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Installing LemonCrow into Antigravity

Support level: MCP config for Antigravity plus agy companion CLI support

Quick Install

make install

For project-local Antigravity artifacts:

bash scripts/install_antigravity.sh --workspace /path/to/workspace

What Gets Installed

Artifact Global install --workspace DIR install
MCP server config ~/.config/Antigravity/User/mcp.json <workspace>/.vscode/mcp.json
Host instructions Existing workspace AGENTS.md entrypoint same workspace entrypoint

Global installs also copy the LemonCrow Antigravity plugin metadata and shared skills for agy, so Antigravity sessions get stronger LemonCrow-first guidance instead of only a bare MCP registration.

The MCP config registers LemonCrow as a stdio server:

{
  "servers": {
    "lc": {
      "type": "stdio",
      "command": "lc mcp",
      "args": ["--host", "antigravity"]
    }
  }
}

Global installs also try:

antigravity --add-mcp '{"name":"lc","command":"lc mcp","args":["--host","antigravity"]}'

Verify

make verify

First Task

Open the workspace in Antigravity or start agy in the repo and ask it to use LemonCrow context before coding.

Expected Behavior

  • Antigravity can invoke LemonCrow MCP tools through the local LemonCrow MCP wrapper
  • agy can work against the same workspace and MCP surface
  • Workspace installs stay local to .vscode/mcp.json
  • Active context/retrieval/verify tools require LEMONCROW_DEV_MODE=1; otherwise some tools may be visible but return passive noop

Troubleshooting

Problem Fix
MCP tools not loading Reload Antigravity; check user mcp.json or workspace .vscode/mcp.json
antigravity not found Install the Antigravity app or ensure it is on PATH
agy not found Install/configure the companion CLI if you want terminal-first usage

Uninstall

bash scripts/uninstall_antigravity.sh
bash scripts/uninstall_antigravity.sh --workspace /path/to/workspace