Research browser extensions across Chrome, Firefox and Edge with the Extenshi catalog, and get help building and shipping your own: icons, manifests, store-readiness checks.
MCP connector Server URL https://mcp.extenshi.io/mcpCopy Login OAuth Tools Reads data21 export_ get_ get_ get_ get_ get_ get_ get_ get_ get_ get_ get_ get_ get_ get_ list_ list_ list_ list_ list_ search_
Changes data16 apply_ connect_ connection_ create_ create_ diff_ generate_ generate_ import_ link_ localize_ market_ publish_ record_ refresh_ rotate_
Deletes or can't be undone3 archive_ archive_ remove_
Skills 5 in the Claude listing
Extension icon design Design a browser-extension icon that stays readable at 16px in real Chrome, Firefox, and Edge toolbars, then verify and export it locally. Extension market research Research a browser-extension niche with real catalog data before building or positioning an extension: who the incumbents are, how crowded and how fresh the niche is, what they charge, what permission Extension store readiness Get a browser extension ready for store review: trim the manifest to the permissions it needs, predict what the Chrome Web Store will reject or send to slow manual review, prepare permission justifica Extension vetting Check whether a browser extension looks safe to install, using the Extenshi catalog: publisher and popularity, permissions in plain language, security score, user reviews, and safer alternatives. Installed extensions audit Audit the browser extensions a person already has installed: look up the safety score and risk category of every one in a single batch and produce a ranked list of what to review first. 
