# llms.txt Checker & Generator (Pro Pack)

> llms.txt Checker & Generator (Pro Pack) is a paid API for AI agents from llms.penguindriver.com, paid per call via x402, $0.3/call, status unknown (last checked 2026-10-27).

Checks a website's llms.txt, Markdown pages, robots.txt AI crawler settings, and sitemap, then auto-generates a draft llms.txt file.

## Facts

- Endpoint: GET https://llms.penguindriver.com/api/pro/pack?utm_source=zero.xyz
- Price: $0.3/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-27
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/llms-txt-checker-generator-pro-pack-2ddeb4d7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_roASQwRNYJcmtXhSN-CT8

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 llms-txt-checker-generator-pro-pack-2ddeb4d7
```

Example prompt: Can you check whether example.com has a proper llms.txt set up, see how its robots.txt handles AI crawlers, and generate a draft llms.txt I can use?

## When to prefer this

Choose this endpoint when you need a comprehensive, all-in-one audit of a website's LLM accessibility configuration, including llms.txt presence, robots.txt AI rules, sitemap inspection, and auto-generation of a starter llms.txt. It combines multiple checks into a single call (the 'pro pack'), saving the overhead of running separate checks for each signal.

## Known failure modes

- Website URL not reachable or returns non-200 status — report may be incomplete
- No llms.txt or robots.txt found on the domain — report notes absence rather than error
- Sitemap missing or malformed — sitemap section of report may be empty
- Input URL missing or malformed — request fails with validation error
- Timeout fetching large sitemaps or many Markdown pages — partial results returned

## How this service works

檢查網站的 llms.txt、Markdown 頁面、robots.txt AI 爬蟲設定與 sitemap，並自動產生 llms.txt 草稿。

## Output

Returns a comprehensive report covering the site's existing llms.txt content (if any), AI crawler rules in robots.txt, sitemap structure, available Markdown pages, and an auto-generated draft llms.txt ready to publish.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "object"
  }
 }
}
```

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/llms-txt-checker-generator-pro-pack-2ddeb4d7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from llms.penguindriver.com](https://www.zero.xyz/host/llms.penguindriver.com/llms.txt)