# Google Antigravity and your knowledge base

Google Antigravity is an agent platform with an App, CLI, and IDE that supports [Model Context Protocol](https://www.knowman.io/guides/what-is-an-mcp-server), or MCP. A connected MCP server can provide live context and actions, so a [personal knowledge](https://www.knowman.io/guides/personal-knowledge-base) base can add information from your [saved reading](https://www.knowman.io/guides/ai-article-saver) when you connect it through the KnowMan MCP server. KnowMan can search your library, answer questions with citations, and keep memories such as claims, decisions, and playbooks.

## What Google Antigravity does

Google Antigravity supports MCP in its App, CLI, and IDE, according to the [Antigravity MCP documentation](https://antigravity.google/docs/mcp/). Its CLI supports both local stdio processes and remote host [MCP server](https://www.knowman.io/guides/mcp-server-knowledge-base) configurations. The documented MCP features focus on giving agents and editors access to developer tools, databases, parsers, and remote APIs.

## How Antigravity connects to MCP servers

Antigravity can use MCP servers to fetch structured context or execute safe actions. Live data from connected servers can inform its reasoning and suggestions, as explained in the Antigravity MCP documentation. The CLI includes an interactive MCP manager opened by typing `/mcp` in the prompt panel. Remote servers must use Streamable HTTP transport.

## Where Antigravity keeps MCP configuration

The Antigravity CLI reads global configuration from `~/.gemini/config/mcp_config.json`. Workspace configuration lives in `<workspace>/.agents/mcp_config.json`. These paths and their scope are documented in the Antigravity MCP documentation. Remote configurations can include custom HTTP headers, such as an `Authorization` header.

## What a personal knowledge base adds

A personal knowledge base gives an agent context beyond the current workspace. KnowMan saves articles and links, reads and tags them, [answers questions](https://www.knowman.io/guides/ai-knowledge-base) with citations, and keeps memories. Its MCP tools cover searching [saved items](https://www.knowman.io/guides/how-to-save-articles), asking questions, reading one item, saving links, viewing recent items, and accessing memories. Learn more in the guide to [using a personal knowledge base](https://www.knowman.io/guides/personal-knowledge-base).

## Connecting KnowMan through MCP

KnowMan provides a hosted remote MCP server at `https://api.knowman.io/mcp` using Streamable HTTP. You can sign in with OAuth or send an API key as `Authorization: Bearer <key>`, as described in the [KnowMan MCP repository](https://github.com/Essatt/knowman-mcp). Antigravity supports remote MCP servers with custom HTTP headers, including authorization headers, according to the Antigravity MCP documentation. A KnowMan account is required.

## What you can do with your library

Through the KnowMan MCP tools, Antigravity can search saved items, ask questions, read readable content from one item, save a URL with an optional note, list recent items, and access memories. The MCP server exposes `kb_search`, `kb_ask`, `kb_get_item`, `kb_save`, `kb_recent`, and `kb_memories`, as listed in the KnowMan MCP repository. See [connecting AI tools to your notes](https://www.knowman.io/guides/connect-any-ai-to-your-notes) for the broader workflow.

## Where KnowMan fits

KnowMan fits when Antigravity needs context from reading you chose to keep, rather than only the files in its current workspace. It can serve as a personal source for saved articles, cited answers, and durable memories. For more background, see [MCP servers and knowledge bases](https://www.knowman.io/guides/mcp-server-knowledge-base) and [persistent memory for AI agents](https://www.knowman.io/guides/persistent-memory-for-ai-agents).

## Questions

### What is Google Antigravity's knowledge base connection?

It is an MCP connection that can provide Antigravity with context and actions from an external service. Antigravity supports MCP in its App, CLI, and IDE, as described in the Antigravity MCP documentation.

### How does Google Antigravity connect to remote MCP servers?

The CLI uses remote server configurations with Streamable HTTP transport. Custom HTTP headers, including an `Authorization` header, can be included in the configuration, according to the Antigravity MCP documentation.

### Can Google Antigravity use the hosted KnowMan MCP server?

The hosted KnowMan endpoint is `https://api.knowman.io/mcp`, and it uses Streamable HTTP. It supports OAuth or an API key sent as `Authorization: Bearer <key>`, as documented in the KnowMan MCP repository.

### What can KnowMan add to Antigravity?

KnowMan can provide access to saved articles and links, cited answers, and memories through its MCP tools. The available tools cover searching, asking, reading, saving, recent items, and memories, as listed in the KnowMan MCP repository.

## Related guides

- [Connect your knowledge base through KnowMan's MCP server](https://www.knowman.io/guides/mcp-server-knowledge-base)

- [How Do You Connect AI to Your Notes?](https://www.knowman.io/guides/connect-any-ai-to-your-notes)

- [What Is a Knowledge Base for AI Agents?](https://www.knowman.io/guides/knowledge-base-for-ai-agents)

- [Persistent Memory for AI Agents](https://www.knowman.io/guides/persistent-memory-for-ai-agents)

- [What is a personal knowledge base, and how do you build one?](https://www.knowman.io/guides/personal-knowledge-base)

## More in this topic

- [Add your knowledge base to GitHub Copilot](https://www.knowman.io/guides/github-copilot-knowledge-base)
- [Microsoft Copilot Studio and your knowledge base](https://www.knowman.io/guides/copilot-studio-knowledge-base)
- [Jan and your personal knowledge base](https://www.knowman.io/guides/jan-knowledge-base)

## More for Google Antigravity

- [KnowMan MCP server for Google Antigravity](https://www.knowman.io/integrations/antigravity)
- [How to give Google Antigravity better memory](https://www.knowman.io/guides/antigravity-memory)
- [How to teach Google Antigravity your knowledge](https://www.knowman.io/guides/teach-antigravity-your-knowledge)

## Give Antigravity context worth keeping

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Source: https://www.knowman.io/guides/antigravity-knowledge-base