nekuda WebMCP Workbench

WebMCP devtools + AI assistant: inspect, run, eval and audit your page's tools - then chat with any site through them.

The WebMCP developer toolkit + AI assistant, in Chrome's side panel. Developer Mode: • Tools — see every tool your page registers, inspect schemas, and run them by hand with schema-validated arguments. • Evals — ask a model your users' prompts and score whether it picks the right tools with the right arguments, run after run. • Audit — a 0–100 quality score for your toolset, with a concrete fix for every finding. • Logs — an exportable trace of every tool call and approval. • Saved calls — replayable tests that flag schema drif. User Mode • Experience the website like your users. Batteries included: use the free nekuda hosted model or bring your own API key (OpenAI, Anthropic, Google). Keys are stored locally, encrypted. Prerequisites: enable the "WebMCP for testing" flag at chrome://flags (Chrome 146+). USE SAFELY Browser AI can encounter prompt injection — hidden instructions on websites that attempt to hijack actions. Risky tool calls always ask for your approval. Start with trusted sites and review sensitive actions.