Install in Antigravity

Install in Antigravity

slipstream's MCP server runs in Antigravity by Google as a registered MCP tool provider. You get the full sp_* toolset and the local dashboard. The Claude Code plugin surface (skills, slash commands, hooks, statusline) is not available here; the dashboard browser tab is the universal UI.

Antigravity is in early preview as of June 2026. Config paths and the MCP settings UI are still moving. If the paths below do not match your build, open the in-app command palette and search for "MCP" to find the current location.

Requirements

• Antigravity early-preview build with MCP enabled.
• Node 20 or newer on your PATH.
• A local clone of slipstream, built once.

Check Node from the Antigravity integrated terminal:

node --version

Build the server once

git clone https://github.com/sarmakska/slipstream
cd slipstream
npm install
npm run build

This produces dist/mcp/index.js. Note the absolute path; you will paste it into the Antigravity config.

Locate the MCP config file

Antigravity reads MCP servers from a per-user JSON file.

• macOS: ~/Library/Application Support/Antigravity/mcp.json
• Linux: ~/.config/Antigravity/mcp.json
• Windows: %APPDATA%\Antigravity\mcp.json

You can also open Settings → MCP and use the in-app editor, which writes to the same file.

Paste the slipstream block

{
  "mcpServers": {
    "slipstream": {
      "command": "node",
      "args": ["/absolute/path/to/slipstream/dist/mcp/index.js"]
    }
  }
}

If the file already has an mcpServers block, add the slipstream key alongside the existing entries.

Restart Antigravity

Fully restart Antigravity. On startup it spawns the slipstream MCP server over stdio and the dashboard server boots automatically.

Verify the tools appear

Open the Antigravity agent panel and ask:

list your MCP tools

You should see the 14 sp_ tools: sp_map, sp_symbol, sp_lines, sp_search, sp_search_memory, sp_timeline, sp_observations, sp_lessons, sp_savings, sp_budget, sp_dashboard, sp_remember, sp_recall, sp_mindmap.

Then ask the agent to call sp_dashboard. It returns a 127.0.0.1 URL. Open it in your browser; the live dashboard fills in as the agent works.

Troubleshooting

• No tools listed. Settings → MCP shows the resolved config path and a status row per server. Click the slipstream row to see the server log.
• "command not found: node" in the server log. Antigravity inherited a PATH without Node. Set an absolute path, for example "command": "/usr/local/bin/node" on macOS or "C:\\Program Files\\nodejs\\node.exe" on Windows.
• Server starts then exits immediately. Re-run npm run build in the slipstream clone; the path in args must point at a built dist/mcp/index.js, not the TypeScript source.
• Dashboard tab is empty. Ask the agent to call sp_map first; the dashboard reflects MCP activity, so it stays quiet until a tool runs.
• MCP settings missing entirely. Your preview build may predate MCP support. Update to the latest Antigravity channel and try again.

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SarmaLinux . sarmalinux.com . Repository