Claude Code v2.0.11

What: Support for Claude's new structured outputs API feature via the beta header structured-outputs-2025-09-17

Details:

• Tools can now opt-in to strict schema validation by setting strict: true
• When using a model with structured outputs support and tools marked as strict, Claude will enforce exact adherence to the tool's input schema
• Core tools (Bash, Read, Edit, Write) have been updated with strict: true for improved reliability
• Automatically detected via model name containing -structured-
• Evidence: New constant Ey2 = "structured-outputs-2025-09-17" at line 376349 and detection function OV0() at line 376356 in v2.0.11

What: New built-in agent specialized for fast codebase exploration and file searching

When to use:

# Automatically invoked when searching for files or exploring code
# Fast operations: finding files by patterns, searching code for keywords,
# answering questions about codebase structure

Details:

• Optimized for rapid file pattern matching with Glob
• Powerful regex-based code searching with Grep
• Efficient file reading and bash operations
• Uses the fast Haiku model for quick responses
• Tools available: Glob, Grep, Read, Bash
• Evidence: New agent definition Ds5 at line 428791 in v2.0.11 with agentType: "Explore"

What: Marketplace git operations now provide progress feedback during cloning and pulling

Details:

• Progress callbacks report status during git clone and git pull operations
• Better error messages with specific guidance for common failures (connection issues, timeouts, HTTP errors)
• Improved cleanup and error recovery when marketplace operations fail
• More robust handling of corrupted marketplace cache directories
• Evidence: Functions ky2() and yr4() at lines 377040 and 377088 in v2.0.11 now accept progress callback parameter Q

What: More efficient file modification time checking

Details:

• Introduced dedicated BK() function for consistent timestamp retrieval
• Replaces inline Math.floor(statSync().mtimeMs) patterns throughout codebase
• Evidence: New function BK() at line 441199 in v2.0.11

• Removed legacy teleport session validation functions (replaced by Sessions API implementation)
• Simplified agent color assignment logic
• Removed deprecated usage limit message handling code
• Removed unused dynamic config fetching function
• Streamlined sandbox initialization (removed --sandboxed-bash flag logic in favor of settings-based configuration)
• Refactored permission helper functions for better organization
• Removed legacy git default branch detection code
• Improved error formatting for marketplace/plugin operations with structured error types