How TweakThis is built and used: engineering write-ups and field reports from real feedback loops between a web app and the coding agent fixing it.
6 min read
Why UI feedback loses its context on the way to a coding agent, and how TweakThis sends it with the page, the element and a screenshot to Claude Code or Codex over MCP.

Install the extension, connect Claude Code or Codex to the MCP server, and send your first note from your own app. Every fix still waits for your review.
Browser extension and MCP server. Free plan, no card needed.
