A
licenseB
qualityB
maintenanceA Model Context Protocol (MCP) server that converts Mermaid diagrams to PNG images.
1
289 npm
234
MIT
Mermaid-Grammer-Inspector
by heyq02
This MCP server validates Mermaid diagram syntax and checks grammar correctness.
Validate Mermaid diagrams: Check if text contains valid Mermaid diagram code using the
checktoolError detection: Returns detailed error messages when syntax issues are detected, or an empty string when the diagram is valid
Multiple installation methods: Supports npm, yarn, pnpm, bun, or deno
Flexible deployment: Available in both stdio (local) and HTTP/SSE (remote) configurations for integration with MCP clients like Cursor
Validates Mermaid diagram syntax and provides comprehensive grammar checking capabilities for Mermaid diagrams.
Click on "Deploy Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type
@followed by the MCP server name and your instructions, e.g., "@Mermaid-Grammer-Inspector check this mermaid syntax for errors: graph TD; A-->B; B-->C"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
Mermaid Grammer Inspector
A Model Context Protocol (MCP) server for validating Mermaid diagram syntax and providing comprehensive grammar checking capabilities
Usage
Install the package:
# npm
npm installg @bjmhe/mermaid-grammer-inspector-mcp
# yarn
yarn addg @bjmhe/mermaid-grammer-inspector-mcp
# pnpm
pnpm addg @bjmhe/mermaid-grammer-inspector-mcp
# bun
bun installg @bjmhe/mermaid-grammer-inspector-mcp
# deno
deno installg npm:@bjmhe/mermaid-grammer-inspector-mcp
# vp
vp installg @bjmhe/mermaid-grammer-inspector-mcpNPX Cursor Config
{
"mcpServers": {
"mermaid-grammer-inspector": {
"command": "npx",
"type": "stdio",
"transportType": "stdio",
"args": ["-y", "mermaid-grammer-inspector"]
}
}
}Http Cursor Config
start the service locally
mermaid-grammer-inspector --http --port=4000set the config
{
"mcpServers": {
"mermaid-grammer-inspector": {
"url": "http://0.0.0.0:4000/sse",
"type": "sse",
"transportType": "sse"
}
}
}Related MCP server: mcp-mermaid-validator
License
Published under the MIT license. Made by community 💛
🤖 auto updated with automd
Available Tools
1 toolcheckA
Check if the text is a valid mermaid diagram. Returns an empty string if valid, otherwise returns the error message.
Inputs: text (required).
Tool Schema Changelog
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
Loading tool schema changelog…
TDQS
A3.8/5.0
Scored across 1 tool
Disambiguation5/5
Only one tool exists, so there is no ambiguity whatsoever.
Naming Consistency5/5
With a single tool, naming is trivially consistent.
Tool Count3/5
A single tool for validation is borderline; it feels thin for a server named 'Inspector' but could be acceptable for a focused utility.
Completeness2/5
Only validation is provided; lacking features like parsing, rendering, or transformation for a diagram inspector.
Maintenance
ActivityNo data
ResponsivenessSyncing
Related MCP Connectors
Render, verify, describe, and safely edit Mermaid diagrams through MCP.
Validate Mermaid syntax and get error details your coding agent can use to correct a diagram. Check the source again before adding it to your documentation. Validation works without saving a diagram. Render SVG, PNG, or PDF, save diagrams privately, and publish selected snapshots. Your existing agent writes and corrects the source; MermaidDesk checks and renders it. Validation checks syntax, not whether a diagram accurately describes a system. Connect through MCP with Streamable HTTP and a scoped bearer API key. Enable MERMAID_RENDER for validation and rendering. A REST API is also available. MCP setup: https://www.mermaiddesk.com/developers/mcp REST API guide: https://www.mermaiddesk.com/developers/api
A comprehensive Model Context Protocol (MCP) server that enables AI assistants to interact with yo…
MCP Spec Compliance MCP — audits any MCP server.json against the official Model Context Protocol
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