Leapfrog MCP Server

Multi-session browser MCP for AI agents. 36 tools. 15 parallel sessions. Stealth. HUD. Self-improvement. Up to 10x fewer tokens. It runs locally over stdio via the published package.

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

VERIFIED ACTIVE

LAST COMMIT 2026-04-09 · ★ 5 · #213 OF 255 MAINTAINED BROWSER AUTOMATION · VERIFIED 2026-09-18

MIT · TypeScript servers · how we verify → /methodology

01 · Install Leapfrog

before you install - you'll need

Set LEAP_MAX_SESSIONS, LEAP_HUD, LEAP_AUTO_CONSENT before connecting. LEAP_TILE is optional or environment-specific per the README.

Claude Code

claude mcp add anthonybono21-cloud-leapfrog -- npx -y leapfrog-mcp

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "anthonybono21-cloud-leapfrog": {
      "command": "npx",
      "args": [
        "-y",
        "leapfrog-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

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 MIT - declared in the repository

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

registry namespace io.github.anthonybono21-cloud is GitHub-verified and matches the repo owner

03 · What Leapfrog can do

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

Latest releases

v0.7.3 · 2026-04-09

What's New since v0.6.1 · v0.7.x Highlights · Agent Eyes - Green SVG cursor + trailing ring tracks agent mouse movement in real-time. Scroll direction arrow on right edge. Zero overhead - listens to native DOM events.…

v0.6.1 · 2026-04-08

What's New in v0.6.1 · Leapfrog is a multi-session browser MCP server that gives AI agents up to 15 fully-isolated browsers running in parallel. · Highlights since v0.5.2 · 8 new feature groups: · Session identity…

v0.3.0 · 2026-04-02

What's New · 9 QA bugs fixed: session vanishing, zombie windows, HeadlessChrome leak, webdriver detection, crash recovery · Stealth · 14 evasion patches: Client Hints brands, WebGL spoofing, navigator.connection…

04 · Who maintains Leapfrog

leapfrog is maintained by anthonybono21-cloud. It's the only MCP server we track from this author; the repo dates to Apr 2026.

05 · Facts

repository: github.com/anthonybono21-cloud/leapfrog
category: browser automation - ranked #213 of 255 actively-maintained browser automation servers as of 2026-09-18.
registry: io.github.anthonybono21-cloud/leapfrog (active, first published 2026-04-09)
packages: npm:leapfrog-mcp

06 · Leapfrog FAQ

What is Leapfrog?

Multi-session browser MCP for AI agents. 36 tools. 15 parallel sessions. Stealth. HUD. Self-improvement. Up to 10x fewer tokens. It runs locally over stdio via the published package.

Is Leapfrog still maintained?

Yes - as of 2026-09-18, its last commit was 2026-04-09. We re-verify nightly.

How do I install Leapfrog?

Run `npx -y leapfrog-mcp`. The README documents 4 environment variables (LEAP_MAX_SESSIONS, LEAP_TILE, LEAP_HUD…) to set first. Set LEAP_MAX_SESSIONS, LEAP_HUD, LEAP_AUTO_CONSENT before connecting. LEAP_TILE is optional or environment-specific per the README. You can also paste the ready-made client config above.

Does Leapfrog 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 Leapfrog

Alternatives to Leapfrog

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

Pairs well with

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

More browser automation MCP servers · Domshell · Smolanalytics · Ascript MCP · Grasp - Code Architecture & Dependency Analysis · Webfetch (ashlrai)

More TypeScript MCP servers · Antics MCP · Truepane · Rftools · Sitecore Server · Server Chart · see all