How to integrate E2b MCP with Antigravity

How to integrate E2b 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 E2b account to Antigravity IDE via Composio Connect, so it can run a Python script to analyze CSV data, execute JavaScript code to validate user input, start a sandbox and list installed packages, and more without ever putting your account credentials at risk.

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E2b is an open-source platform for running code in secure, sandboxed environments. It enables safe multi-language code execution for AI-powered apps.

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How to integrate E2b 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 E2b account to Antigravity IDE via Composio Connect, so it can run a Python script to analyze CSV data, execute JavaScript code to validate user input, start a sandbox and list installed packages, and more without ever putting your account credentials at risk.

Also integrate E2b with

ChatGPTOpenAI Agents SDKClaude Agent SDKClaude CodeClaude CoworkCodexOpenCodeCursorVS CodeOpenClawHermesCLIGoogle ADKLangChainVercel AI SDKMastra AILlamaIndexCrewAI

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 E2b 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 E2b account

Back in the Antigravity agent panel, ask the agent to connect to E2b or give it any E2b-related task.

For example, ask it to:

  • "Run a Python script to analyze CSV data"
  • "Execute JavaScript code to validate user input"
  • "Start a sandbox and list installed packages"

It will prompt you to authenticate and authorize access to E2b.

That is it. Composio tools are now available in Antigravity, and your E2b account is ready to use.

Conclusion

You have successfully connected E2b to Antigravity using Composio Connect. Your agent can now use E2b securely without exposing credentials in prompts or local scripts.

TOOLS

Supported Tools

Every E2b action and event your agent gets out of the box.

Connect to Sandbox

Tool to connect to an existing E2B sandbox and retrieve its details.

Create Template

Tool to create a new E2B template with specified configuration.

Create Webhook

Tool to register a new webhook to receive sandbox lifecycle events for the team.

Delete Sandbox

Tool to terminate and permanently delete a running E2B sandbox instance.

Delete Webhook

Tool to unregister a webhook and stop receiving lifecycle events.

Check API Health

Tool to check the health status of the E2B API.

Get Sandbox

Tool to retrieve detailed information about a specific sandbox by its ID.

Get Sandbox Logs

Tool to retrieve logs from a specific E2B sandbox instance.

Get Sandbox Lifecycle Events

Tool to retrieve the latest lifecycle events for a particular sandbox instance.

Get Sandbox Metrics

Tool to retrieve timestamped CPU, memory, and disk usage metrics for a sandbox.

Get Team Metrics

Tool to retrieve timestamped CPU, memory, and disk usage metrics for a team.

Get Team Maximum Metrics

Tool to retrieve the maximum value for a specific team metric in a given interval.

Get Template Build Status

Tool to get the status of a template build.

Get Template Files

Tool to get an upload link for a tar file containing build layer files.

Get Webhook Configuration

Tool to retrieve the current webhook configuration for a specific webhook.

List All Sandboxes

Tool to list all running and paused sandboxes associated with your team.

List Sandboxes Metrics

Tool to retrieve timestamped CPU, memory, and disk usage metrics for multiple sandboxes.

List Team Sandbox Lifecycle Events

Tool to retrieve the latest lifecycle events across all sandboxes associated with the team.

List All Templates

Tool to list all available E2B templates for your team.

List All Webhooks

Tool to retrieve all registered webhooks for your team.

Pause Sandbox

Tool to pause a running E2B sandbox preserving its filesystem and memory state.

Create Sandbox

Tool to create a new E2B sandbox from a template.

Set Sandbox Timeout

Tool to set the timeout for an E2B sandbox.

Refresh Sandbox

Tool to refresh an E2B sandbox and extend its time to live.

Start Template Build

Tool to start a build for an E2B template.

Update Template

Tool to update an E2B template configuration.

Update Webhook Configuration

Tool to update an existing webhook configuration including URL, enabled status, and subscribed events.

FRAMEWORKS

How to build E2b MCP Agent with another framework

ChatGPT logo

ChatGPT

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OpenAI Agents SDK logo

OpenAI Agents SDK

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Claude Agent SDK logo

Claude Agent SDK

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Claude Code logo

Claude Code

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Claude Cowork logo

Claude Cowork

Use E2b MCP with Claude Cowork

Codex logo

Codex

Use E2b MCP with Codex

Cursor logo

Cursor

Use E2b MCP with Cursor

VS Code logo

VS Code

Use E2b MCP with VS Code

OpenCode logo

OpenCode

Use E2b MCP with OpenCode

OpenClaw logo

OpenClaw

Use E2b MCP with OpenClaw

Hermes logo

Hermes

Use E2b MCP with Hermes

CLI logo

CLI

Use E2b MCP with CLI

Google ADK logo

Google ADK

Use E2b MCP with Google ADK

LangChain logo

LangChain

Use E2b MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use E2b MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use E2b MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use E2b MCP with LlamaIndex

CrewAI logo

CrewAI

Use E2b MCP with CrewAI

FAQ

Frequently asked questions

With a standalone E2b MCP server, the agents and LLMs can only access a fixed set of E2b tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from E2b and many other apps based on the task at hand, all through a single MCP endpoint.

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 E2b tools.

Yes, absolutely. You can configure which E2b 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.

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 E2b data and credentials are handled as safely as possible.

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Karan skipped his own birthday party to fix our critical issue. It was 10pm and he diverted his Waymo to help us instead. This really sets the bar — it shows the commitment you need when users rely on your software.

Harsha Gaddipati
Harsha Gaddipati
Co-founder, Slashy

A lot of students tell us that the moment their connected tools start talking to each other inside Opennote feels almost magical. The agent just knows them, and it's immensely helped keep new users on the platform.

Abhi Arya
Abhi Arya
Co-founder, Opennote

We chose Composio over Pipedream because it delivered depth where it mattered — niche tools and tricky edge cases other platforms simply ignored. That gave us confidence to scale without compromising.

Nirman Dave
Nirman Dave
CEO, Zams

As a solo builder, shipping fast is life or death. The only way I can outcompete incumbents is by outmanoeuvring them. Getting bogged down managing agent auth would have been a death sentence.

Ryan Yu
Ryan Yu
Founder, Extra Thursday

Before Composio, adding tool integrations was slow and resource-intensive. Each one could take weeks of engineering time, and maintaining them meant constantly keeping up with API changes.

Tomisin Jenrola
Tomisin Jenrola
Founder & CEO, SwarmZero

With hands-on help from their founder, we integrated Gmail and Google Drive in just 30 minutes. This level of personal support and commitment is exactly what startups should strive for.

Jerome Leclanche
Jerome Leclanche
Co-Founder, Ingram Technologies