How do I install the subtext mcp server?

Use a recorded configuration for your client, replace example credential values and paths, and verify the documented runtime. Restart or reconnect the client, then inspect the available tools.

What credentials does it need?

It reads `SUBTEXT_API_KEY`, `SUBTEXT_REGION`, `RELAY_URL`, `SIGHTMAP_URL`, `TRACE_URL`, `TUNNEL_ID` from the environment. Store these in your client's env block or a secrets manager — never commit them to a repository — and grant the narrowest scope that still covers your use case.

SSyncDev

Start a project

Subtext MCP Server

Subtext CLI — drive the Subtext MCP server from your terminal

Remote serverstreamable-httpGo

What is the Subtext MCP Server?

Subtext CLI — drive the Subtext MCP server from your terminal

What it actually does

A command-line interface for the Subtext MCP server. Open a browser, inspect the page, click things, take screenshots — from a shell or CI script.

The Subtext CLI opens a hosted browser session and lets you drive it: navigate, inspect the DOM, click, type, take screenshots, and close — all from a shell. Built for AI agents and CI pipelines, but works just as well for manual spot-checks.

More MCP options

Compare MCP servers by category, or browse hosted MCP servers if you prefer an endpoint over a local process.

Maintainer setup documentation.

Recorded tools

Check the linked publisher documentation and your connected client's tool list. Names and availability can vary with the server version and account permissions.

Tool	What it does
live	passthrough
comment	passthrough
doc	passthrough
artifact	passthrough
privacy	passthrough
review	passthrough
tunnel	native
sightmap	native
auth	native
version	native

How to install the Subtext MCP Server

{
  "mcpServers": {
    "subtext": {
      "command": "npx",
      "args": ["-y", "@subtextdev/subtext-cli"],
      "env": {
        "SUBTEXT_API_KEY": "your-value",
        "SUBTEXT_REGION": "your-value",
        "RELAY_URL": "your-value",
        "SIGHTMAP_URL": "your-value",
        "TRACE_URL": "your-value",
        "TUNNEL_ID": "your-value"
      }
    }
  }
}

Add to claude_desktop_config.json, then restart Claude Desktop.

Configuration

Variable	Description	Required
SUBTEXT_API_KEY	Credential the server authenticates with.	Yes
SUBTEXT_REGION	Configuration value read at startup.	Optional
RELAY_URL	Endpoint or connection string the server talks to.	Yes
SIGHTMAP_URL	Endpoint or connection string the server talks to.	Yes
TRACE_URL	Endpoint or connection string the server talks to.	Yes
TUNNEL_ID	Configuration value read at startup.	Optional

Example prompts to try

“Use Subtext to Namespace.”
“Use Subtext to live.”
“Use Subtext to comment.”

Frequently asked questions

Subtext CLI — drive the Subtext MCP server from your terminal Confirm the tools offered by your installed version in the connected client. Tool availability and permissions depend on the server and account configuration.

Alternatives to the Subtext MCP Server

Playwright

Official

Use Microsoft’s Playwright MCP server to navigate pages, inspect accessibility snapshots, fill forms and capture browser screenshots.

Browser AutomationTypeScript★ 21.0k

Puppeteer

Official

The original Chromium automation reference server — simple, screenshot-driven browser control.

Browser AutomationTypeScript★ 63.0k

New Relic MCP Server

A Model Context Protocol (MCP) server that provides seamless integration with New Relic's observability platform. Query metrics, manage alerts, monitor applications, and interact with your entire observability stack…

Monitoring & Observability

Ui-debugger-mcp

Autonomous UI debugging MCP server: an agent drives the browser/desktop, reports bugs + UX issues.

Developer Tools

Blueprint MCP

Blueprint MCP monorepo - MCP server and browser extensions

Browser AutomationTypeScript

Browser

A MCP client for browser-use

Browser AutomationPython