Version 2.1.59

Hold the Space bar to dictate text via speech-to-text, with real-time transcription streamed over WebSocket to Claude.ai's /api/ws/speech_to_text/voice_stream endpoint.

/voice          # Toggle voice mode on/off

Then hold Space to record; release to stop. The transcript is injected into the input field.

• Requires a Claude.ai account (OAuth); run /login first if not signed in
• Persisted via the voiceEnabled setting in settings.json
• Audio capture uses a bundled native module (audio-capture.node) on macOS/Linux, with fallback to sox (rec command) or arecord on Linux
• Offers guided SoX installation (detects brew, apt-get, dnf, pacman) if no audio tool is found
• Supports a "focus mode" that continuously records when the terminal has focus, flushing each finalized segment immediately
• Cursor displays an animated audio-level indicator (bar graph characters ▁▂▃▄▅▆▇█) with color cycling while recording
• Shows "listening…" while recording and an animated "Voice: processing…" while finalizing
• Supports 11 languages: English, Spanish, French, Japanese, German, Portuguese, Italian, Korean, Chinese, Hindi, Indonesian — configured via the language setting
• Microphone permission checks with platform-specific guidance (macOS: System Settings → Privacy & Security → Microphone; Linux: system audio settings; Windows: Settings → Privacy → Microphone)
• Not available in remote/headless environments — prints helpful message directing users to run locally

/voice command (search for "Toggle voice mode"), WebSocket client (search for "/api/ws/speech_to_text/voice_stream"), settings definition (search for "voiceEnabled")

[Gradual Rollout] — Gated behind the tengu_amber_quartz feature flag (defaults to !1/false). The /voice command is hidden when the flag is off. Users with the flag enabled who are logged in to Claude.ai can use this feature.

Log in to Claude Code non-interactively by providing an OAuth refresh token via environment variables, enabling automated CI/CD and headless deployments without a browser.

export CLAUDE_CODE_OAUTH_REFRESH_TOKEN="your-refresh-token"
export CLAUDE_CODE_OAUTH_SCOPES="user:inference"
claude /login

• CLAUDE_CODE_OAUTH_SCOPES is required when using the refresh token — the CLI exits with a helpful error message if missing
• Scopes should be space-separated (e.g., "user:profile user:inference user:sessions:claude_code user:mcp_servers")
• Bypasses the browser-based OAuth flow entirely

Refresh token login flow (search for "CLAUDE_CODE_OAUTH_REFRESH_TOKEN")

A new fastModePerSessionOptIn setting makes fast mode non-persistent, so each new session starts with fast mode off.

• When true, fast mode does not carry over between sessions — users must re-enable it each session
• Useful for users who want fast mode available but not always on by default

Setting description (search for "When true, fast mode does not persist across sessions")

The copy command now lets you choose between copying the full response or individual code blocks, with language-aware file extensions for saved snippets.

• When Claude's response contains code blocks, pressing the copy shortcut presents a picker: "Full response" or each individual code block (with language label and line count)
• Falls back to saving to a file (e.g., response.md, copy.py) if clipboard access is unavailable, and shows the file path
• Replaces the old behavior that only copied the full response as markdown
• The old shell-snippet-only copy feature (tengu_snippet_save) has been removed

New UI text (search for "Select content to copy:"), file save (search for "response.md")

A new ZIP-based caching system for MCP plugins, enabling efficient plugin distribution in headless and CI environments.

• Controlled by the CLAUDE_CODE_PLUGIN_CACHE_DIR environment variable
• Creates versioned ZIP archives of plugin directories (with .zip extension)
• Session-scoped plugin cache directories (claude-plugin-session-*) are automatically created and cleaned up
• Marketplace JSON metadata is persisted alongside plugin ZIPs for offline resolution
• Handles symlink cycles during ZIP creation with cycle detection
• Includes CLAUDE_CODE_DISABLE_OFFICIAL_MARKETPLACE_AUTOINSTALL env var to disable automatic marketplace plugin installation

ZIP cache mode (search for "zip cache mode"), session cache (search for "claude-plugin-session-")

The platform detection module now identifies the version control system in use. It checks for .git (git), .hg (Mercurial), .svn (SVN), .p4config/P4PORT (Perforce), and $tf/.tfvc (TFS). This information is included in environment telemetry.

VCS detection map (search for "mercurial", "perforce")

On Linux systems, Claude Code now reads /etc/os-release to capture linuxDistroId, linuxDistroVersion, and linuxKernel for improved platform-specific diagnostics.

Distro detection (search for "linuxDistroId")

The turn duration indicator now shows how many background tasks are still running after each turn (e.g., · 2 background tasks still running ↓), making it easier to track background task activity.

Status line rendering (search for "background task" and "still running")

The auto-memory feature label has been updated from "Auto-memory (research preview)" to simply "Auto-memory", indicating the feature has graduated from its experimental phase.

String change — removed "Auto-memory (research preview):", added "Auto-memory:"

Writing .mcp.json now uses atomic file writes (write to temp file, then rename) to prevent corruption if the process is interrupted mid-write.

Atomic write helper (search for ".mcp.json" in added function Vw7)

A new file-based locking mechanism prevents concurrent MCP server OAuth token refreshes from colliding. Lock files (mcp-refresh-*.lock) coordinate between processes with retry logic and timeout handling.

Lock file naming (search for "mcp-refresh-")

When a hook produces invalid JSON output, the error message now says "The hook's output was:" (previously "The hook's stdout was:"), more accurately reflecting that output may come from various sources.

Error message (search for "The hook's output was:")

Claude Code now detects when its working directory has been deleted and shows a clear error: Working directory "..." no longer exists. Please restart Claude from an existing directory.

Error message (search for "no longer exists. Please restart")

If git worktree cleanup fails during session exit, the error is now caught and logged ("Worktree cleanup failed, exiting anyway") instead of potentially blocking shutdown.

Error message (search for "Worktree cleanup failed")

A new telemetry metric (tengu_repo_text_file_size) calculates the total byte size of text source files in the repo using git ls-tree. It counts files with common code extensions (.ts, .py, .js, .go, .rs, etc.) to help understand repository scale.

Metric calculation (search for "repoTextSize")

Session memory loading now uses async file reading and handles ENOENT/EACCES/EPERM errors gracefully by returning null, instead of synchronously checking file existence first.

Error handling (search for "tengu_session_memory_loaded")

• Fixed safe-flag parsing for combined short flags in commands like grep and rg (e.g., -A5 is now correctly recognized as -A with value 5 when -A accepts a number) (search for "grep" and "rg" in function Hn7)

• Improved Remote Control error messaging: users on unsupported plans now see "Error: Remote Control is not yet available on your plan." (search for "Remote Control is not yet available")

• Fixed line-reference edit operations to properly validate hash mismatches with clear error messages showing expected vs actual hash, preventing silent corruption when files change between reads (search for "LINE#HASH")

Infrastructure for routing requests to the Opus 4.6 model when a coral_reef_opus feature flag is enabled server-side.

Feature-flagged via coral_reef_opus

• When coral_reef_opus is "true" and the model string contains "opus-4-6", a special token limit of 1,000,000 is applied
• Extended output is enabled for matching Opus 4.6 models via the HbA() function
• Gated behind multiple checks: not in test mode, not using custom provider

Model routing (search for "coral_reef_opus", "opus-4-6")