Diagrams MCP

Generate cloud architecture diagrams, flowcharts, and sequence diagrams.

People connecting this server to Claude, Cursor, VS Code, or another MCP client. The project is written in Python.

VERIFIED ACTIVE

LAST COMMIT 2026-06-20 · ★ 3 · #487 OF 848 MAINTAINED OTHER · VERIFIED 2026-08-25

Python servers · how we verify → /methodology

01 · Install Diagrams MCP

before you install - you'll need

Set RENDERER_HOST, FASTMCP_TRANSPORT, FASTMCP_HOST, FASTMCP_PORT, DIAGRAMS_RENDERER_MODE, DIAGRAMS_RENDERER_URL before connecting.

Claude Code

claude mcp add byteoverdev-diagrams-mcp --transport http https://diagrams-mcp-production.up.railway.app/mcp

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "byteoverdev-diagrams-mcp": {
      "url": "https://diagrams-mcp-production.up.railway.app/mcp"
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

https://diagrams-mcp-production.up.railway.app/mcp

transport: streamable-http

endpoint alive - responded to MCP initialize · probed 2026-08-25

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions · remote - your agent's requests go to diagrams-mcp-production.up.railway.app

endpoint auth accepted our unauthenticated MCP initialize - no credentials needed to connect

license no standard license detected - usage rights unclear; check the repo before commercial use

pypi package diagrams-mcp-server - check the name against the project README before installing (PyPI has no namespace ownership)

registry registry publisher io.github.mskry is not the repo owner (byteoverdev) - the registry entry was published by someone else

03 · Who maintains Diagrams MCP

Diagrams MCP is maintained by byteoverdev. We track 2 MCP servers from byteoverdev - 2 actively maintained, 6 combined GitHub stars, oldest repo from Apr 2026. Full record: all servers from byteoverdev.

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04 · Facts

repository: github.com/byteoverdev/diagrams-mcp
category: other - ranked #487 of 848 actively-maintained other servers as of 2026-08-25.
registry: io.github.mskry/diagrams-mcp-server (active, first published 2026-04-11)
packages: pypi:diagrams-mcp-server

05 · Diagrams MCP FAQ

What is Diagrams MCP?

Generate cloud architecture diagrams, flowcharts, and sequence diagrams.

Is Diagrams MCP still maintained?

Yes - as of 2026-08-25, its last commit was 2026-06-20. We re-verify nightly.

How do I install Diagrams MCP?

Run `uvx diagrams-mcp-server`. The README documents 6 environment variables (RENDERER_HOST, FASTMCP_TRANSPORT, FASTMCP_HOST…) to set first. Set RENDERER_HOST, FASTMCP_TRANSPORT, FASTMCP_HOST, FASTMCP_PORT, DIAGRAMS_RENDERER_MODE, DIAGRAMS_RENDERER_URL before connecting. You can also paste the ready-made client config above.

Does Diagrams MCP require authentication?

No - the endpoint accepted our unauthenticated MCP initialize when probed on 2026-08-25; you can connect without credentials.

06 · Alternatives to Diagrams MCP

Alternatives to Diagrams MCP

Maintained other servers if Diagrams MCP isn't the fit.

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