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Mobster adds its MCP server to Windsurf’s own config. Windsurf then lists Mobster’s tools (verify_start, screen, tap, run_tests and the rest of the MCP server).

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Add it

It prints what it changed:
Add --dry-run to see the change first and write nothing. Run the command again and nothing changes. mobster mcp install --all sets up every agent it finds, Windsurf included.

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What it writes

The entry goes in ~/.codeium/windsurf/mcp_config.json. Windsurf became Devin Desktop on 2 Jun 2026. Its docs name ~/.config/devin/mcp_config.json, its FAQ keeps the old path, so Mobster writes both when their folders exist.
Mobster keeps the rest of the file as it is, with a copy of the old one beside it (.mobster-backup). It writes the full path to mobster because apps opened from the Dock don’t see your shell’s PATH, and it never writes a key. Windsurf has no project-level MCP file, so --project skips it.

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Check it

The doctor starts the server the way Windsurf does, lists its tools and calls status. Then it checks that the Windsurf entry runs a mobster that exists, and says which command to run if it doesn’t. Restart Windsurf, then open Cascade’s MCP panel.

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Add the skill

This copies the mobster skill into ~/.codeium/windsurf/skills, so the agent also knows the verify loop and the rules for a real iPhone: ask before anything that sends, buys, posts or deletes, and never enter a passcode.

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Take it out

This removes the mobster entry and leaves your other servers alone. Windsurf’s own reference for the file is at https://docs.devin.ai/desktop/cascade/mcp.