MCP Proxy Server

Aggregates multiple MCP servers behind a single SSE endpoint using mcp-proxy.

Why: Some web UI clients (e.g., llama.cpp UI) only support /sse or /mcp endpoints — they cannot spawn stdio subprocesses. This proxy wraps stdio-based MCP servers behind http://localhost:8001/sse, making them accessible to such clients.

Usage

Install mcp-proxy (One time only).

uv tool install mcp-proxy

Run wrapper shell script.

./mcp-proxy.sh

All MCP servers are available via SSE at http://127.0.0.1:8001/servers/{actual mcp name}/sse.

Configuration

Edit mcp-proxy.env to change the port or config path:

PROXY_PORT=8001
MCP_PROXY_CONFIG=/path/to/mcp-proxy.json

Available servers in given json config file

Server	Command	Purpose
time	mcp-server-time --local-timezone=Asia/Karachi	Current time and date
fetch	mcp-server-fetch	Web page content fetching
ddg-search	duckduckgo-mcp-server	DuckDuckGo web search
browsermcp	npx @browsermcp/mcp@latest	Headless browser automation
tolaria	node ~/.local/share/tolaria/mcp-server/index.js	Markdown vault/note management
trafilatura	node ~/Development/trafilatura/build/index.js	Web content extraction
drawio	node ~/Development/GH/drawio-mcp/mcp-tool-server/src/index.js	Open diagrams in browser
drawio-app	node ~/Development/GH/drawio-mcp/mcp-app-server/src/index.js --stdio	Inline diagrams + shape search
dynamic-prompts	npx tsx ~/Development/mcp-prompts-server/server.ts	Dynamic prompt templates

Example

License

Apache 2.0

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Draw.io Integration

The draw.io MCP servers let you create and edit diagrams from chat. Two servers are available:

Server	Tools	How diagrams are viewed
drawio	open_drawio_xml, open_drawio_csv, open_drawio_mermaid	Opens in the browser via a locally hosted draw.io web editor
drawio-app	create_diagram, search_shapes	Renders inline in chat + searches 10,000+ shapes

Prerequisites

Install drawio app and tool mcp server. The drawio tool server opens diagrams in the browser. It needs the draw.io Warava UI running locally:

./start-drawio-server.sh

This serves the draw.io web editor at http://localhost:7001.

Configuration

Edit drawio.env to change the web editor port or webapp path:

DRAWIO_WEB_PORT=7001
DRAWIO_WEB_DIR=/path/to/drawio/src/main/webapp

How the drawio-mcp components connect

              draw.io web editor (http-server, port 7001)
                    ↑ 
              opens diagrams in browser
              drawio     (tool server) --→ mcp-proxy --→ SSE client
              drawio-app (app server)  --→ mcp-proxy --→ SSE client (inline rendering)

Both draw.io MCP servers are registered in mcp-proxy.json and served through the proxy alongside all other servers. The drawio-app entry uses --stdio to communicate over stdio (required by mcp-proxy).