Claude Code v0.2.56

Enhanced Permission System

• New granular permission rules: The permission system now supports more specific rule configurations with the ability to grant permissions for specific command patterns
• Example: You can now allow bash commands that start with specific prefixes like npm: or git:
• Rules can be configured through both CLI arguments and local settings

Supervisor Mode

• Added a new "supervisorMode" setting to the configuration options
• This appears to be a new operational mode for Claude Code (specific functionality details would need further investigation)

Environment Variable Overrides Display

• The welcome screen now displays active environment variable overrides when present, including:
• Custom API keys (shown as sk-ant-… with partial masking)
• Prompt caching status (shows "off" when disabled via DISABLE_PROMPT_CACHING)
• API timeout settings (from API_TIMEOUT_MS)
• Maximum thinking tokens (from MAX_THINKING_TOKENS)
• Custom API base URL (from ANTHROPIC_BASE_URL)

WebSearch Tool Enhancement

• WebSearch tool now supports domain filtering:
• allowed_domains: Restrict search results to specific domains
• blocked_domains: Exclude results from specific domains
• Example usage: Search only within documentation sites or exclude certain sources

Project-wide MCP Server Settings

• New enableAllProjectMcpServers configuration option
• Allows enabling all MCP (Model Context Protocol) servers for a project at once

Intelligent Retry Backoff

• Retry delays now include a random jitter (up to 25% of base delay) to prevent thundering herd problems
• This helps distribute retry attempts when multiple operations fail simultaneously

Host Validation Optimization

• Added caching for CLAUDE.md host validation to reduce repeated lookups
• Improves performance when checking URLs referenced in project documentation

Enhanced Spinner Animation System

• Refactored the progress indicator system with new Ov5 function
• Supports different spinner styles, colors, and update intervals based on context
• More flexible configuration for tool-use, responding, and thinking states

Stream Processing

• Updated stream handling to use proper Node.js stream imports
• Added new gk function for consuming async iterators completely

• Fixed duplicate comment issue (as mentioned in recent commits)
• Improved error handling in permission checking system
• Better handling of aborted operations with proper cleanup

• Refactored permission checking logic to use a rule-based system
• Updated tool configuration with new tools array structure
• Constants for line limits now properly defined (m91 and j91 both set to 2000)
• Better separation of concerns in the permission validation flow

None identified - the update maintains backward compatibility while adding new optional features.