# PapaCasper – Check Robots & Sitemap

> PapaCasper – Check Robots & Sitemap is a paid API for AI agents from papacasper.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Fetches and analyzes the robots.txt and sitemap files for any given website URL, returning their contents and status.

## Facts

- Endpoint: POST https://papacasper.com/mcp/pay/check_robots_sitemap
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/papacasper-check-robots-sitemap-5f6d15f7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ZetjPefDmXBs3QNTosJkx

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 papacasper-check-robots-sitemap-5f6d15f7 -d '<json body>'
```

Example prompt: Can you check what robots.txt and sitemap setup https://example.com has — I want to know if it blocks crawlers and whether a sitemap is present?

## When to prefer this

Use this endpoint when you need a quick, hosted, pay-per-call check of a site's robots.txt and sitemap without setting up your own crawler infrastructure. Ideal for SEO audits, pre-scrape checks, and technical site health assessments where you only need robots/sitemap data rather than full page content.

## Known failure modes

- URL is unreachable or returns a non-200 status — robots.txt or sitemap may be reported as missing
- Malformed URL input may cause parsing errors
- Site may return a robots.txt that is unusually large or non-standard, leading to partial parse
- Sitemap URL referenced in robots.txt may itself be inaccessible
- Rate limiting or IP blocking by the target site may prevent fetching

## How this service works

A hosted MCP server exposing utility tools any AI agent can call over HTTP — page-to-markdown, SEO audits, robots/sitemap checks, and more.

## Output

Returns the parsed contents of the site's robots.txt (including disallow rules, user-agent directives, and sitemap references) and the status/contents of any linked sitemaps, derived from the origin of the provided URL.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "url"
 ],
 "properties": {
  "url": {
   "type": "string",
   "description": "Any URL on the site to check (origin is derived from it)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/papacasper-check-robots-sitemap-5f6d15f7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from papacasper.com](https://www.zero.xyz/host/papacasper.com/llms.txt)