Diagrams MCP Server

Local-first MCP server for PlantUML and Mermaid diagrams with drift detection.

What does this entry provide?

Diagrams MCP Server is an MCP server entry in ChatHome Skills, sourced from Official MCP Registry and scored 76/100. As a Model Context Protocol server, it exposes tools that MCP-compatible LLM clients such as Claude, Cursor, and Copilot can call directly, extending an agent's reach beyond its built-in capabilities. ChatHome Skills discovered this entry through its daily ingest of official registries and GitHub discovery queries, and re-verifies repository facts, freshness signals, and install metadata on every run. The quality score weighs official-registry presence, a working install command, license clarity, GitHub star trajectory, and repository freshness — the full formula is on the Sources page. The install command above is ready to copy. Review the last-pushed date and repository status before adding Diagrams MCP Server to a production agent workflow; the snapshot facts below are point-in-time values from the most recent ingest.

Snapshot facts

Source: Official MCP Registry
Quality: 76/100
Install method: npm
Repo: mohammad-emad-dev/diagrams-mcp-server
Repo updated: Oct 19, 2026

Install command

npx -y diagrams-mcp-server@0.11.0

Install method: npm

Review the upstream source before running this command.

GitHub project

Quality

Repo stars

Repo updated

Oct 19, 2026

How is this score calculated?

Weighted across six dimensions, scored 0-100.
Provenance (25): listed in an official or curated registry.
Installability (25): a runnable install command beats a declared transport, which beats a source checkout.
Maintenance (20): recency of the last push; archived entries score zero here.
Adoption (20): repository stars on a log curve.

MCP manifest

{
  "_meta": {
    "io.modelcontextprotocol.registry/official": {
      "status": "active",
      "isLatest": true,
      "updatedAt": "2026-10-19T12:33:32.119567Z",
      "publishedAt": "2026-10-19T12:33:32.119567Z",
      "statusChangedAt": "2026-10-19T12:33:32.119567Z"
    }
  },
  "server": {
    "name": "io.github.mohammad-emad-dev/diagrams-mcp-server",
    "title": "Diagrams MCP Server",
    "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
    "version": "0.11.0",
    "packages": [
      {
        "version": "0.11.0",
        "transport": {
          "type": "stdio"
        },
        "identifier": "diagrams-mcp-server",
        "runtimeHint": "npx",
        "registryType": "npm",
        "registryBaseUrl": "https://registry.npmjs.org",
        "environmentVariables": [
          {
            "name": "PROJECT_ROOT",
            "description": "Project root to attach to (defaults to the working directory)."
          },
          {
            "name": "DIAGRAMS_DIR",
            "default": "diagrams",
            "description": "Diagrams directory, relative to PROJECT_ROOT unless absolute (default: diagrams)."
          },
          {
            "name": "PLANTUML_SERVER_URL",
            "description": "Override for the opt-in remote PlantUML fallback."
          },
          {
            "name": "ALLOW_REMOTE_PLANTUML",
            "description": "Set to true to allow the remote PlantUML fallback when no local CLI is installed."
          },
          {
            "name": "DISABLE_REMOTE_PLANTUML",
            "description": "Set to true to always disable the remote PlantUML fallback."
          }
        ]
      }
    ],
    "repository": {
      "url": "https://github.com/mohammad-emad-dev/diagrams-mcp-server",
      "source": "github"
    },
    "websiteUrl": "https://github.com/mohammad-emad-dev/diagrams-mcp-server",
    "description": "Local-first MCP server for PlantUML and Mermaid diagrams with drift detection."
  }
}

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