How to integrate Customerio MCP with Antigravity

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How to integrate Customerio 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 Customerio account to Antigravity IDE via Composio Connect, so it can list all segments in your workspace, get delivery metrics for last week's emails, show all people in VIP customer segment, and more without ever putting your account credentials at risk.

Also integrate Customerio 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 Customerio 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 Customerio account

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

For example, ask it to:

  • "List all segments in your workspace"
  • "Get delivery metrics for last week's emails"
  • "Show all people in VIP customer segment"

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

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

Supported Tools & Triggers

Tools
Add Person to GroupTool to add people to a group in Customer.
Create Profile AliasTool to create an alias to merge multiple profiles in Customer.
Suppress Customer ProfileSuppress a customer profile to permanently delete it and prevent re-adding with the same identifier.
Get IntegrationsTool to retrieve a list of integrations in your workspace.
Get MessagesTool to retrieve a list of messages sent from your workspace.
Get Segment DetailsTool to retrieve details of a specific segment.
Get Segment MembershipTool to retrieve people in a specific segment.
Get SegmentsTool to retrieve a list of segments in your workspace.
Get TriggerRetrieves details about a specific API-triggered broadcast, including trigger ID, campaign ID, creation timestamp, recipient filter criteria, and personalization data.
Get Broadcast TriggersRetrieve all API trigger instances for a specific broadcast/campaign.
Get Customer.io Workspace WebhooksRetrieves all reporting webhook configurations from the Customer.
Identify PersonTool to identify a person and assign traits to them in Customer.
List CollectionsTool to list all Collections metadata.
List IP AddressesTool to retrieve the list of IP addresses used by Customer.
List NewslettersTool to list all newsletters.
List SnippetsTool to list all snippets in your workspace.
List Transactional MessagesLists all transactional message templates in your Customer.
Send Batch CDP CallsSend multiple CDP calls (identify, track, page, screen, group, alias) in a single batch request.
Track EventTool to send an event associated with a person in Customer.
Track Page ViewTool to track page view events for website visitors in Customer.
Track Screen ViewTrack mobile screen views in Customer.
Trigger BroadcastManually trigger a Customer.
Unsubscribe from DeliveryTool to handle custom unsubscribe requests for email deliveries in Customer.

Conclusion

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

How to build Customerio MCP Agent with another framework

FAQ

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

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

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

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

Used by agents from

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

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