Cross-IDE Lifecycle Hooks Convergence: Claude Code Prompt/Agent Handlers vs Windsurf/Cursor Shell-Only—Handler Type Is the Key Differentiator

Pixelmojo·medium signal

All three major AI coding environments shipped lifecycle hooks in 2025-2026: Claude Code (PreToolUse, PostToolUse, Stop, SessionStart, Notification, UserPromptSubmit with command/prompt/agent handlers), Windsurf Cascade (12 events with shell handlers), Cursor Automations (event triggers with shell handlers). The critical architectural differentiator is handler type: only Claude Code supports prompt hooks (LLM-based semantic evaluation of actions) and agent hooks (full subagent analysis), enabling semantic policy enforcement that shell-only hooks cannot match. Teams evaluating IDEs for governance-heavy environments should treat handler type—not event count—as the key capability dimension.