Knotr Knotr

Google Antigravity Custom MCP

Use Google Antigravity with the profile you keep in Knotr

Add a custom remote MCP server in Google Antigravity. Set serverUrl to https://knotr.ai/mcp/v1, then authenticate. This is separate from Gemini Spark. Briefs worth keeping can live on as a link you can open later.

Start for free

Setup takes a minute after you create a profile. Open Integrations → MCP.

What you can do

Knotr in Google Antigravity, not a generic feature list.

  • A profile Antigravity can actually call

    Load your Knotr profile in Google Antigravity so the agent starts from your voice and the knowledge you already trust.

  • Skills you are not rebuilding there

    The workflows you already keep in Knotr are ready in Antigravity after you connect. You do not rebuild them in that editor.

  • Keep the write-up after the session

    Ask Antigravity to save a brief or page as a Knotr artifact. Group several into a Collection when you want one link someone can walk through in order.

Simple setup

Exemplary steps only. After you sign up, Integrations has the real connect buttons for this profile.

  1. Sign up and create a profile.
  2. Open that profile, go to Integrations, and choose MCP. The server URL is https://knotr.ai/mcp/v1.
  3. In ~/.gemini/config/mcp_config.json, add a server under mcpServers with serverUrl set to https://knotr.ai/mcp/v1.
  4. Open Agent settings, go to Customizations, and choose Authenticate next to that server.
  5. Ask Antigravity to load your Knotr profile.

In Google Antigravity, add a custom remote server in ~/.gemini/config/mcp_config.json with serverUrl set to https://knotr.ai/mcp/v1. Open Agent settings, go to Customizations, and choose Authenticate. This is separate from Gemini Spark in Knotr. There is no separate Antigravity installer.

What travels with you

After you sign in, Google Antigravity can use your profile, the skills you share, and the notes you attached. It can also save a brief or page you want to keep.

Related starter packs

Pair Google Antigravity with a workspace tuned to how you work.

Software Development

Give your AI tools the review standards, architecture context, and writing rules your team already relies on, so every session starts productive.

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Product Management

Keep strategy, metrics, and prioritization rules in one place so PRDs and stakeholder updates stay aligned with how your team actually works.

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Strategy

Carry market assumptions, strategic themes, and decision frameworks into every planning session.

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Other tools

Same knowledge layer, every supported client .

ChatGPT

Your voice and skills in ChatGPT, plus a place to keep the work that would otherwise die in the chat.

Knotr for ChatGPT

Claude

Plugin and connector

Claude Desktop, Claude (web & mobile), and the Claude API, from the Knotr plugin or the directory connector.

Knotr for Claude

Claude Code

The same profile and skills as Cursor, from the CLI, with a place to keep what the session produces.

Knotr for Claude Code

Cursor

Your standards in every repo, and canvases you can reopen and share after the chat is gone.

Knotr for Cursor

Gemini

Gemini Spark

Your profile in Gemini Spark through a custom Connected App. Gemini Chat cannot use that connection.

Knotr for Gemini

Grok

Remote MCP

Your profile and skills in Grok. Add the remote MCP server, sign in, and keep the work worth saving.

Knotr for Grok

MCP

Any MCP client

Any compatible client. Same profile, same skills, same place to keep the output.

Knotr for MCP

Muse

Instructions only

Your persona in the Muse app. Skills and saved work live in Muse Code.

Knotr for Muse

Muse Code

The same profile and skills as Claude Code, from Muse Code, with a place to keep what the session produces.

Knotr for Muse Code

OpenAI Codex

MCP servers

One MCP setup for Codex CLI, the IDE extension, and the desktop app. Your profile comes with you.

Knotr for OpenAI Codex

OpenCode

Remote server

Your profile and skills in OpenCode. Add the remote server, sign in, and keep the work worth saving.

Knotr for OpenCode

Perplexity

Custom connector

Bring your profile into Perplexity and keep the work worth saving. Add Knotr as a custom connector and sign in.

Knotr for Perplexity

Common questions

Does Google Antigravity have a Knotr installer?
In Google Antigravity, add a custom remote server in ~/.gemini/config/mcp_config.json with serverUrl set to https://knotr.ai/mcp/v1. Open Agent settings, go to Customizations, and choose Authenticate. This is separate from Gemini Spark in Knotr. There is no separate Antigravity installer.
Where do I add the server in Google Antigravity?
Add a custom remote server in ~/.gemini/config/mcp_config.json with serverUrl set to https://knotr.ai/mcp/v1. Open Agent settings, go to Customizations, and choose Authenticate. Antigravity's guide is at https://antigravity.google/docs/mcp/. After you create a profile, open Integrations and choose MCP to see the same server URL.
Is this the Gemini Spark connection?
No. Gemini Spark has its own setup in Knotr. In Google Antigravity, add a custom remote server with serverUrl https://knotr.ai/mcp/v1 and authenticate. There is no separate Antigravity installer.
Can Google Antigravity keep work in Knotr?
Yes, after you sign in. Ask it to save the write-up as an artifact, or group several into a Collection and share the present link.
Is Knotr free to start?
Yes. Sign up free with no credit card. After you create a profile, open Integrations and follow the steps for that tool.

Ready to connect Google Antigravity?

Sign up free, create a profile, then open Integrations → MCP.

Create your account

Free · no credit card · about 2 minutes