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Droid is Factory’s terminal coding agent. It exposes an mcp subcommand for managing MCP servers.

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Install

droid mcp add sharc --env SHARC_API_KEY=sk_mcp_... npx -y @sharc-code/mcp@latest
Droid takes the launch command directly as positional arguments — there’s no -- separator like Claude Code or Codex.
Verify: 
droid mcp list

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How it works

The command above creates a stdio MCP server entry (Droid’s default). The --env flag is repeatable for multiple environment variables. Droid spawns npx -y @sharc-code/mcp@latest whenever it starts a session, with SHARC_API_KEY set in the child process’s environment.

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Updating the API key

droid mcp remove sharc
droid mcp add sharc --env SHARC_API_KEY=sk_mcp_NEW... npx -y @sharc-code/mcp@latest

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Verify

Ask Droid: 
> List the MCP tools you have available
You should see seven SHARC tools (index_codebase, search_code, clear_index, get_indexing_status, start_watch, stop_watch, get_watch_status).

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Troubleshooting

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Server not connecting

  • Confirm npx is on your PATH: npx --version
  • Re-run droid mcp list to see the configured command
  • Check that SHARC_API_KEY was set correctly when adding the server