# Mermaid MCP Server

> Use this tool when you need to validate and ensure the accuracy of Mermaid diagram code, enabling the creation of syntactically correct flowcharts, sequence diagrams, and other visualizations. It solves problems related to incorrect or malformed Mermaid code by providing access to official syntax documentation and validation capabilities. The tool takes Mermaid code as input and outputs validated code, making it ideal for use cases where precise diagram rendering is crucial.

Canonical page: https://skillsregistry.net/skills/ziangziangziang-mcp-mermaid  
JSON: https://api.skillsregistry.net/v1/skills/ziangziangziang-mcp-mermaid

## Description

Enables agents to search official Mermaid diagram syntax documentation and validate Mermaid diagram code before presenting it to users, ensuring syntactically correct flowcharts, sequence diagrams, class diagrams, and other Mermaid visualizations.

## Trust

- **Trust score (0–1):** 0.83
- **Verification tier:** verified
- **Last scanned:** 2026-09-19

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** search
- **Updated:** 2026-09-19

## Source

- **Source listing:** [Glama](https://glama.ai/mcp/servers/gj7esji3qf)
- **Repository:** <https://github.com/ziangziangziang/mcp-mermaid>

## 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": "ziangziangziang-mcp-mermaid"
    }
  }
}
```

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

---
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