4 items
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.
Sep 3, 2026
rating_count is the Chrome Web Store ratings count, not a written-review count.
Media assets
Screenshots and videos on the listing.
Has promo video
Whether the listing includes at least one video.
Languages
Declared language locales.
Developer website
Listing exposes a developer website URL.
Contact email
Listing exposes a contact email.
Keyword in name
Case-insensitive substring match in the name.
Keyword in description
Case-insensitive substring match in the description.
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.