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Use the built-in /hooks menu to inspect Claude Code hooks and configure them in settings.json so shell commands run deterministically at lifecycle events like PreToolUse, PostToolUse, and Stop.

Expert husky capability pack for lightweight local quality gates, commit message enforcement, and low-friction contributor workflows.

Integrate with Adyen's payment platform from Claude — create payment sessions and links, cancel/refund payments, manage terminals, webhooks, API credentials, and merchant accounts — with the official Adyen Model Context Protocol server covering Checkout and Management APIs.

MIT-licensed Go implementation of the Model Context Protocol for building MCP servers and clients with tools, resources, prompts, stdio, SSE, Streamable HTTP, hooks, session management, validation, sampling, roots, and tracing.

Open-source Python and TypeScript SDK for building model-driven AI agents with any model provider, MCP tools, streaming, multi-agent patterns, structured output, observability, hooks, guardrails, and production deployment guidance.

PreToolUse Bash guardrail implementing the Claude Code hooks guide drop-table example: exit 2 with stderr feedback when Bash command text contains a case-insensitive DROP TABLE pattern.

MCP server and CLI for Ruflo's multi-agent Claude Code and Codex workflow harness, exposing tools for swarms, agents, memory, hooks, daemons, plugins, federation, and project automation.

Official Resend MCP server for giving Claude and other MCP clients controlled access to email sending, received email, contacts, broadcasts, domains, segments, topics, API keys, and webhooks through stdio or Streamable HTTP.

SessionStart hook that prints a daily Claude Code retro at the top of every session — competency grade (0–100, A–F), 14-day efficiency sparklines, and a year-long contributions heatmap.

Remote MCP server for X and Twitter automation: tweet search, profile timelines, follower export, media workflows, webhooks, and confirmation-gated write actions.

Collection for validating AI-generated UI: computer-use GUI QA skill, DevTools and Playwright MCP servers, accessibility hook, and frontend visual QA command for AI-built interfaces.

Secure Claude Code hooks in shared repositories: version-control hook configs, code review for PreToolUse and PostToolUse scripts, least-privilege matchers, secret scanning, and rollback when hook behavior changes.

Source-backed agent that reviews active Claude Code sessions and configuration for security gaps, cross-references the official security guidance, and produces a ranked remediation plan covering permissions, MCP trust, prompt injection, credential handling, and hook safety.

A practical walkthrough of Claude Code channels: how an MCP-server channel pushes messages, alerts, and webhooks into a running session, how to install and enable Telegram, Discord, or iMessage, sender allowlists, and enterprise controls.

An agent prompt for planning an enterprise Claude Code rollout via server-managed settings: permission deny lists, disableBypassPermissionsMode, allowManagedPermissionRulesOnly, managed MCP allow/deny, and forceRemoteSettingsRefresh fail-closed startup.

A practical walkthrough of least-privilege permission design in the Claude Agent SDK. Learn the evaluation order (hooks → deny → mode → allow → canUseTool), how allowedTools and disallowedTools differ, the six permission modes, and how to lock an agent to a fixed tool surface with dontAsk.

A practical decision guide for choosing between Claude Code subagents, skills, slash commands, hooks, settings, and MCP servers. Pick the smallest extension surface that matches the workflow, risk, and sharing model.

A source-backed safety checklist for introducing Claude Code hooks with scoped events, minimal authority, reviewable commands, clear ownership, and a rollback path.

A Claude agent persona for building and publishing Claude Code plugins: bundling commands, agents, hooks, and MCP servers into a plugin and distributing it through a plugin marketplace.

A PostToolUse hook that reminds you to enable native query logging for PostgreSQL, Prisma, Sequelize, and TypeORM, and flags possible N+1 patterns when you edit SQL or data-access files.

A Claude Code SessionEnd hook that scans a project for dead code and writes a report to .claude/reports. It runs available tools per language: ESLint and Knip for JS/TS, autoflake or pylint for Python, Knip for unused npm dependencies, ripgrep for unreferenced src files, and jq to flag zero-coverage files.

Comprehensive Docker image vulnerability scanning with layer analysis, base image recommendations, and security best practices enforcement. This PostToolUse hook automatically scans Docker images for vulnerabilities when Dockerfiles are modified, providing real-time security validation during development.

Automated documentation coverage analysis with missing docstring detection, API documentation validation, and completeness scoring. This PostToolUse hook automatically checks documentation coverage when code files are modified, providing real-time documentation quality validation during development.

Automated accessibility testing and compliance checking for web applications following WCAG 2.1 and WCAG 2.2 guidelines. This hook automatically runs accessibility scans on HTML files after they are written or edited, using axe-core for comprehensive WCAG compliance testing.

Automatically formats code files after Claude writes or edits them using industry-standard formatters including Prettier 3.6.2+ (JavaScript/TypeScript/Web), Black or Ruff (Python), gofmt (Go), and rustfmt (Rust).

Automatically creates timestamped backups of files before modification to prevent data loss. This hook runs before file editing operations (Edit, Write, Multiedit) and creates versioned backups in a centralized .backups directory with ISO 8601-compliant timestamps including nanoseconds for collision prevention.

Validates AWS CloudFormation templates for syntax errors and best practices using cfn-lint v1.40.4+ and AWS CLI v2.27.54+.

A Stop hook that syncs your changed files to cloud storage when a Claude Code session ends, using rclone to push to S3, Google Cloud Storage, or any of its 70+ supported backends.

A Claude Code hook that flags files exceeding complexity thresholds after you edit them — estimating cyclomatic complexity, line and function counts, and nesting depth (via ESLint's complexity rule and Radon).

Detects unused CSS selectors when stylesheets are modified to keep CSS lean using PurgeCSS, PostCSS, and content analysis. This hook runs on CSS/SCSS file write/edit operations and analyzes stylesheets to identify unused selectors, generate optimized output, and report before/after size metrics.