Antigravity CLI

Setup with your assistant

Copy this prompt into Antigravity CLI. It guides the MCP setup, sign-in, and connection check.

Set up Valency in Antigravity CLI. Add the connection, complete sign-in, and verify the tools work.Copy prompt✓   Now paste it into your assistant

Prefer to set it up yourself?

1. Check agy mcp list for valency. If it is listed, do not add a second connection, even if sign-in is still needed. Otherwise run:

   agy mcp add --type http valency https://mcp.valency.io/

   This saves the direct connection for future Antigravity CLI sessions. Its server name is valency.

2. Start agy. If you added Valency while a session was already running, exit it and run agy -c from the same directory to resume that conversation with the new server loaded. If it asks Do you trust the contents of this project?, choose Yes, I trust this folder.

3. Sign in to Valency from the MCP manager:

   Antigravity CLI

   /mcp

   Highlight valency and press Enter. Press → until Authenticate is highlighted, then press Enter. Complete Valency's browser consent and sign-in. The server should show [Authed]; press Esc to return to the conversation. No API token, client ID, or secret is needed.

4. Ask Antigravity to call Valency's list_sources tool. A returned source list confirms that the agent can use the connection. Seeing [Authed] in /mcp alone confirms authentication, not a successful tool call.

5. Optional: stop repeated approval prompts for Valency tools. Open /permissions, choose Global, press a, and add mcp(valency/*) to the allowlist. The rule takes effect immediately.

   Keep feedback approval separate

   This allow rule includes Valency's feedback tool. To approve feedback submissions individually, use /permissions to add mcp(valency/submit_feedback) to the Global asklist. An asklist rule takes priority over the allowlist.

6. Ask (more prompt ideas):

   Use Valency to search for papers about quantum computing

What success looks like

You see paper results in your terminal, with sources you can inspect.

Coming from the Gemini CLI?

Antigravity is where Google moved Gemini CLI users (opens in new tab), and Valency no longer supports the Gemini CLI. Set Valency up here instead. The two are separate hosts with separate sign-ins.

Troubleshooting

Valency does not appear in /mcp? Run agy mcp list to check the direct connection. If it is disabled, run agy mcp enable valency. If you added it during an open session, exit and resume with agy -c from the same directory.

Tools don't appear after sign-in? Confirm /mcp shows Valency as [Authed], then resume the session with agy -c so it loads the new tools. Ask for list_sources again.

Still asked to allow every Valency tool? Check that /permissions → Global has the mcp(valency/*) allow rule.

Need to start over with a direct connection? Run agy mcp remove valency, then follow the add and sign-in steps above.

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Need help?

If something isn't working, check Troubleshooting for common fixes. See the FAQ for general questions, or report an issue if you're still stuck.