Claude Code v1.0.122

What: Control which configuration sources Claude Code loads via a new --setting-sources command-line flag

How to use:

# Only load user settings (ignore project/local configs)
claude --setting-sources=user

# Load user and project settings (ignore local)
claude --setting-sources=user,project

# Managed environment mode (only enterprise policies and CLI flags)
claude --setting-sources=

Details:

• Valid source values: user, project, local (comma-separated)
• Policy settings and CLI flags are always loaded (cannot be disabled)
• Enables controlled environments where project settings should be ignored
• Affects CLAUDE.md loading, MCP server configuration, and agent definitions
• Evidence: St5() at line 447294, N4A() at line 348834, pn0() at line 340374, Rg() at line 348856

What: Configure which sandbox violations to ignore for specific commands or globally

How to use:

// In settings file
{
  "sandbox": {
    "ignoreViolations": {
      "*": ["/tmp", "/dev/null"],           // Ignore these paths for all commands
      "npm install": ["/private/var/folders"], // Ignore for specific command
      "python": ["/Library/Python"]
    }
  }
}

Details:

• Reduces noise from expected/harmless sandbox violations
• Violations are now correlated with the specific command that triggered them
• Commands are base64-encoded in sandbox logs for precise tracking
• Each violation now includes the command, not just the filesystem path
• Evidence: Ec4 schema at line 370115, eR2() at line 370611, jc4() at line 370372

What: Configure MCP servers to use WebSocket connections directly

How to use:

{
  "mcpServers": {
    "my-server": {
      "type": "ws",
      "url": "ws://localhost:8080",
      "headers": {
        "Authorization": "Bearer token123"
      }
    }
  }
}

Details:

• Previously WebSocket was only available for internal IDE communication
• Now supports custom headers and authentication
• Complements existing stdio, SSE, and HTTP transports
• Evidence: F56 schema at line 388759, transport enum updated at line 388727

What: Define custom agents using JSON format in addition to Markdown files

How to use:

{
  "agents": {
    "my-agent": {
      "description": "Handles custom tasks",
      "prompt": "You are a specialized agent for...",
      "tools": ["Read", "Write", "Bash"],
      "model": "claude-3-5-sonnet-20241022"
    }
  }
}

Details:

• Enables programmatic agent configuration without creating .md files
• Supports runtime agent configuration via settings files
• Agents can now come from "flagSettings" source (CLI configuration)
• Includes validation with clear error messages for invalid definitions
• Evidence: QRB schema at line 434547, GRB() at line 434642, $K5() at line 434622

What changed: macOS sandbox policies rewritten based on Chrome's security model, replacing broad wildcards with explicit whitelists

How it works now:

• Process permissions: Only allows process-exec, process-fork, and same-sandbox operations (previously allowed all process operations)
• Mach IPC: Restricts to 9 specific Apple system services instead of allowing all Mach operations
• IOKit access: Limited to specific device classes (IOSurfaceRootUserClient, RootDomainUserClient) instead of all IOKit operations
• Sysctls: Whitelists ~45 specific hardware/kernel information sysctls instead of allowing all reads
• File I/O: Specific device files only (/dev/null, /dev/random, etc.)

Details:

• Follows principle of least privilege
• Based on Chromium's battle-tested sandbox implementation
• Breaking change: Commands relying on unrestricted system access may fail
• Unix socket configuration changed: allowUnixSockets now only accepts array of paths (boolean values removed)
• Evidence: kc4() at line 370411 (new profile generator replacing eb6() at line 374940 in v1.0.120)

What changed: Protected directories are now discovered dynamically instead of using a static list

How it works now:

• Automatically finds and protects all .claude/commands and .claude/agents directories in your project
• Uses ripgrep to locate Claude-specific directories at runtime
• Prevents accidental deletion or modification of Claude configuration
• Also protects user config files: .gitconfig, .bashrc, .zshrc, .profile, .ripgreprc, .mcp.json

Details:

• Adapts to your project structure automatically
• No manual configuration needed
• More reliable protection across different project layouts
• Evidence: iR2() at line 370172 (replaces static ZQB() at line 374759 in v1.0.120)

What changed: Slash command descriptions are now limited to prevent excessive context window usage

How it works now:

• Default character budget: 15,000 characters
• Configurable via SLASH_COMMAND_TOOL_CHAR_BUDGET environment variable
• Shows notification when commands are truncated: "(Showing 25 of 50 commands due to token limits)"
• Only includes commands with user-specified descriptions (excludes built-in commands without descriptions)

Details:

• Prevents unlimited context consumption with many custom commands
• Prioritizes commands by order (shows first N that fit in budget)
• Separate token tracking for slash command overhead
• Evidence: GM6() at line 402246, G4B() at line 402255, Y4B() at line 402266

What changed: Ultrathink mode now recognizes natural language variations

Trigger phrases:

• "ultrathink" (original)
• "think ultra hard" (new)
• "think ultrahard" (new)

Details:

• More discoverable and intuitive for users
• Backward compatible with original trigger
• Evidence: DU1() at line 361856 (replaces dw1() at line 366346 in v1.0.120)

What changed: OAuth account display names are now captured and synchronized

How it works now:

• Display names are fetched from /api/oauth/profile endpoint
• Stored alongside email, organization, and UUID
• Automatically updated during token refresh
• Available for showing richer user identification

Details:

• Improves user identification beyond email addresses
• Kept in sync with server changes
• Evidence: Dq0() at line 405124 returns { subscriptionType, displayName } (previously JB0() at line 371316 returned only subscription string)

What changed: Checkpoint gitignore now prevents duplicate entries and has better error logging

How it works now:

• Reads existing .gitignore before appending to avoid duplicates
• Uses structured error logging with explicit error levels
• Better path handling with trailing slashes
• Creates parent directories if needed

Details:

• More robust against repeated invocations
• Cleaner .gitignore files
• Better error reporting and telemetry
• Evidence: yy6() at line 412545, aY1() at line 404121 (enhanced from u35() and Z61() in v1.0.120)

What changed: /status command output reordered and enhanced

New section order:

1. Working directory (moved to top)
2. Setting sources (new section showing which configs are active)
3. Installation status
4. System diagnostics
5. MCP servers
6. Account information
7. API provider
8. Memory usage

Details:

• Most frequently needed information appears first
• New "Setting Sources" section shows enabled config sources
• Account information extraction refactored for reusability
• Evidence: Ey6() at line 411883 (new section), My6() at line 411961 (refactored account display)

What: Internal analytics to detect user frustration and PR creation requests

Details:

• Analyzes conversation patterns to identify frustrated users
• Detects explicit pull request creation requests
• Sends telemetry event tengu_session_quality_classification for matching sessions
• Uses a lightweight model to analyze user message patterns
• No user-visible changes
• Evidence: jr5() at line 442431, Pr5() at line 442426

What: Removed USE_LOCAL_OAUTH environment variable support

Details:

• Previously allowed switching between "local" and "prod" OAuth modes
• Now hardcoded to "prod" mode only
• Simplifies OAuth configuration
• Evidence: M9A() at line 346962 always returns "prod" (replaced ao1() at line 339979 in v1.0.120)

What: Agent loading architecture improved for better maintainability

Details:

• Extracted deduplication logic into reusable YR() at line 434554
• Task tool description generation moved to PXB() at line 419667 (same output as before)
• Support for "flagSettings" agent source added
• More modular code structure
• No user-visible behavioral changes

What: New helper to detect assistant responses containing only thinking blocks

Details:

• xQB() at line 396683 checks if response is all <thinking> content
• Enables better handling of extended thinking responses
• Internal optimization, no user-facing changes

1. Sandbox allowUnixSockets configuration:

• v1.0.120: Accepted true, false, or array of paths
• v1.0.122: Only accepts array of specific paths
• Migration: Change allowUnixSockets: true to allowUnixSockets: ["/path/to/socket"]

1. Stricter macOS sandbox policies:

• Commands requiring unrestricted Mach IPC, IOKit, or sysctl access may fail
• Review sandbox violations and add to ignoreViolations if needed

{
  "sandbox": {
    "ignoreViolations": {
      "*": ["path1", "path2"],  // Global ignore patterns
      "command-pattern": ["path3"]  // Command-specific ignore patterns
    }
  }
}

Fixed checkpoint gitignore logic to check for existing patterns before appending, preventing duplicate **/.claude/checkpoints entries in .gitignore files.

• Evidence: aY1() at line 404121 now reads file content before appending

Note: All line numbers reference /home/shcv/projects/claude-investigations/archive/pretty/pretty-v1.0.122.js unless otherwise specified.