MCP App StoreMCP App StoreSKILL.md packages that extend Claude Code, Cursor, Copilot, and other AI agents.
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Fetcher
Typed event bus implementations (serial, parallel, broadcast) and cross-tab messengers for browser and Node.js — use to emit, handle, and broadcast typed events
claudecode-research-harness-workflow
Unified session management for Claude Code: initialize, resume, persist memory, control state, and broadcast messages across agent sessions.