How to integrate Linkedin MCP with Antigravity

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How to integrate Linkedin MCP with Antigravity

Antigravity IDE is Google's agentic IDE, built on a VS Code-style editor and powered by models like Gemini 3.5 Flash, Gemini 3.1 Pro, Opus 4.6, and more. It treats the AI agent as a first-class teammate, planning, coding, and validating work through an Agent Manager dashboard with deep browser connectivity.

In this guide, I will explain the easiest and most secure way to connect your Linkedin account to Antigravity IDE via Composio Connect, so it can share a new post about our product launch, delete your last published LinkedIn post, fetch company pages I can manage, and more without ever putting your account credentials at risk.

Also integrate Linkedin with

Why use Composio?

Composio provides:

  • Access to 1,000+ managed apps from a single MCP endpoint. This makes it convenient for agents to run cross-app workflows.
  • Programmatic tool calling. Allows LLMs to write code in a remote workbench to handle complex tool chaining. Reduces to-and-fro with LLMs for frequent tool calling.
  • Large tool response handling outside the LLM context. This minimizes context bloat from large tool responses.
  • Dynamic just-in-time access to thousands of tools across hundreds of apps. Composio loads the tools your agent needs, so LLMs are not overwhelmed by tools they do not need.

Connect Linkedin to Antigravity

Antigravity does not ship with one-click custom MCP install links yet, so configuration goes through the IDE's raw config file. The process takes under a minute.

1. Open the MCP Config

Go to Antigravity Settings, open the Customizations tab, then click Open MCP Config to open mcp_config.json in the editor.

Antigravity Customizations settings with Open MCP Config button

2. Get your API key

Go to the Composio Dashboard and copy your API key.

Composio Dashboard showing where to get the API key

3. Add Composio to mcp_config.json

Paste the following configuration into the file:

bash
{
  "mcpServers": {
    "remote-composio": {
      "serverUrl": "https://connect.composio.dev/mcp",
      "headers": {
        "x-consumer-api-key": "your-composio-api-key"
      }
    }
  }
}

Note: Antigravity uses serverUrl, not url, for remote HTTP-based MCP servers. This differs from the url key used in Cursor and VS Code configs.

Save the file and click refresh in the Installed MCP Servers section.

Antigravity showing Composio tools after MCP setup

Connect your Linkedin account

Back in the Antigravity agent panel, ask the agent to connect to Linkedin or give it any Linkedin-related task.

For example, ask it to:

  • "Share a new post about our product launch"
  • "Delete your last published LinkedIn post"
  • "Fetch company pages I can manage"

It will prompt you to authenticate and authorize access to Linkedin.

That is it. Composio tools are now available in Antigravity, and your Linkedin account is ready to use.

Supported Tools & Triggers

Tools
Create article or URL shareTool to create an article or URL share on LinkedIn using the UGC Posts API.
Create comment on LinkedIn postTool to create a first-level or nested comment on a LinkedIn share, UGC post, or parent comment via the Social Actions Comments API.
Create a LinkedIn postCreates a new post on LinkedIn for the authenticated user or an organization they manage.
Delete LinkedIn PostDeletes a specific LinkedIn post (share) by its unique `share_id`, which must correspond to an existing share.
Delete PostDelete a LinkedIn post using the Posts API REST endpoint.
Delete UGC Post (Legacy)Delete a UGC post using the legacy UGC Post API endpoint.
Get ad targeting facetsTool to retrieve available ad targeting facets from LinkedIn Marketing API.
Get audience countsRetrieves audience size counts for specified targeting criteria.
Get company infoRetrieves organizations where the authenticated user has specific roles (ACLs), to determine their management or content posting capabilities for LinkedIn company pages.
Get image detailsTool to retrieve details of a LinkedIn image using its URN.
Get imagesTool to retrieve image metadata including download URLs, status, and dimensions from LinkedIn's Images API.
Get my infoFetches the authenticated LinkedIn user's profile information including name, headline, profile picture, and other profile details.
Get network sizeTool to retrieve the follower count for a LinkedIn organization.
Get organization page statisticsTool to retrieve page statistics for a LinkedIn organization page.
Get person profileRetrieves a LinkedIn member's profile information by their person ID.
Get post contentTool to retrieve detailed post content including text, images, videos, and metadata from LinkedIn by post URN.
Get share statisticsRetrieves share statistics for a LinkedIn organization, including impressions, clicks, likes, comments, and shares.
Get videosRetrieves video metadata from LinkedIn Marketing API.
Initialize image uploadTool to initialize an image upload to LinkedIn and return a presigned upload URL plus the resulting image URN.
List reactions on entityRetrieves reactions (likes, celebrations, etc.
Register image uploadTool to initialize a native LinkedIn image upload for feed shares and return a presigned upload URL plus the resulting digital media asset URN.
Search ad targeting entitiesSearch for ad targeting entities using typeahead search.

Conclusion

You have successfully connected Linkedin to Antigravity using Composio Connect. Your agent can now use Linkedin securely without exposing credentials in prompts or local scripts.

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FAQ

What are the differences in Tool Router MCP and Linkedin MCP?

With a standalone Linkedin MCP server, the agents and LLMs can only access a fixed set of Linkedin tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Linkedin and many other apps based on the task at hand, all through a single MCP endpoint.

Can I use Tool Router MCP with Antigravity?

Yes, you can. Antigravity fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Linkedin tools.

Can I manage the permissions and scopes for Linkedin while using Tool Router?

Yes, absolutely. You can configure which Linkedin scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

How safe is my data with Composio Tool Router?

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Linkedin data and credentials are handled as safely as possible.

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