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Open Source First·AI-Graded A–F·Updated Hourly·4 Booster Types

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562 boosters for "spec" — AI-graded, open source, ready to install

693 Skills444 Agents692 MCP Servers1196 Prompts

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MCP Server

Mcp Inspector As Mcp Server MCP Server

An MCP server that enables LLMs to inspect, test, and debug other MCP servers, helping developers validate and troubleshoot their MCP implementations. Ideal for MCP developers, AI agents, and anyone building or integrating multiple MCP servers.

by esinecan

mcpmodel-context-protocol

CDCC

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Agent

Creating Custom Agents in AgentVerse

A comprehensive guide for developers to build custom agent types and extend the AgentVerse system with reusable, role-based agents. Ideal for teams looking to create specialized AI agents across multiple projects.

by pepavlin

agent

CCCD

Skill

genesis-site-design

A specialized skill for designing and building credible B2B SaaS marketing websites that balance product positioning with consultancy capability, prioritizing layout systems and information architecture over component libraries. Ideal for founders, marketing teams, and designers building Genesis or similar enterprise-focused platforms.

by ashgar99

skill

Skill

overseer-plan

Converts markdown planning documents into structured Overseer tasks with automatic hierarchy detection, enabling teams to seamlessly transform specifications and design docs into trackable work items. Ideal for product managers, engineers, and technical leads who need to bridge planning and execution.

by nsyout

mcp

Agent

madhu

Madhu is a specialized code reviewer agent for Youth Coach Hub's Next.js/React SaaS platform that performs code reviews, architecture assessments, security audits, and pattern compliance checks. It benefits development teams building or maintaining this specific football coaching application.

by Reesemix123

security

Agent

Frontend-agent

Frontend-agent is an AI development agent specialized in building modern, responsive, component-driven user interfaces with real-time data integration. It helps frontend developers implement features faster while maintaining code quality and accessibility standards.

by business-development-service-account

agent

Prompt

mcp-financial-analyst — System Prompt

mcp-financial-analyst is a specialized system prompt that transforms Claude into an expert financial analyst with access to 68+ RSS feeds for real-time market data and analysis. It benefits financial professionals, traders, and analysts who need AI-assisted market research and decision-making.

cursorrules — Cursor Rules

Cursor Rules provides UI development guidelines for a custom game engine, enforcing coding standards, folder structure, and YouTube-ready visual quality. Developers using Cursor IDE on this specific project will benefit from consistent UI implementation patterns.

by All-Out-Games

cursorrules

Prompt

harry_python_practice — Windsurf Rules

A Windsurf-specific prompt that configures an AI assistant as a senior full-stack engineer for Python practice, with instructions to respond in Chinese and use Python 3.11 with virtual environments.

by MengjieLee

windsurfrules

Agent

Sub-Agent Delegation

Converts deepagents' single `task` tool into individual `AgentTool` instances for cleaner sub-agent delegation in adk-deepagents. Developers building hierarchical multi-agent systems benefit from this more modular approach to agent composition.

jobs

A Rails background jobs specialist agent that helps developers design, implement, and manage ActiveJob and Solid Queue systems with expert guidance on async processing and queue management. Ideal for Rails developers building reliable background job architectures.

by dphaener

Agent

AI Integration Engineer

An agent specialized in integrating multiple AI providers (OpenAI, Anthropic, Google AI) with expertise in prompt engineering, embeddings, RAG implementation, and error handling. Ideal for developers building multi-LLM applications who need standardized integration patterns and fallback strategies.

Germain — Windsurf Rules

A Windsurf prompt that enforces French-language interaction with Cowboy Bebop references and provides detailed specifications for exercise UI design using Bulma. Intended for French-speaking developers building interactive math exercise platforms.

by LeCodeEtMoi

windsurfrules

Agent

lily

lily is a specialized AI agent for C#/.NET code implementation, optimization, and quality assurance in WPF desktop applications, helping developers automate architecture design, performance tuning, and debugging workflows.

by saintiron82

Agent

rex

Rex is a documentation retrieval agent that helps users and other agents quickly find information about project architecture, conventions, and implementation details by searching README.md, CLAUDE.md, and docs/ files.

by RMSantista

aiclaude

Prompt

agentic-flutter-app — System Prompt

A system prompt that enables Claude to act as a color expert assistant, interpreting natural language color descriptions and setting RGB values through a specialized tool in the Colorist desktop app. Useful for developers building agentic color-picking interfaces across multiple platforms.

luna

Luna is a specialized UI/UX agent that helps developers design, review, and improve user interfaces through expert guidance on components, accessibility, responsive layouts, and user interaction patterns. It's ideal for developers building React applications who want professional feedback on their UI code and design decisions.

by saintiron82

reactagent

Prompt

Cursortemplate — Cursor Rules

This Cursor rules booster optimizes React component performance by promoting server-side rendering, lazy loading, and resource efficiency. It's ideal for developers building Next.js/React applications who want to reduce client-side overhead and improve load times.

by shittuay

cursorrules

Agent

ruby-pro

Ruby-pro is an expert agent that helps developers write idiomatic, performant Ruby and Rails code through metaprogramming, optimization, and testing best practices. It's ideal for Ruby developers looking to refactor code, build gems, or master advanced language features.

by xats-org

testingai

Skill

aztec-developer

Aztec Developer is a skill booster providing patterns and best practices for Aztec smart contract development, including workspace setup, contract writing, and testing. It's designed for developers building on the Aztec platform who need structured guidance on development workflows.

by jp4g

testing

Agent

Shane

Shane is a backend developer agent specialized in APIs, databases, and business logic implementation, with deep expertise in DirectoryBolt's Next.js/Supabase architecture for payment processing and customer management.

by Rainking6693

apidatabase

Prompt

opex — System Prompt

A specialized system prompt that transforms Claude into an Operational Excellence Assistant for HR, Finance, and Operations teams, guiding users through policies, workflows, and processes using grounded knowledge base retrieval. Ideal for managers and staff needing practical operational guidance.

LXJNiTgGY — Windsurf Rules

This booster appears to be a Windsurf-specific prompt for managing development rules, but lacks clear purpose and actionable content for developers using the Windsurf platform.

by jiraiY35715A

windsurfrules

Agent

prompt-engineer

A specialized agent that systematically crafts, tests, and optimizes prompts for LLMs through multiple cognitive modes (generative, critical, evaluative, informative) and performance measurement. Ideal for AI engineers, prompt researchers, and developers seeking to maximize LLM output quality.

by Smith-Happens

aillm

CCCD