brawsr

Name: brawsr
Author: brawsr

by brawsrversion 0.2.0i★ –iRuns on your computer

Registry nameio.github.brawsr/brawsr

Install

Overview

Description from the maker (original English)

Browser sessions, checkpoints, rewind, fork, lineage, and lifecycle tools for brawsr.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Web & browsers
You need to fill in: BRAWSR_API_KEY

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: BRAWSR_API_KEY, BRAWSR_BASE_URL, BRAWSR_MCP_TIMEOUT_MS

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "brawsr": {
      "command": "npx",
      "args": [
        "-y",
        "@brawsr/mcp-server"
      ],
      "env": {
        "BRAWSR_API_KEY": "your-value",
        "BRAWSR_BASE_URL": "your-value",
        "BRAWSR_MCP_TIMEOUT_MS": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add brawsr --env BRAWSR_API_KEY=your-value --env BRAWSR_BASE_URL=your-value --env BRAWSR_MCP_TIMEOUT_MS=your-value -- npx -y @brawsr/mcp-server

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "brawsr": {
      "command": "npx",
      "args": [
        "-y",
        "@brawsr/mcp-server"
      ],
      "env": {
        "BRAWSR_API_KEY": "your-value",
        "BRAWSR_BASE_URL": "your-value",
        "BRAWSR_MCP_TIMEOUT_MS": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "brawsr": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@brawsr/mcp-server"
      ],
      "env": {
        "BRAWSR_API_KEY": "your-value",
        "BRAWSR_BASE_URL": "your-value",
        "BRAWSR_MCP_TIMEOUT_MS": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

BRAWSR_API_KEY secret required env
API key for the brawsr project used by this MCP server.
BRAWSR_BASE_URL env
Optional explicit API endpoint override for local development or another deployment.
BRAWSR_MCP_TIMEOUT_MS env
Optional default lifecycle wait in milliseconds, from 1 through 300000.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account brawsr, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Web & browsersi

More stars than 0% of the other 876 servers in this category
Published to the registry more recently than 29% of the other 876 servers in this category
Basic checks equal to or better than 100% of the other 876 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is brawsr safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: BRAWSR_API_KEY

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.2.0) reached the registry 3 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Browser Use, Chrome DevTools MCP, MCP Server Browser

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Browser Use

by browser-use

Lets AI do web tasks for you, such as filling forms, searching and extracting data, in the maker’s cloud browsers or on your computer.

Computer or cloud★ 120,087MITUpdated 16 days ago

Install

Chrome DevTools MCP

by ChromeDevTools

Lets AI use Chrome’s developer tools to inspect pages, find what makes them slow and spot errors. Made by the Chrome DevTools team.

Runs on your computer★ 54,821Apache-2.0Updated 15 days ago

Install

MCP Server Browser

by bytedance

MCP server for browser use access

Runs on your computer★ 39,550Apache-2.0Updated 14 months ago

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

brawsr MCP server

The authenticated local MCP bridge for brawsr browser sessions, checkpoints, rewind, and fork. It uses the official packaged @brawsr/sdk; it does not duplicate API models, poll orchestration, or browser/CDP behavior.

The v0.2 transport is local stdio and requires Node.js 22+.

Install and configure

MCP clients spawn the server locally. Pin the package version in client configuration so an MCP client restart cannot silently select a newer release:

"mcpServers": { "brawsr": { "command": "npx", "args": ["-y", "@brawsr/mcp-server@0.2.0"], "env": { "BRAWSR_API_KEY": "your-brawsr-api-key" } } } }

The npm package includes the official @brawsr/sdk; no second package install is required. BRAWSR_API_KEY is the only required environment variable. The production endpoint https://api.brawsr.io is built in.

For local development or another deployment, BRAWSR_BASE_URL may explicitly override that endpoint. BRAWSR_MCP_TIMEOUT_MS optionally changes the default bounded operation wait from 30 seconds and accepts an integer from 1 through 300000.

The API key is never a tool argument or result. Standard output is reserved for MCP protocol messages. Redacted lifecycle diagnostics use standard error. A direct shell launch uses the same executable:

BRAWSR_API_KEY=... npx -y @brawsr/mcp-server@0.2.0

Tools

brawsr_create_session, brawsr_list_sessions, brawsr_get_session, brawsr_update_session_label, brawsr_close_session
brawsr_close_sessions
brawsr_create_checkpoint, brawsr_get_checkpoint, brawsr_list_checkpoints, brawsr_delete_checkpoint
brawsr_list_rewindable_checkpoints, brawsr_list_session_activity, brawsr_get_session_lineage
brawsr_rewind, brawsr_fork
brawsr_get_operation, brawsr_wait_operation

Session creation accepts an optional display_label. The same label can be changed or cleared with one brawsr_update_session_label call. Session lists are newest-first, bounded, and may include retained closed or expired sessions. brawsr_get_session includes a CDP URL only while the session is attachable.

brawsr_list_checkpoints is capture history: it can include deleted captures for audit and dashboard views. Use brawsr_list_rewindable_checkpoints when choosing a valid rewind or fork target. Lineage returns one session, its optional parent fork edge, and one bounded page of direct children; callers can follow child session IDs to browse a nested fork tree. Pagination cursors are opaque and may be passed back unchanged.

Checkpoint, rewind, and fork are one high-level tool call. The packaged SDK hides ordinary 202 polling. Rewind returns as soon as its result is CDP-usable; the operation may finish bounded post-restore work in the background. A timeout stops only local waiting and returns the operation/idempotency recovery fields; server work continues.

Fork children are independent peer sessions, not implicit winners or losers. There is no browser-state merge and no automatic sibling cleanup. Rewind restores browser/client state, not remote website side effects, and makes old CDP/browser handles stale. Long-lived WSS/SSE/WebRTC streams may need application-level reconnection.

CDP URLs are sensitive structured outputs. The MCP server never returns the Authorization header. Use the ordinary SDK or a supported framework to attach; the MCP server does not proxy CDP.

Remote Streamable HTTP, OAuth, hosted multi-tenancy, legacy HTTP+SSE, and resumable MCP sessions are deferred beyond the local v0.2 stdio boundary.

Development

npm ci

npm run verify

Release archives are built reproducibly with the pinned Node 24 and npm 11.5.1 toolchain. CI also exercises the server and its real MCP client boundary on Node 22 and Node 24. npm hosts the executable package; the official MCP Registry hosts discovery metadata for io.github.brawsr/brawsr.

brawsr

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Web & browsersi

Common questions

Alternatives

Browser Use

Chrome DevTools MCP

MCP Server Browser

README from the maker

brawsr MCP server

Install and configure

Tools

Development