🧰 Claude Code Toolkit

A curated collection of agents, skills, MCPs, hooks, loops and settings to supercharge your Claude Code — each explained clearly, with a ready-to-copy install command.

Agent

Frontend Developer

Builds responsive interfaces, components, and screens with a focus on UX and accessibility.

Frontend↓ 18,459
Agent

Code Reviewer

Runs thorough code reviews covering quality, security, and best practices before you merge.

Code Quality↓ 14,389
Agent

Backend Architect

Designs APIs, services, and backend structure with scale and maintainability in mind.

Backend↓ 10,958
MCP

Context7

Brings up-to-date library documentation straight into Claude Code's context.

Development↓ 7,665
Agent

Debugger

Investigates bugs, errors, and unexpected behavior until it finds the root cause.

Debugging↓ 6,369
Hook

Simple Notifications

Sends desktop notifications when Claude Code finishes or needs you.

Notifications↓ 4,824
Agent

Security Auditor

Hunts for vulnerabilities, misconfigurations, and security risks across your code and infrastructure.

Security↓ 4,576
MCP

Memory

Gives Claude Code persistent memory to recall information across sessions.

Productivity↓ 3,792
Agent

AI Engineer

Designs and ships end-to-end AI systems, from model to deployment and monitoring.

AI↓ 3,673
Setting

Performance Optimization

Cuts cost and speeds up replies by capping output tokens and turning off non-essential features.

Performance↓ 3,376
Agent

Documentation Expert

Creates and updates clear technical documentation, from READMEs to API references.

Documentation↓ 3,169
Skill

Word Documents (DOCX)

Create, read and edit .docx files with professional formatting, tables and images.

Documents↓ 2,746
MCP

PostgreSQL

Connects Claude Code to PostgreSQL databases to query and explore data.

Database↓ 2,360
MCP

Fetch

Lets Claude Code fetch web content and consume external APIs.

Web↓ 2,359
Skill

PowerPoint Presentations (PPTX)

Create, read and edit .pptx presentations, from slides built from scratch to decks from templates.

Documents↓ 2,253
MCP

Supabase

Connects Claude Code to your Supabase project to work with the database and data.

Database↓ 2,120
Skill

Excel Spreadsheets (XLSX)

Open, edit and create .xlsx and .csv spreadsheets with formulas, formatting and charts.

Documents↓ 2,058
Agent

Performance Engineer

Finds and eliminates performance bottlenecks across apps, databases, and infrastructure.

Performance↓ 1,971
Skill

Content Creator

Creates SEO-optimized marketing content with a consistent brand voice.

Marketing↓ 1,640
Agent

Data Scientist

Analyzes data, tests hypotheses, and builds models to turn numbers into decisions.

Data↓ 1,586
Hook

Lint on Save

Runs the linter automatically whenever a file is edited.

Quality↓ 1,565
Agent

Database Optimizer

Analyzes slow queries, indexes, and performance to make your database faster.

Data↓ 1,542
MCP

Filesystem

Gives Claude Code secure access to the files and folders you allow.

Productivity↓ 1,443
Setting

Development Mode

Unlocks the usual dev tools while keeping guardrails against dangerous actions.

Permissions↓ 1,442
Agent

Test Automator

Writes and organizes automated tests to raise coverage and confidence in your code.

Testing↓ 1,433
Agent

Cloud Architect

Designs scalable, resilient cloud infrastructure with costs kept under control.

Cloud↓ 1,430
Hook

Smart Formatting

Formats code automatically after each edit, picking the right formatter per language.

Quality↓ 1,345
Setting

Allow npm Commands

Permits the npm lint, test, build, and start scripts without manual approval.

Permissions↓ 1,247
Hook

Run Tests After Changes

Runs quick tests automatically after each code edit.

Testing↓ 807
Setting

Allow Git Operations

Permits common git commands without approving each one manually.

Permissions↓ 746
MCP

MySQL

Connects Claude Code to MySQL databases to access and manage data.

Database↓ 737
Skill

Web Design Guidelines

Reviews your interface code against UI, UX and accessibility best practices.

Design↓ 721
Hook

Dangerous Command Blocker

Stops catastrophic shell commands and protects critical paths before they run.

Security↓ 545
Hook

Secret Scanner

Detects hardcoded API keys and credentials in your code before the commit.

Security↓ 531
Setting

Disable Telemetry

Turns off Claude Code telemetry to protect privacy.

Privacy↓ 522
Hook

Backup Before Edit

Creates a timestamped copy of a file before each edit.

Security↓ 448
MCP

Playwright

Gives Claude Code the power to automate browsers with Playwright.

Automation↓ 397
Setting

Bash Command Timeouts

Sets the time and output limits for running bash commands.

Environment↓ 396
Hook

Conventional Commits

Validates every commit message against the conventional format before the git push happens.

Git↓ 338
Skill

PDF Processing

Read, edit, merge, split and extract data from PDF files right inside Claude Code.

Documents↓ 333
Agent

Refactoring Specialist

Rewrites complex, duplicated code into something clean without changing its behavior.

Code Quality↓ 332
MCP

Notion

Connects Claude Code to the Notion API to read and update pages and databases.

Productivity↓ 329
Agent

DevOps Engineer

Handles pipelines, deploy automation, and infrastructure for faster, more reliable releases.

DevOps↓ 323
Hook

Auto Git Add

Stages every file the agent edits or creates in git.

Git↓ 313
MCP

Firecrawl

Gives Claude Code the ability to scrape and extract web content with Firecrawl.

Web↓ 261
Setting

Privacy-Focused Profile

Turns off telemetry, error reporting, and non-essential network traffic.

Privacy↓ 260
Agent

Prompt Engineer

Writes, refines, and tests prompts to get better, more consistent answers from AI models.

AI↓ 257
MCP

Stripe

Lets Claude Code interact with the Stripe API for payments and billing.

Payments↓ 231
Hook

Prevent Direct Push

Blocks direct pushes to protected branches like main and develop.

Git↓ 230
Setting

MCP Server Timeouts

Sets the startup and tool-execution time limits for MCP servers.

MCP↓ 217
Hook

Validate Branch Name

Ensures new branches follow the Git Flow naming convention before checkout.

Git↓ 191
MCP

Sentry

Connects Claude Code to Sentry to investigate application errors and issues.

Development↓ 188
Skill

SEO Optimization

Boosts search engine visibility with technical SEO, on-page work and structured data.

Marketing↓ 188
Skill

Code Review

Reviews pull requests covering security, performance, testing and code design.

Quality↓ 174
Setting

Disable Risky MCP Servers

Turns off specific MCP servers that may carry security risks.

MCP↓ 159
Skill

Testing Patterns

Applies Jest testing patterns, factories, mocking strategies and the TDD cycle.

Quality↓ 153
Skill

Web Performance Optimization

Speeds up loading and responsiveness with a focus on Core Web Vitals.

Performance↓ 147
Setting

Deny Sensitive Files

Stops Claude from reading secret-bearing files like .env and credentials.

Permissions↓ 144
Skill

Research Engineer

Tackles problems with scientific rigor, a focus on correctness and precise implementation.

Research↓ 137
Skill

Accessibility (a11y)

Audits and improves web accessibility following the WCAG 2.1 guidelines.

Quality↓ 101
Skill

SQL Expert

Writes and optimizes advanced SQL, with query tuning and data modeling.

Database↓ 81
Skill

Smart Commits

Analyzes your changes and writes semantic commits that explain the why, not just the what.

Git↓ 77
Hook

Console Log Cleaner

Warns about console.log when editing files on production branches.

Quality↓ 76
Hook

Desktop Notification on Stop

Notifies your desktop when Claude Code finishes responding, once per response.

Notifications↓ 70
MCP

GitHub (Official)

Connects Claude Code to GitHub to work with repositories, issues, and pull requests.

Development↓ 68
Setting

Custom Model

Overrides the default model and sets a fast helper model for lightweight tasks.

Model↓ 66
Setting

Use the Haiku Model

Configures Claude Code to use the faster, cheaper Claude Haiku model.

Model↓ 63
Setting

Read-Only Mode

Limits Claude to reading and analyzing code, blocking edits and command execution.

Permissions↓ 62
Hook

Env File Protection

Stops Claude Code from writing to .env files and leaking secrets by accident.

Security↓ 57
Setting

7-Day Retention

Cuts how long conversation transcripts are kept down to 7 days.

Privacy↓ 57
Setting

Use the Sonnet Model

Configures Claude Code to use the Claude Sonnet model by default.

Model↓ 55
Hook

Change Logger

Records every file change the agent makes into a CSV file.

Monitoring↓ 45
MCP

Redis

Connects Claude Code to Redis databases to query and manage in-memory data.

Database↓ 32
MCP

MongoDB (Official)

Connects Claude Code to MongoDB databases and Atlas clusters to query collections.

Database↓ 19
Skill

Debugging Strategies

Turns bug hunting into a methodical process built on hypotheses and experiments.

Quality↓ 18
Loop

Adversarial Review Loop

Has a second, independent model review every change before merge, requiring two reviewers to agree.

Engineering↓ 0
Loop

Anti-Spin Build Loop

Builds toward a machine-checkable contract and stops itself the moment it detects it is spinning in place.

Engineering↓ 0
Loop

Build-Test-Fix Loop

Builds the next item on the plan, runs tests, typecheck and lint, and feeds every failure back as the next instruction until the build is green.

Engineering↓ 0
Loop

Builder-Reviewer Loop

Passes code between a builder and an independent reviewer until the review has no blocking findings and tests pass.

Engineering↓ 0
Loop

Completion Contract Loop

Defines what "done" means and what evidence proves each requirement before starting, then refuses to claim success without that proof.

Engineering↓ 0
Loop

Devil's Advocate Loop

Adversarially challenges a design or decision until every serious objection is resolved or explicitly accepted.

Evaluation↓ 0
Loop

Docs Sweep Loop

Keeps documentation aligned with the current codebase and opens a reviewable pull request on every pass.

Engineering↓ 0
Loop

Five-Minute Maintainer Loop

Every few minutes while you work, makes one small verified repository improvement: one change, one commit.

Engineering↓ 0
Loop

Goal Refiner Loop

Turns a vague request into a precise goal (end state, how to verify, what not to touch, and the stop condition), then executes.

Engineering↓ 0
Loop

Human Approval Loop

Runs the task, then pauses and sends approve, revise, or skip before anything ships, with your approval as the stop condition.

Evaluation↓ 0
Loop

Nightly Changelog Loop

Updates the changelog every night with user-relevant changes and notifies the team when it ships.

Operations↓ 0
Loop

Overnight PR Routine

A nightly routine that works your open PRs: auto-fixes broken builds, answers review comments in an isolated worktree, and rebases stale branches while you sleep.

Operations↓ 0
Loop

Performance Budget Loop

Profiles and optimizes pass after pass until the app stably meets a defined performance budget.

Engineering↓ 0
Loop

Production Error Sweep Loop

Triages production errors, finds the root cause, ships a tested fix, and repeats until the high-severity queue is clean.

Engineering↓ 0
Loop

Quality Streak Loop

Runs realistic scenarios and fixes failures until the suite passes N times in a row, with no regressions.

Evaluation↓ 0
Loop

Repository Cleanup Loop

Recovers valuable unmerged work and prunes stale branches and PRs until the repository is tidy.

Engineering↓ 0
Loop

Test Coverage Loop

Adds meaningful tests pass after pass until the suite reaches a target coverage and stays green.

Engineering↓ 0
Loop

Ticket-to-PR Loop

Converts open bugs and issues into verified, review-ready pull requests, one ticket per pass.

Engineering↓ 0