How to Connect eRS to Google Antigravity: Step-by-Step Guide

The eResource Scheduler MCP server lets you work with your eRS data from Google Antigravity. Setup takes about 5 minutes: an eRS admin enables the MCP server once, then each user adds eRS to their own Antigravity MCP configuration.

Before You Start

You will need:

• An eRS administrator to turn on the MCP server (Part A). This is done once per account.
• Your own eRS login. Antigravity signs in as you, so it can only see and do what your eRS access rights allow.
• Google Antigravity installed, plus Node.js (the setup uses npx to run mcp-remote).

Important: eRS passwords, API keys, and access tokens should never be pasted into a client configuration file. Authentication happens through eRS OAuth in the browser, not through pasted credentials.

Part A: Enable the MCP Server in eResource Scheduler (Admin, One Time)

Skip to Part B if your admin has already enabled it and shared the endpoint URL.

Step 1. Open Administration

Log in to eResource Scheduler. Click your name in the top-right corner, then click Administration.

Step 2. Turn on the MCP Server

In the left menu, under INTEGRATION, click MCP Server. Switch the toggle at the top right from Disabled to Enabled. By enabling it, you agree to the MCP Server terms in the Terms of Service.

Step 3. Copy the endpoint URL

Once enabled, the page shows the Endpoint URL: https://app.eresourcescheduler.cloud/mcp. Click the copy icon next to it. Share this URL with anyone in your team who will connect Google Antigravity.

Part B: Add eResource Scheduler to Google Antigravity (Each User)

Step 1. Open the MCP configuration

Open Settings and go to Customizations. Under Installed MCP Servers, click Open MCP Config.

Step 2. Add the eRS configuration

Add this configuration to the file and save it:

{
  "mcpServers": {
    "eResource-Scheduler": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://app.eresourcescheduler.cloud/mcp"
      ]
    }
  }
}

Step 3. Sign in to eRS

Antigravity prompts you to authenticate with eRS.

The eRS login page opens in your browser. Enter your eRS Login ID and password and click Login, or click Single Sign On if your company uses SSO.

Step 4. Confirm the connection

Under Installed MCP Servers, eResource-Scheduler is switched on and shows its tools as enabled.

Start Using eRS in Antigravity

Open a new conversation in Antigravity and ask about your schedule in plain language. Mentioning "eResource Scheduler" in your first request helps it pick the right tools. Some prompts to try:

• "Using eResource Scheduler, show me who is booked on Project B next week."
• "What is the team's utilization this month by primary role?"
• "Which resources are free for 3 days next week?"
• "Book Grace Jonas on Project D at 50% from 5 to 9 October."
• "List timesheets waiting for my approval."

Learn More

Once connected, use these guides to see what you can ask:

• Ask AI Assistant About Your Reports
• Ask AI Assistant About Your Resources
• Ask AI Assistant About Your Projects
• Ask AI Assistant About Your Schedule
• Ask AI Assistant About Rates
• Ask AI Assistant About Your Timesheets
• eRS MCP Server: Tools & Prompting Guide

Troubleshooting

Note: Admin-related settings, such as Resource, Project, Booking, Requirement, and Timesheet profiles, along with calendar changes and user rights, can take up to 10 minutes to reflect through the eRS MCP Server. eRS also doesn't control how a connected AI client stores or uses retrieved data, so it's worth checking that client's own data retention and training settings wherever this matters to the organization.