Arc browser MCP for macOS: agent window, snapshots, DevTools input, guardrails
To add Arc Control (macOS) to Claude, run the install command below or copy the ready-made config for Claude Code, Claude Desktop, Cursor and VS Code further down. Restart your client after adding it and its tools show up in your next conversation. It declares 16 environment variables, listed below.
Install
npx -y arc-control-mcp@0.4.0Environment variables
ARC_MCP_LABELSet in your MCP configARC_MCP_SPACESet in your MCP configARC_MCP_STATE_DIRSet in your MCP configARC_MCP_WINDOWSet in your MCP configARC_MCP_WINDOW_PLACEMENTSet in your MCP configARC_MCP_IDLE_MSSet in your MCP configARC_MCP_IDLE_WAIT_MSSet in your MCP configARC_MCP_ARC_DATA_DIRSet in your MCP configARC_MCP_ALLOW_HISTORYSet in your MCP configARC_MCP_CDPSet in your MCP configARC_MCP_CDP_PORTSet in your MCP configARC_MCP_ALLOWED_ORIGINSSet in your MCP configARC_MCP_BLOCKED_ORIGINSSet in your MCP configARC_MCP_BLOCK_READSSet in your MCP configARC_MCP_READ_ONLYSet in your MCP configARC_MCP_AUDIT_LOGSet in your MCP configSet only if the maker requires them; this listing does not flag any of them as required.
Install with your client
claude mcp add arc-control-macos --env ARC_MCP_LABEL=<YOUR_ARC_MCP_LABEL> --env ARC_MCP_SPACE=<YOUR_ARC_MCP_SPACE> --env ARC_MCP_STATE_DIR=<YOUR_ARC_MCP_STATE_DIR> --env ARC_MCP_WINDOW=<YOUR_ARC_MCP_WINDOW> --env ARC_MCP_WINDOW_PLACEMENT=<YOUR_ARC_MCP_WINDOW_PLACEMENT> --env ARC_MCP_IDLE_MS=<YOUR_ARC_MCP_IDLE_MS> --env ARC_MCP_IDLE_WAIT_MS=<YOUR_ARC_MCP_IDLE_WAIT_MS> --env ARC_MCP_ARC_DATA_DIR=<YOUR_ARC_MCP_ARC_DATA_DIR> --env ARC_MCP_ALLOW_HISTORY=<YOUR_ARC_MCP_ALLOW_HISTORY> --env ARC_MCP_CDP=<YOUR_ARC_MCP_CDP> --env ARC_MCP_CDP_PORT=<YOUR_ARC_MCP_CDP_PORT> --env ARC_MCP_ALLOWED_ORIGINS=<YOUR_ARC_MCP_ALLOWED_ORIGINS> --env ARC_MCP_BLOCKED_ORIGINS=<YOUR_ARC_MCP_BLOCKED_ORIGINS> --env ARC_MCP_BLOCK_READS=<YOUR_ARC_MCP_BLOCK_READS> --env ARC_MCP_READ_ONLY=<YOUR_ARC_MCP_READ_ONLY> --env ARC_MCP_AUDIT_LOG=<YOUR_ARC_MCP_AUDIT_LOG> -- npx -y arc-control-mcp@0.4.0
Run this in a terminal to add the server to Claude Code.
What this does
Arc Control (macOS) exposes a set of tools to Claude over the Model Context Protocol. After you add it to claude_desktop_config.json (snippet above) and restart Claude Desktop, those tools become callable inside any conversation.
Requirements
This server declares the following environment variables. Set only the ones the maker requires for your setup; this listing does not flag any of them as required:
ARC_MCP_LABEL ARC_MCP_SPACE ARC_MCP_STATE_DIR ARC_MCP_WINDOW ARC_MCP_WINDOW_PLACEMENT ARC_MCP_IDLE_MS ARC_MCP_IDLE_WAIT_MS ARC_MCP_ARC_DATA_DIR ARC_MCP_ALLOW_HISTORY ARC_MCP_CDP ARC_MCP_CDP_PORT ARC_MCP_ALLOWED_ORIGINS ARC_MCP_BLOCKED_ORIGINS ARC_MCP_BLOCK_READS ARC_MCP_READ_ONLY ARC_MCP_AUDIT_LOG
Set these via the env object in your MCP config (see claude_desktop_config.json snippet above).
Frequently asked questions
How do I install Arc Control (macOS)?
Run the Claude Code command in the install section to add Arc Control (macOS) to Claude Code, or copy the ready-made config for your client from the install section on this page. Restart your client afterwards and the tools appear in your next conversation.
Which clients work with Arc Control (macOS)?
This page carries setup and config for Claude Code, Claude Desktop, Cursor and VS Code. Any other MCP client that accepts a standard server config can connect to Arc Control (macOS) as well.
Does Arc Control (macOS) need an API key?
This listing does not flag an API key as required. The server can use these environment variables: ARC_MCP_LABEL, ARC_MCP_SPACE, ARC_MCP_STATE_DIR, ARC_MCP_WINDOW, ARC_MCP_WINDOW_PLACEMENT, ARC_MCP_IDLE_MS, ARC_MCP_IDLE_WAIT_MS, ARC_MCP_ARC_DATA_DIR, ARC_MCP_ALLOW_HISTORY, ARC_MCP_CDP, ARC_MCP_CDP_PORT, ARC_MCP_ALLOWED_ORIGINS, ARC_MCP_BLOCKED_ORIGINS, ARC_MCP_BLOCK_READS, ARC_MCP_READ_ONLY, ARC_MCP_AUDIT_LOG; the maker's docs say which of them your setup needs. They go in the env block of your MCP config.
Imported from the Official MCP Registry. The details above come from the registry entry; the maker can claim this listing to correct them, add docs, and see its traffic.
Is this your MCP server?
Claim this listing to see its traffic, fix details yourself, and skip the review queue on future updates.
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