Yes. Antigravity reads MCP servers from mcp_config.json. Add Fulcra with serverUrl as shown above. Your Fulcra data stays the same, so nothing needs to move.
Keep one preferences file or record set in Fulcra and connect each assistant to it. Agents with a shell can use the fulcra-prefs skill: npx skills add fulcradynamics/agent-skills --skill fulcra-prefs. See Keep preferences consistent across AI assistants.
Yes. Fulcra works in notebooks through the fulcra-api Python library (pip install fulcra-api), so you can pull your data into Colab and ask Gemini in Colab to chart it. See Is there an MCP server for Apple Health data?
Have it ask Fulcra for updates since its last check (uvx fulcra-api data-updates "1 day" or the get_data_updates tool), then read only what changed. See How an agent finds out what changed since its last run and Share state between a cron agent and your interactive agent.
Gemini's memory belongs to Gemini, so Claude, ChatGPT and your own scripts can't read it. A user-owned store like Fulcra lives outside any one assistant: you can export it, delete it, and connect any agent you choose. Read the full answer.
If both agents run as services, Google's A2A protocol lets one send the other tasks over HTTP. For personal agents with no endpoint to call, Fulcra's connect-our-agents skill sets up a channel you both opt into, and nothing else in either account is shared. Read the full answer.