#browser use (1)

claude-quickstarts: the Claude app reference code Anthropic uses itself, opened up - 18 runnable projects across sessions, tools, computer use, and Managed Agents

Anthropic opened up the reference code it uses to build Claude apps as claude-quickstarts: 18 fully runnable projects in three tiers - chat apps (customer support, financial analysis), desktop and browser operation (computer-use demo, a native-macOS best-practices reference, minimal browser and computer toolset examples), and long-running agents plus the Managed Agents ecosystem (multi-channel chat, AG-UI generative UI, cron deployments, a distilled knowledge wiki, a nine-tool MCP server). MIT licensed, about 18.6k stars at capture. The closest read is computer-use-best-practices: screenshot resizing, prompt caching, server-side compaction, batched tool calls, a sandboxed shell, and trajectory recording, all written directly into code.