Mat MCP Server

Headless MCP server for Eclipse MAT using direct java -jar org.eclipse.equinox.launcher_.jar execution. It runs locally over stdio via the published package.

People who work with Mat and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in TypeScript.

VERIFIED ACTIVE

LAST COMMIT 2026-03-19 · ★ 25 · #187 OF 255 MAINTAINED BROWSER AUTOMATION · VERIFIED 2026-09-18

Apache-2.0 · TypeScript servers · how we verify → /methodology

01 · Install Mat

before you install - you'll need

MAT_HOME

Environment variables documented in the project's README - it lists which are required and which have defaults.

Claude Code

claude mcp add codelipenghui-mcp-mat -- npx -y mcp-mat

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "codelipenghui-mcp-mat": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-mat"
      ]
    }
  }
}

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

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

license Apache-2.0 - declared in the repository

npm package mcp-mat - unscoped; check the name against the project README before installing

registry namespace io.github.codelipenghui is GitHub-verified and matches the repo owner

03 · What Mat can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

Latest releases

v0.1.0 · 2026-03-19

An MCP server that brings Eclipse Memory Analyzer (MAT) to AI-powered coding assistants. Analyze Java heap dumps through natural conversation - no Eclipse GUI needed. · What's included · 6 MCP tools for heap dump…

04 · Who maintains Mat

mcp-mat is maintained by codelipenghui. It's the only MCP server we track from this author; the repo dates to Mar 2026.

05 · Facts

repository: github.com/codelipenghui/mcp-mat
category: browser automation - ranked #187 of 255 actively-maintained browser automation servers as of 2026-09-18.
registry: io.github.codelipenghui/mcp-mat (active, first published 2026-03-19)
packages: npm:mcp-mat

06 · Mat FAQ

What is Mat?

Headless MCP server for Eclipse MAT using direct java -jar org.eclipse.equinox.launcher_.jar execution. It runs locally over stdio via the published package.

Is Mat still maintained?

Yes - as of 2026-09-18, its last commit was 2026-03-19. We re-verify nightly.

How do I install Mat?

Run `npx -y mcp-mat`. The README documents one environment variable (MAT_HOME) to set first. You can also paste the ready-made client config above.

Does Mat run locally?

Yes - it's a stdio server: it runs on your machine (via npx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Mat

Alternatives to Mat

Maintained browser automation servers if Mat isn't the fit.

Pairs well with

Servers that cover what Mat doesn't - only shown when the pairing reason fits the companion.

More browser automation MCP servers · CometChat Docs · Crawlio Browser · Peek · Pagebolt · Chromium Bridge

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