[Release] anthropics/claude-code v2.1.224: v2.1.224

Claude Code v2.1.224 introduces self-hosted environments for running Claude sessions on custom machines, adds archive-based plugin installation with SHA-256 pinning, and implements cross-session messaging capabilities. The release includes enhanced sandbox credential-masking options, improved Remote Control connection handling, and numerous bug fixes addressing session management, file path resolution, and clipboard operations. Key security and stability improvements focus on credential protection, sandbox violation visibility, and preventing silent data loss in paste operations.

Key Points

• •Self-hosted runner capability: Deploy Claude Code sessions on your own machines/containers via `claude self-hosted-runner` (Team/Enterprise plans)
• •Archive plugin source: Install plugins from HTTPS-hosted zips with optional SHA-256 pinning, eliminating git/npm dependencies
• •Cross-session messaging: Sessions can discover and message each other via `SendMessage` and `ListAgents` (macOS/Linux)
• •Advanced sandbox credential masking: Support for JWT decoding with `maskClaims`, AWS SigV4 re-signing, and structured env value extraction
• •Session isolation fix: Long project paths no longer resolve to shared directories; session operations (list, rename, fork, delete) are now project-scoped
• •Improved Remote Control UX: Persistent failure indicators with reconnect shortcuts, compaction progress visibility, and proper `/clear` propagation
• •Enhanced security: Sandbox filesystem deny entries with trailing slashes now properly enforced; violation details visible in Bash tool results
• •Removed subagent spawn cap: Long-running sessions no longer limited to 200 subagents per session (concurrency/depth limits remain)
• •Credential masking in feedback: Model settings (system prompt, tool definitions, parameters) now uploaded with transcript shares (secrets redacted)
• •VSCode extension fixes: Proper Remote Control connection state reporting and `remoteControlAtStartup` setting honor

Workflow Diagram

Concepts