[FEATURE] Deep link to resume an existing Cowork session (claude://cowork/{session-id})

Summary

Claude Desktop's documented deep links (https://support.claude.com/en/articles/14729294-open-claude-desktop-with-a-link) cover new chats, existing claude.ai chats/projects, and new Cowork/Code sessions — but there is no link that resumes an existing local Cowork session by ID.

Ask

claude://cowork/{session-id}

Opens Claude Desktop directly to that Cowork session (or falls back to the session list for an unknown ID — same behavior claude://claude.ai/chat/{id} already has for invalid IDs).

Why it should be cheap to add

• The claude:// protocol handler and its router already exist and already resolve IDs for claude.ai/chat/{id}.
• Session IDs are already stable and known: ~/Library/Application Support/Claude/local-agent-mode-sessions/<org>/<user>/local_<uuid>.json.
• The app already navigates to these sessions from its own sidebar; the deep link only needs to trigger that same navigation.

Use case

External launchers (Stream Deck, Raycast, scripts, agent dashboards) that monitor multiple Cowork sessions and want to jump to the one that needs attention. Today the only path is: open app, find session in sidebar, click.

Related

• #50345 — same ask (resume by UUID), closed as duplicate
• #54614 — new Code session in folder via deep link
• #43943 — claude-desktop://resume?session=<id>

Platform

macOS, Claude Desktop (Cowork research preview).