal for quick audits of landing pages, competitor pages, or newly published content where you want title, meta, headings, links, image alt, load time, and an issues list in one response.

## Known failure modes

- Invalid or unreachable URL returns an error indicating the page could not be fetched
- Timeout if the target page loads too slowly
- Malformed URL query parameter results in a 400 bad request
- Rate limiting or payment failure if USDC payment is not processed correctly
- Pages behind authentication walls may return incomplete audit data

## How this service works

Instant website SEO audit. On-page SEO, performance, and accessibility snapshot for any URL — title, meta tags, headings, links, image alt, load time, and an issues list with score.

## Output

Returns a structured SEO audit report including the page title, meta description, heading structure (H1-H6), internal and external links, image alt attributes, page load time, an overall SEO score, and a list of detected issues such as missing tags, accessibility problems, or performance concerns.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "url"
     ],
     "properties": {
      "url": {
       "type": "string",
       "description": "page URL"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/website-seo-audit-api-01e2b263/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.kadec0.xyz](https://www.zero.xyz/host/api.kadec0.xyz/llms.txt)