Chrome extension
Check MCP context usage while you work.
The MCP Context Token Calculator gives you a quick way to estimate the context footprint of MCP tool definitions before you connect a larger tool set to an AI client.
MCP Context Token Calculator
Available in the Chrome Web Store
Review tool context
Understand the context cost of MCP tool definitions as you evaluate an integration.
Keep it in your browser
Open the extension when researching MCP servers, tools, and agent workflows.