E2e Runner MCP Server

The AI-native E2E test runner that writes, runs, and debugs tests for you. E2E Runner lets you test your web app without writing test code. Tests are plain JSON - and you don't even have to write that yourself: just ask Claude Code. It runs locally over stdio via the published package.

People connecting browser automation tools to Claude, Cursor, VS Code, or another MCP client. The project is written in JavaScript.

VERIFIED ACTIVE

LAST COMMIT 2026-06-08 · ★ 3 · #139 OF 196 MAINTAINED BROWSER AUTOMATION · VERIFIED 2026-08-25

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

01 · Install E2e Runner

before you install - you'll need

CHROME_POOL_URL

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

Claude Code

claude mcp add fastslack-mtw-e2e-runner -- npx -y @matware/e2e-runner

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "fastslack-mtw-e2e-runner": {
      "command": "npx",
      "args": [
        "-y",
        "@matware/e2e-runner"
      ]
    }
  }
}

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 · container (OCI image) - can be sandboxed away from your filesystem

license Apache-2.0 - declared in the repository

npm package @matware/e2e-runner - the @matware scope differs from the repo owner (fastslack); confirm it's the project's official package

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

03 · What E2e Runner can do

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

Latest releases

v1.5.0 · 2026-06-05

Added · New / enhanced actions (lighter tests, fewer evaluate blocks): · - select_combobox - open a MUI Autocomplete/Select, optionally filter, and click the option matching text, with fallback across [role=option] /…

v1.3.0 · 2026-03-12

## What's New · ### Multi-Pool & Routing · - Multi-pool support with least-pressure routing and automatic failover · - Pool-aware dashboard visualization · ### Learning System · - Stability learning system: flaky test…

04 · Who maintains E2e Runner

e2e-runner is maintained by fastslack. It's the only MCP server we track from this author; the repo dates to Feb 2026.

05 · Facts

repository: github.com/fastslack/mtw-e2e-runner
category: browser automation - ranked #139 of 196 actively-maintained browser automation servers as of 2026-08-25.
release cadence: 1 release in the last 90 days (latest 2026-06-05)
registry: io.github.fastslack/e2e-runner (active, first published 2026-02-09 · 3 versions)
packages: npm:@matware/e2e-runner · oci:docker.io/fastslack/e2e-runner-mcp:1.3.0

06 · E2e Runner FAQ

What is E2e Runner?

Is E2e Runner still maintained?

Yes - as of 2026-08-25, its last commit was 2026-06-08 and it shipped 1 release in the last 90 days. We re-verify nightly.

How do I install E2e Runner?

Run `npx -y @matware/e2e-runner`. The README documents one environment variable (CHROME_POOL_URL) to set first. You can also paste the ready-made client config above.

Does E2e Runner 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 E2e Runner

Alternatives to E2e Runner

Maintained browser automation servers if E2e Runner isn't the fit.

Pairs well with

Servers that cover what E2e Runner doesn't - only shown when the pairing reason fits the companion.

More browser automation MCP servers · Feedthrough · Scout · Flyto Core · Expo Android MCP · Chrome Bridge

More JavaScript MCP servers · MaxStat MCP · Figranium MCP · Filekiwi MCP Server · Flagrix · see all