Claude Code Hooks: Automate Everything Before and After Every Task

Every experienced developer knows the drill: run the linter before committing, check for security vulnerabilities before pushing, format the code before submitting a review. These steps are essential, but they rely on you remembering to do them. Every time. Without exception.

Hooks eliminate that burden entirely.

What Are Hooks?

Hooks are event-driven triggers that execute automatically when specific actions occur in Claude Code. They run before or after defined events — a file save, a commit, a session start, a task completion — and perform predefined operations without any manual intervention.

If you have used Git hooks, the concept is familiar. But Claude Code hooks go much further. They can trigger complex workflows, run multi-step checks, and enforce standards across your entire development process.

The Two Types

Pre-hooks run before an action completes. They act as gates. A pre-commit hook can scan for hardcoded credentials before code ever reaches your repository. A pre-deploy hook can run your test suite before anything goes to production. If the hook fails, the action is blocked.

Post-hooks run after an action completes. They handle follow-up work. A post-save hook can auto-format your code. A post-task hook can generate documentation. A post-session hook can compile a summary of everything that was accomplished.

Real Examples That Save Hours

Auto-Update on Session Start

Every Leopoldo plugin includes an update-checker hook that fires when you start a new Claude Code session. It silently checks whether a newer version of your installed plugins is available, downloads any updates, and notifies you — all before you type your first command. You never run a manual update. You never fall behind on versions.

Security Scanning Before Commit

A pre-commit hook can automatically scan your staged changes for common security issues: exposed API keys, hardcoded passwords, insecure dependencies, SQL injection patterns. If something is found, the commit is blocked with a clear explanation of what needs to be fixed. This happens every time, not just when you remember to run the scanner.

Auto-Formatting on Save

A post-save hook can apply your project's formatting rules every time a file is saved. No more debating tabs versus spaces in code reviews. No more reformatting pull requests after the fact. The code is always formatted correctly because the hook enforces it passively.

Quality Gates on Task Completion

When a complex task finishes — a new feature implementation, a refactoring pass, a bug fix — a post-task hook can automatically run relevant tests, check for regressions, and verify that the output meets predefined quality standards. The verification happens without you asking for it.

Hooks vs. Manual Workflows

The fundamental difference is reliability. Manual workflows depend on human discipline. You have to remember to run the security scan. You have to remember to format the code. You have to remember to check for updates. On a good day, you do all of it. On a busy day, you skip half of it.

Hooks never skip. They never forget. They run the same way every time because they are triggered by events, not by memory. This is especially critical for quality assurance and security — the areas where a single oversight can have serious consequences.

How Leopoldo Plugins Use Hooks

Every Leopoldo plugin ships with hooks pre-configured for its domain. These are not generic automation scripts. They are purpose-built triggers designed by domain experts to enforce the standards that matter for that specific workflow.

The Finance plugins include hooks for data validation and calculation verification. The Consultant plugin includes hooks for deliverable formatting and methodology compliance. The Full Stack plugin includes hooks for code quality, testing, and security scanning.

Combined with specialized agents and orchestrators, hooks complete the automation layer. Agents do the work. Orchestrators route the work. Hooks make sure the work meets the standard — automatically, every time.

Get Started

Leopoldo plugins start at $99 and include everything: agents, orchestrators, and hooks, all pre-configured and ready to use. Every plugin also receives 12 months of live updates delivered silently through the auto-update hook.

Visit leopoldo.ai to explore the full plugin catalog.

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