Write, refactor, and ship code with an agent that knows your stack.
Most artifacts in the catalog live here: tools that read a codebase, follow its conventions, and make changes you would not be embarrassed to review. Expect language-specific helpers, refactoring workflows, spec-driven development harnesses, and framework-aware assistants for stacks like React, Next.js, Python, Rust, and Go. If you want your agent to stop writing generic code that ignores how your project actually works, start here.
Ranked by GitHub stars. Search to find fast, or page through the full list.
Google Classroom: Manage classes, rosters, and coursework.
Read data from two tabs in a Google Sheet to compare and identify differences.
Interact with GitHub using the gh CLI. Use gh issue, gh pr, gh run, and gh api for issues, PRs, CI runs, and advanced queries.
Google Model Armor: Sanitize a user prompt through a Model Armor template.
Lead a team — run standups, coordinate tasks, and communicate.
Composio powers 1000+ toolkits, tool search, context management, authentication, and a sandboxed workbench to help you build AI agents that turn intent into action.
Add a list of attendees to an existing Google Calendar event and send notifications.
Google Drive: Upload a file with automatic metadata.
Example project for Google GenAI
Google Calendar: Show upcoming events across all calendars.
Gmail: Show unread inbox summary (sender, subject, date).
Example project for Mcp
Gmail: Reply-all to a message (handles threading automatically).
Gmail: Read a message and extract its body or headers.
Composio CLI
Google Drive: Manage files, folders, and shared drives.
Gmail: Watch for new emails and stream them as NDJSON.
Runnable OpenAI examples for Composio tools and Tool Router
Google Workspace Admin SDK: Audit logs and usage reports.
Gmail: Reply to a message (handles threading automatically).
An autonomous agent that conducts deep research on any data using any LLM providers
Google Chat: Send a message to a space.
Google Workspace Events: Subscribe to Workspace events and stream them as NDJSON.
GPT Researcher is an autonomous agent designed for comprehensive online research on a variety of tasks.
Repomix MCP server for AI-powered codebase analysis. Pack local/remote repositories, search outputs, and read files with built-in security scanning. Foundation plugin that enables all Repomix features in Claude Code.
📦 Repomix is a powerful tool that packs your entire repository into a single, AI-friendly file.
A powerful toolkit for coding, providing semantic retrieval and editing capabilities.
📦 Repomix is a powerful tool that packs your entire repository into a single, AI-friendly file.
The fast, Pythonic way to build MCP servers and clients.
TypeScript SDK for programmatic access to qwen-code CLI
Save any thought or content into the brain via one CLI command. The single human-facing entrypoint that replaces "put_page vs commit-then-sync vs autopilot-wait" with one command that just works.
A tool to pack repository contents to single file for AI consumption
Create beautiful slides on the web using Claude's frontend skills
Zero-dependency HTML presentation generator with safe presets, bold template-library styles, PPT conversion, and anti-AI-slop design philosophy.
End-of-story completion review. Reads the story file, verifies each acceptance criterion against the implementation, checks for GDD/ADR deviations, prompts code review, updates story status to Complete, and surfaces the next ready story from the sprint.
Scaffold the test framework and CI/CD pipeline for the project's engine. Creates the tests/ directory structure, engine-specific test runner configuration, and GitHub Actions workflow. Run once during Technical Setup phase before the first sprint begins.
Orchestrate the narrative team: coordinates narrative-director, writer, world-builder, and level-designer to create cohesive story content, world lore, and narrative-driven level design.
Configure the project's game engine and version. Pins the engine in CLAUDE.md, detects knowledge gaps, and populates engine reference docs via WebSearch when the version is beyond the LLM's training data.
Validates a UX spec, HUD design, or interaction pattern library for completeness, accessibility compliance, GDD alignment, and implementation readiness. Produces APPROVED / NEEDS REVISION / MAJOR REVISION NEEDED verdict with specific gaps.
Lightweight design spec for small changes — tuning adjustments, minor mechanics, balance tweaks. Skips full GDD authoring when a system GDD already exists or the change is too small to warrant one. Produces a Quick Design Spec that embeds directly into story files.
Generate design or architecture documents from existing implementation. Works backwards from code/prototypes to create missing planning docs.
First-time onboarding — asks where you are, then guides you to the right workflow. No assumptions.
Orchestrate the polish team: coordinates performance-analyst, technical-artist, sound-designer, and qa-tester to optimize, polish, and harden a feature or area for release quality.
Generates a sprint or milestone retrospective by analyzing completed work, velocity, blockers, and patterns. Produces actionable insights for the next iteration.
Orchestrate the release team: coordinates release-manager, qa-lead, devops-engineer, and producer to execute a release from candidate to deployment.
Concept prototype — validate the core idea is worth designing before writing GDDs. Run right after /brainstorm and /setup-engine. Routes to HTML, Engine, or Paper path based on game type. Produces a throwaway build and a PROCEED/PIVOT/KILL verdict.
Quality review of test files and manual evidence documents. Goes beyond existence checks — evaluates assertion coverage, edge case handling, naming conventions, and evidence completeness. Produces ADEQUATE/INCOMPLETE/MISSING verdict per story. Run before QA sign-off or on demand.
Orchestrate audio team: audio-director + sound-designer + technical-artist + gameplay-programmer for full audio pipeline from direction to implementation.