# mcp-crosscheck

> mcp-crosscheck — cyanheads-mcp-crosscheck. Use this tool when you need to verify the accuracy of your server's advertised content against real-world client rendering. It solves problems of content inconsistencies and discrepancies by running actual MCP clients and diffing the rendered output. The mcp-crosscheck tool takes your server's content as input and outputs a comparison of the rendered results, providing a deterministic validation without relying on LLM calls or API keys.

Canonical page: https://skillsregistry.net/skills/cyanheads-mcp-crosscheck  
JSON: https://api.skillsregistry.net/v1/skills/cyanheads-mcp-crosscheck

## Description

Run real MCP clients against your server and diff what they render against what you advertise. Deterministic — no LLM calls, no API keys.

## Trust

- **Trust score (0–1):** 0.82
- **Verification tier:** verified
- **Last scanned:** 2026-09-28

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** container
- **Runtime environment:** vm
- **License:** Apache-2.0
- **Updated:** 2026-09-28

## Source

- **Source listing:** [GitHub](https://github.com/cyanheads/mcp-crosscheck)

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "cyanheads-mcp-crosscheck"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/cyanheads-mcp-crosscheck` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/cyanheads-mcp-crosscheck/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt