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Loupe

Pin feedback to the live UI. Hand it to Claude.

Loupe is an open-source, embeddable visual-feedback SDK. A product manager inspects any element on a running product, pins a comment, and captures a screenshot. Comments persist, re-anchor across redeploys, and reach Claude Code as an actionable backlog via the Model Context Protocol (MCP).

SDK (in the product) → backend API → Postgres + object storage
      → dashboard (human triage)  ┐
      → MCP server (Claude reads)  ┘ → status flows back

Start here

• Getting Started — install, run, and try the demo in four commands.
• Architecture — the whole system, with diagrams.
• Re-anchoring — how a pin survives a redeploy (the crown-jewel algorithm).
• Authentication — per-project secrets + HMAC identity.
• MCP Integration — how Claude Code reads and resolves feedback.
• Browser Extension — inspect and comment on any site.
• Testing — test strategy and coverage.
• FAQ — quick answers.

Packages (npm workspaces monorepo)

Package	Responsibility
@loupekit/shared	Canonical types + normalizeUrl
@loupekit/sdk	The embeddable browser widget
@loupekit/server	API, Postgres, object storage, auth, static hosting
@loupekit/dashboard	Kanban triage board
@loupekit/mcp	MCP server for Claude Code
@loupekit/extension	MV3 browser extension

MIT licensed · TypeScript · Source on GitHub