Connect Apple Health to Gemini with MCP

What you need

An iPhone with Apple Health records, the telo app from the App Store, and a personal Google account. In telo, sign in and send your history; the first sync must finish before anything can be read.

Custom apps in the Gemini app are, per Google, limited to adults in the US, personal accounts, English, and Keep Activity turned on, and they must be added from a computer. Outside those limits, use Antigravity below. The steps follow the Google documentation reviewed on the date above; they are not a claim that every version has been tested with telo.

Add telo as a custom app in Gemini

1. On a computer, open gemini.google.com and go to Settings, then Connected Apps. If it is missing, go through Personal Intelligence first.
2. Under Custom apps, choose Add a custom app.
3. Enter https://telo.health/mcp and choose Next. telo supports dynamic client registration, so leave the advanced credential fields empty.
4. A telo page opens in your browser. Enter your email, type the 6-digit code and approve access. Never paste a code or token into the chat.
5. In a chat, type @ and pick telo. Once added on the web, it also works in the Gemini mobile app.

Or use Antigravity

Google retired Gemini CLI for personal accounts in June 2026, and Antigravity took its place. Put the entry above in ~/.gemini/config/mcp_config.json. Antigravity accepts Streamable HTTP only, which is what telo serves.

In the Antigravity app, open Customizations, then Installed, then MCP Servers, and choose Authenticate on telo. Sign in, paste the code back and submit. In the CLI (agy), run /mcp, pick telo and authenticate. Tool calls start in Ask mode, so you approve each one.

{
  "mcpServers": {
    "telo": {
      "serverUrl": "https://telo.health/mcp"
    }
  }
}

Check that Gemini can read Apple Health

1. Ask Gemini, with @telo, to list available metrics and the dates they cover.
2. Confirm the answer comes from a telo tool call with real dates. If it describes data without calling a tool, it is guessing.
3. In Antigravity, telo should show a status dot and the number of enabled tools.

A first prompt

Asking for coverage first keeps gaps visible. A missing day is unavailable, not zero.

Use telo to check which Apple Health metrics are available and how recent they are. Then compare my sleep and resting heart rate over the last 7 days with the 7 days before, and list the dates with missing records.

Troubleshooting and removal

If Add a custom app is missing, the account is outside the limits above: work or school account, outside the US, or Keep Activity off. Antigravity has none of those limits.

To remove telo from Gemini, open the app under Custom apps, choose More details, then Remove app. In Antigravity, delete or disable it in MCP Servers. If the connection works but records are missing, check the sync in the telo app. A working MCP connection does not prove that HealthKit read permissions were granted on the iPhone.

Practical questions