WebMCP - Developer Tools is a Chrome add-on designed for testing and debugging WebMCP tools on websites. This free tool allows users to inspect all exposed WebMCP tools, providing detailed information such as names, descriptions, and JSON input schemas. It offers functionality to run tools manually, validate inputs, and instantly see results, which helps in identifying broken schemas before deployment. Additionally, it enables users to chat with Gemini 3, showcasing a seamless integration of tool functions in a cohesive workflow.

Targeted towards website owners, AI developers, and QA engineers, WebMCP - Developer Tools offers robust analytics features. Users can track total calls, success rates, and average latency, along with a log of recent activities. This ensures that developers can pinpoint performance issues and optimize their tools effectively. With a focus on privacy, the tool stores your Gemini API key locally and transmits no data to third parties, ensuring a secure testing environment.