# crawl_sample

사이트의 sitemap·내부 링크에서 대표 페이지 표본을 뽑는다 (WCAG-EM 방식 층화 표집, robots.txt 존중).

Agent View of the PolicyLayer registry record for `crawl_sample`. HTML page: https://policylayer.com/tools/a11ychk-mcp/crawl-sample

## Facts

- Tool: `crawl_sample`
- Server: A11ychk (`@a11ychk/mcp`) — https://policylayer.com/tools/a11ychk-mcp.md
- Install: `npx -y @a11ychk/mcp`
- Homepage: https://github.com/IsaacEryn/a11ychk
- Risk category: Read (Low risk)
- Registry record: grade A, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "crawl_sample",
    "arguments": {}
  }
}
```

## Why crawl_sample is rated Low

Tool samples pages from sitemaps and internal links for accessibility testing; no data modification or execution occurs.

From the tool's own definition: "crawl_sample, sitemap, internal links, representative page sampling, respects robots.txt"

## Use case

AI agents call crawl_sample to retrieve information from A11ychk without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches A11ychk:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "crawl_sample": {}
  }
}
```

## Other tools on A11ychk (5)

- `get_fix_guide` — Read — https://policylayer.com/tools/a11ychk-mcp/get-fix-guide.md
- `kwcag_checkpoint` — Read — https://policylayer.com/tools/a11ychk-mcp/kwcag-checkpoint.md
- `scan_dir` — Read — https://policylayer.com/tools/a11ychk-mcp/scan-dir.md
- `scan_page` — Read — https://policylayer.com/tools/a11ychk-mcp/scan-page.md
- `scan_pages` — Read — https://policylayer.com/tools/a11ychk-mcp/scan-pages.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=a11ychk-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/a11ychk-mcp