# MCP Grammar Tools

> Use this tool when you need to validate and test grammars in Lark format, solving issues with syntax errors and inconsistencies. It provides grammar validation, batch test execution, and syntax documentation as output, taking in llguidance grammars as input. Ideal for use cases where grammar accuracy and reliability are crucial, such as natural language processing and compiler development.

Canonical page: https://skillsregistry.net/skills/guidance-ai-guidance-lark-mcp  
JSON: https://api.skillsregistry.net/v1/skills/guidance-ai-guidance-lark-mcp

## Description

Validates and tests llguidance grammars (Lark format), providing grammar validation, batch test execution, and syntax documentation.

## Trust

- **Trust score (0–1):** 0.60
- **Verification tier:** unverified

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** file-system
- **Updated:** 2026-05-27

## Source

- **Source listing:** [Glama](https://glama.ai/mcp/servers/z290wo5ury)
- **Repository:** <https://github.com/guidance-ai/guidance-lark-mcp>

## 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": "guidance-ai-guidance-lark-mcp"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/guidance-ai-guidance-lark-mcp` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/guidance-ai-guidance-lark-mcp/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