Claude Code 2.1.94: Bedrock Support, Effort Defaults

TL;DR

• Amazon Bedrock support now available via Mantle integration
• Default effort level bumped to high for API-key and enterprise users
• Fixed rate-limit handling, macOS keychain login, and terminal rendering bugs

New

• Amazon Bedrock support — Set CLAUDE_CODE_USE_MANTLE=1 to route requests through Bedrock powered by Mantle.
• Compact Slack headers — Slack MCP send-message tool calls now display a clickable channel link in a compact header format.
• Plugin skill naming — Skills declared via "skills": ["./"] now use frontmatter name for invocation instead of directory basename, ensuring stable names across install methods.
• Frontmatter support — Added keep-coding-instructions field for plugin output styles and hookSpecificOutput.sessionTitle for UserPromptSubmit hooks.

Fixed

• Rate-limit handling — Agents no longer appear stuck after 429 responses with long Retry-After headers; errors now surface immediately.
• macOS keychain login — Console login failures due to locked keychain or out-of-sync passwords now surface errors and claude doctor diagnoses the fix.
• Plugin hooks — YAML frontmatter hooks and CLAUDE_PLUGIN_ROOT resolution now work correctly; fixed "No such file or directory" errors.
• Session rendering — Fixed scrollback repeating diffs, blank pages in long sessions, and alt-screen ghost lines from mid-scroll height changes.
• Transcript formatting — Multiline user prompts now indent wrapped lines correctly instead of under the caret.
• Terminal input — Shift+Space in search inputs now inserts a space character instead of the literal word "space".
• Hyperlinks in tmux — Fixed hyperlinks opening two tabs when clicked inside xterm.js-based terminals (VS Code, Hyper, Tabby).
• Bedrock Sonnet 3.5 v2 — Fixed invocation by using the correct us. inference profile ID.
• SDK/print mode — Partial assistant responses now preserved in conversation history when interrupted mid-stream.
• UTF-8 handling — Fixed CJK and multibyte text corruption (U+FFFD) in stream-json when chunk boundaries split sequences.
• Accessibility — Native terminal cursor now tracks selected tab in dialogs for screen readers and magnifiers.
• VSCode — Reduced cold-open subprocess work, fixed dropdown menus selecting wrong items during typing, added warning banner for unparseable settings.json files.

Changed

• Default effort level — Bumped from medium to high for API-key, Bedrock/Vertex/Foundry, Team, and Enterprise users; control with /effort.
• Session resume — --resume now resumes sessions from other worktrees of the same repo directly instead of printing a cd command.
• FORCE_HYPERLINK — Environment variable now respected when set via settings.json env.

Update Claude Code: npm install -g @anthropic-ai/claude-code

Source: Claude Code