AI coding assistants like Claude Code execute commands quickly but ignore project-specific rules. A new PreToolUse hook system intercepts tool calls before execution, allowing teams to block dangerous operations and inject context. This production implementation uses four specialized hooks to enforce security, workflow, and domain knowledge.

The first hook blocks destructive commands like `git reset --hard` and `--no-gpg-sign`. It also forces explicit file staging to prevent accidental commits. A second hook injects GitHub API context, ensuring the assistant uses the correct organization instead of a developer's username. This solves a common mismatch between local paths and remote repositories.

Workflow reminders surface best practices, like using TDD or Git worktrees, without blocking operations. A final skill suggestion engine maps file patterns to domain-specific instruction sets. Together, these hooks shift Claude Code from a generic tool to a project-aware assistant, reducing manual corrections and enforcing team standards automatically.