Flare now connects directly to Claude Code, Cursor, and Codex through a CLI bridge. No more copying prompts, changes go straight from browser to source code. The big addition is Canvas Mode: an infinite, Figma-like workspace on top of your running dev server. Generate AI design variants, compare them side by side, leave comments, and apply the winner to your codebase. Your agent writes the code in whatever format your project uses.

Breadcrumb is the Plausible of LLM tracing. Self-hosted, open source, and built for developers who just want to understand what their agents are actually doing without the enterprise bloat of LangFuse or LangSmith. Three lines to get your app traced. An LLM watches every trace and automatically flags issues: wrong tool calls, looping agents, oversized models and cost spikes, all before you even know something's wrong. Ask questions about your traces in plain English and get charts back.

Designers love Claude Code for prototyping, but tweaking designs is still hard. Flare fixes this. Works with any web app: Add a script tag or Vite plugin. Edit CSS visually in the browser, copy as a prompt, paste into Claude Code to update your source.