How to integrate Nango MCP with Antigravity

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How to integrate Nango 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 Nango account to Antigravity IDE via Composio Connect, so it can list all connected CRM accounts, trigger manual sync with Salesforce provider, get configuration for all available scripts, and more without ever putting your account credentials at risk.

Also integrate Nango 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 Nango 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 Nango account

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

For example, ask it to:

  • "List all connected CRM accounts"
  • "Trigger manual sync with Salesforce provider"
  • "Get configuration for all available scripts"

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

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

Supported Tools & Triggers

Tools
Trigger Nango ActionTrigger a Nango action to execute a workflow or operation.
Add ConnectionTool to add a connection with existing credentials to Nango.
List ConnectionsList all Nango connections without credentials.
Create Connect SessionTool to create a new connect session with a 30-minute lifespan for enabling connection creation via Connect UI.
Create IntegrationTool to create a new integration in Nango.
Delete ConnectionTool to delete a specific Nango connection.
Delete IntegrationTool to delete a specific integration by its unique key.
Edit ConnectionTool to edit a connection's tags and metadata.
Get Connection with CredentialsRetrieve a specific connection with its credentials.
Get Environment VariablesTool to retrieve environment variables from the Nango dashboard.
Get IntegrationRetrieve detailed configuration for a specific Nango integration by its unique key.
Proxy GET RequestTool to make a GET request with Nango's Proxy to forward requests to external APIs while managing authentication.
Get Sync StatusTool to get the status of specified sync(s) for a connection or all connections.
List ConnectionsTool to list all connections without credentials.
List IntegrationsTool to retrieve a list of all configured integrations.
Get Provider DetailsRetrieve detailed configuration for a specific Nango provider by its unique key.
List ProvidersTool to retrieve a list of all available providers.
Proxy PUT RequestTool to make a PUT request with the Nango Proxy to forward requests to external APIs while managing authentication.
Reconnect SessionCreate a new connect session to reconnect to a specific integration.
Get Integration Functions ConfigurationRetrieve all integration functions configuration from Nango.
Set Connection MetadataTool to set custom metadata for one or more Nango connections.
Trigger SyncTool to trigger sync process(es) manually.
Update Connection MetadataTool to edit custom metadata for one or multiple connections.
Update IntegrationTool to update an existing integration's configuration.

Conclusion

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

How to build Nango MCP Agent with another framework

FAQ

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

With a standalone Nango MCP server, the agents and LLMs can only access a fixed set of Nango tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Nango 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 Nango tools.

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

Yes, absolutely. You can configure which Nango 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 Nango data and credentials are handled as safely as possible.

Used by agents from

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Letta
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HubSpot
Agent.ai
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DataStax
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Context
Letta
glean
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Agent.ai
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Entelligence
Rolai

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