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apex-browser-mcp

by apexradius
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apex-browser-mcp

Local multi-session browser MCP for real Chrome, Chromium, WebKit, and real Safari, plus attach to an already-running Chrome session without moving the work into a cloud browser.

Release posture: npm package @apexradius/browser-mcp, version 1.0.0 from package.json.

Choose your path

You are...

Start here

Then

Running the daemon or stdio server

docs/start-here.md

Quick start below

Auditing browser routing or attach behavior

docs/architecture.md

src/manager.js

Reviewing the MCP tool surface

src/server.js

src/index.js

Related MCP server: paparazzi

Architecture

flowchart TD
  U[AI operator] --> C[MCP client]
  C --> T[stdio or HTTP transport]
  T --> S[MCP server]
  S --> M[BrowserManager]
  M --> P[SessionPool]
  M --> F[SafariLane]
  P --> B[Chrome Chromium WebKit sessions]
  P --> D[Attached Chrome via CDP]
  F --> R[Real Safari.app session]

Request flow

flowchart TD
  A[Operator opens or attaches a browser session] --> B[Selected MCP tool]
  B --> C{New session or attach?}
  C -- new --> D[BrowserManager creates session]
  C -- attach --> E[Connect to CDP endpoint]
  D --> F[Session stored in pool]
  E --> F
  F --> G[Subsequent navigate snapshot click type evaluate tools]
  G --> H[Return text or screenshot path to MCP client]

Quick start

  1. Install dependencies and browser engines.

npm install
npx playwright install chromium webkit

  1. Start the shared HTTP daemon.

APEX_BROWSER_TRANSPORT=http node src/index.js

  1. Register it in your MCP client.

{
  "mcpServers": {
    "apex-browser": {
      "type": "http",
      "url": "http://127.0.0.1:3010/mcp"
    }
  }
}

Available tools

Tool group

Tools

Purpose

Session lifecycle

browser_new_session, browser_attach, browser_list_sessions, browser_close_session

Open, adopt, inspect, and close sessions

Navigation and state

browser_navigate, browser_snapshot

Load pages and capture indexed interactive refs

Interaction

browser_click, browser_type, browser_evaluate

Drive page interactions and execute page JS

Artifacts

browser_screenshot

Save a PNG and return its path

Runtime proof

Claim

Proof

Package entry point is stable

"apex-browser-mcp": "src/index.js" in package.json

HTTP and stdio transports are both first-class

Transport selection in src/index.js

Session routing is engine-aware

BrowserManager in src/manager.js

Tool registration is centralized

buildServer() in src/server.js

Repo map

Path

Purpose

src/index.js

Process entry point, transport selection, HTTP daemon

src/server.js

MCP tool registration and request handlers

src/manager.js

Unified routing across SessionPool and SafariLane

src/pool.js

Multi-session Playwright and CDP attach backend

src/safari.js

Real Safari.app lane

docs/start-here.md

Setup, env, validation, common failures

docs/architecture.md

Component map and runtime lifecycle

Validation

Check

Command

Core regression suite

npm test

Attached-Chrome concurrency

node test/attach-concurrent.js

README/docs links stay local

rg '\\]\\(([^)]+\\.md)\\)' README.md docs/

License

MIT

Install Server
A
license - permissive license
B
quality
B
maintenance

How are these scores calculated?

Maintenance

–Maintainers
–Response time
–Release cycle
–Releases (12mo)
Commit activity

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Tools

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