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MCP Session Bridge MCP Server

local only

MCP Session Bridge runs on your own machine — the client starts it, so there is no endpoint to ping. 32 installs a week from npm. Last commit 28 Sep 2026.

Drive a browser you are already signed into, through the free T3rnel Browser extension.

Installs per day peak 172 · avg 13 · -3% w/w
a month agotoday
32
Installs / week
npm · @t3ratech/mcp-session-bridge
2
Stars
0 open issues
28 Sep 2026
Last commit
6 releases in 90 days
Apache-2.0
License
JavaScript

What the code does

We read the source, 5 d ago · rules 995398eba69f

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

Package points at a different repository t3ratech/mcp-session-bridge
пакет @t3ratech/mcp-session-bridge ссылается на t3ratech/t3rnel-browser-plugin
Runs an external command src/cdp.js:281
    this.process = spawn(this.browserPath, args, { stdio: ["ignore", "ignore", "pipe"], env });

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

Three servers free · no card

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

run in your terminal
claude mcp add mcp-session-bridge -- npx -y @t3ratech/mcp-session-bridge
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "mcp-session-bridge": {
      "command": "npx",
      "args": [
        "-y",
        "@t3ratech/mcp-session-bridge"
      ]
    }
  }
}
~/.codex/config.toml
[mcp_servers.mcp-session-bridge]
command = "npx"
args = ["-y", "@t3ratech/mcp-session-bridge"]
.cursor/mcp.json
{
  "mcpServers": {
    "mcp-session-bridge": {
      "command": "npx",
      "args": [
        "-y",
        "@t3ratech/mcp-session-bridge"
      ]
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "mcp-session-bridge": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@t3ratech/mcp-session-bridge"
      ]
    }
  }
}

Optional settings from the registry entry, left out of the block above: T3RNEL_SESSION_MODE (auto (default) uses the extension when its relay socket exists and falls back to a standalone browser; extension forces the extension; standalone forces its own browser), T3RNEL_SESSION_HEADLESS (Set to 1 to run the standalone browser headless. Ignored in extension mode), T3RNEL_SESSION_TIMEOUT_MS (How long a single tool call may take before it fails rather than hanging the client).

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MCP Session Bridge — questions

Answers built from our own checks of this server.

Why is there no uptime for MCP Session Bridge?
MCP Session Bridge runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package @t3ratech/mcp-session-bridge was installed 32 times last week.
How do I connect MCP Session Bridge?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls @t3ratech/mcp-session-bridge straight from npm; nothing to host, nothing to sign up for.
How many people use MCP Session Bridge?
The npm package @t3ratech/mcp-session-bridge was installed 32 times in the last week. Week over week that is -3%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is MCP Session Bridge open source?
Yes — it is published under the Apache-2.0 licence, written in JavaScript and 2 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.