MCP Prompt Library

<p align="center"> <h1 align="center">MCP Prompt Library</h1> <p align="center"> <strong>110+ curated prompts, workflows, and coding standards for AI-assisted development</strong> </p> </p>

<p align="center"> <a href="LICENSE"><img src="https://img.shields.io/badge/license-MIT-blue.svg" alt="License"></a> <a href="https://nodejs.org"><img src="https://img.shields.io/badge/node-%3E%3D18.0.0-brightgreen.svg" alt="Node.js"></a> <a href="https://modelcontextprotocol.io"><img src="https://img.shields.io/badge/MCP-compatible-purple.svg" alt="MCP Compatible"></a> <img src="https://img.shields.io/badge/tests-147%20passed-success.svg" alt="Tests"> </p>

<p align="center"> <a href="#quick-start">Quick Start</a> • <a href="#features">Features</a> • <a href="#mcp-server">MCP Server</a> • <a href="#library-contents">Library</a> • <a href="#integrations">Integrations</a> </p>

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Why This Exists

AI assistants are powerful, but they're only as good as the prompts you give them. Most developers:

• Repeat the same prompts across projects
• Forget effective prompts they used before
• Struggle to compose complex multi-step workflows
• Lack consistency in AI-assisted development patterns

MCP Prompt Library solves this by providing:

What	How
110+ battle-tested prompts	Organized by development phase (planning, development, quality, operations, performance, maintenance, devex, security, evals)
MCP server with 15 tools	Direct integration with Claude, OpenCode, Cursor, and any MCP-compatible client
Smart suggestions	AI recommends prompts based on what you're doing
Workflow chains	Multi-step guided processes for features, bugs, refactoring, security
Composable snippets	Mix modifiers like ultrathink + security-first on any prompt

---

Quick Start

📦 Usage as npm Package (Best for Developers)

Install the library to use prompts programmatically in your own tools:

npm install @esreekarreddy/ai-prompts

import {
  getPrompt,
  searchPrompts,
  composePrompts,
} from "@esreekarreddy/ai-prompts";

// 1. Get a specific prompt
const prd = getPrompt("prd-generator");
console.log(prd.content);

// 2. Search for prompts
const securityPrompts = searchPrompts("security");

// 3. Compose a custom prompt with modifiers
const complexTask = composePrompts([
  "prd-generator",
  "ultrathink",
  "security-first",
]);

🖥️ Usage as MCP Server (Best for Cursor/Claude)

1. Clone & Build

git clone https://github.com/esreekarreddy/mcp-prompt-library.git
cd mcp-prompt-library/mcp-server
npm install && npm run build

2. Configure Your AI Tool

See Integrations for your specific tool (OpenCode, Claude Desktop, Cursor).

3. Start Using

Once connected, your AI assistant has access to all prompts:

"suggest prompts for what I'm doing"
"get the PRD generator prompt"
"start the new-feature chain"
"compose prd-generator with ultrathink"

---

Features

Smart Intent Detection

Tell your AI what you're doing, and it suggests the right prompts:

You Say	It Suggests
"I need to build a new feature"	PRD generator, new-feature chain
"Stuck on a bug"	Deep debugger, debugging skill, bug-fix chain
"Security review before launch"	Security audit, security-hardening chain
"This code is a mess"	Code cleaner, refactoring skill, refactor chain
"Complex architecture decision"	Megathink modifier, senior-engineer persona

Workflow Chains

Multi-step guided workflows for complex tasks:

Chain	Steps	Use Case
new-feature	7	From PRD to deployment
bug-fix	7	Systematic debugging to resolution
refactor	6	Safe refactoring with verification
security-hardening	7	Comprehensive security review
production-launch	7	Pre-launch checklist to deployment

# Start a chain
node dist/cli.js chains           # List available chains
start_chain chain="new-feature"   # Via MCP tool

Composable Prompts

Combine any prompts with modifiers:

# CLI
node dist/cli.js compose prd-generator ultrathink security-first

# MCP Tool
compose_prompt items=["prd-generator", "ultrathink", "security-first"]

Quick Modifiers

Instant prompt enhancers:

Modifier	Effect
ultrathink	Deep analysis with extended reasoning
megathink	Maximum thinking for architecture decisions
critique	Harsh, unfiltered feedback mode
debug	Systematic debugging approach
plan	Planning mode - no code yet
secure	Security-focused review
simplify	Explain like I'm 12

---

MCP Server

The MCP (Model Context Protocol) server exposes 15 tools to your AI assistant:

Library Tools

Tool	Purpose
get_prompt	Fetch any prompt by name (fuzzy matching works)
search_prompts	Search library by keywords
suggest_prompts	Smart suggestions based on your intent
enhance_prompt	Analyze request and suggest approach + relevant prompts
save_to_library	Save new prompts to the library
library_stats	Library statistics
random_prompt	Random prompt for inspiration

Chain Tools

Tool	Purpose
list_chains	View available workflow chains
start_chain	Begin a multi-step workflow
chain_next	Advance to next step
chain_status	View workflow progress
chain_step	Jump to specific step

Utility Tools

Tool	Purpose
compose_prompt	Combine multiple prompts
quick_prompt	Instant one-liner modifiers
detect_context	Analyze project → suggest stack-specific prompts

How It Works

You: "Build a user authentication system"
        ↓
AI calls: suggest_prompts("Build a user authentication system")
        ↓
Returns: security-audit, new-feature chain, auth patterns
        ↓
AI calls: start_chain("new-feature")
        ↓
AI guides you through: PRD → Architecture → Implementation → Testing → Deploy

---

Library Contents

110+ curated resources across 8 categories:

mcp-prompt-library/
├── prompts/          (38) - Copy-paste ready prompts
│   ├── planning/          PRD generator, scope killer, architecture
│   ├── development/       Debugger, code cleaner, tech debt
│   ├── quality/           Security audit, PR reviewer, changelog generator
│   ├── operations/        Observability, runbooks, incident helper, postmortem
│   ├── performance/       Profiler, load test planner, optimization guide
│   ├── maintenance/       Dependency upgrader, migration planner, tech spec
│   ├── devex/             Repo onboarding, CI fixer, codebase explainer
│   ├── security/          Prompt injection audit
│   ├── evals/             Response grader, consistency checker, quality rubric
│   ├── design/            Design system extractor
│   ├── analysis/          Deep debugger
│   ├── agentic/           Context manager, agentic loop, test-driven fix
│   └── system/            Master system prompt for AI setup
├── skills/           (8)  - AI behavior definitions
│   └── code-review, debugging, testing, refactoring, documentation...
├── instructions/     (18) - Reusable system prompts
│   ├── personas/          Senior engineer, security expert, DevOps, UX
│   ├── standards/         TypeScript, React, Python, Go, Rust, FastAPI, Next.js
│   └── workflows/         TDD, PR review, incident response, feature development
├── templates/        (16) - Project scaffolding
│   ├── claude-md/         CLAUDE.md for Next.js, Python, Node.js, CLI tools
│   ├── cursor-rules/      .cursorrules for various stacks
│   ├── copilot/           GitHub Copilot instructions
│   └── docs/              PRD, ADR, API spec, runbook templates
├── chains/           (5)  - Multi-step workflows
│   └── new-feature, bug-fix, refactor, security-hardening, production-launch
├── snippets/         (21) - Composable modifiers
│   ├── modifiers/         ultrathink, megathink, step-by-step, meta-cot
│   ├── output-formats/    JSON, markdown table, checklist, numbered list
│   ├── constraints/       Security first, MVP only, read-only, no external deps
│   └── safety/            Fact-check, citation-required, uncertainty, injection-guard
├── contexts/         (9)  - Reference documentation
│   ├── stacks/            Next.js 14, FastAPI, Prisma
│   ├── patterns/          MCP server patterns, agentic coding
│   └── guides/            API design, error handling
└── examples/         (3)  - Gold-standard samples
    └── PRDs, architecture docs, code reviews

---

Integrations

OpenCode

Add to ~/.opencode/config.json:

{
  "mcp": {
    "ai-library": {
      "type": "local",
      "command": [
        "node",
        "/path/to/mcp-prompt-library/mcp-server/dist/index.js"
      ],
      "enabled": true
    }
  }
}

Claude Desktop

Add to ~/Library/Application Support/Claude/claude_desktop_config.json:

{
  "mcpServers": {
    "ai-library": {
      "command": "node",
      "args": ["/path/to/mcp-prompt-library/mcp-server/dist/index.js"]
    }
  }
}

Cursor

Add to .cursor/mcp.json in your project:

{
  "mcpServers": {
    "ai-library": {
      "command": "node",
      "args": ["/path/to/mcp-prompt-library/mcp-server/dist/index.js"]
    }
  }
}

VS Code + GitHub Copilot

Copy the prompt files to your workspace:

cp -r .github/prompts /path/to/your-project/.github/prompts

---

CLI Usage

Use the library directly from your terminal:

cd mcp-server

# Get a specific prompt
node dist/cli.js get prd-generator

# Search prompts
node dist/cli.js search "security"

# Get AI-powered suggestions
node dist/cli.js suggest "I need to refactor this messy code"

# Combine prompts
node dist/cli.js compose prd-generator ultrathink step-by-step

# View workflow chains
node dist/cli.js chains

# Library statistics
node dist/cli.js stats

# Random prompt for inspiration
node dist/cli.js random

---

Development

cd mcp-server

npm install        # Install dependencies
npm run build      # Build TypeScript
npm run test       # Run tests (114 tests)
npm run dev        # Watch mode
npm run typecheck  # Type checking only

Architecture

• TypeScript - Full type safety
• Vitest - 114 tests with fast execution
• Zod - Runtime validation for configs
• chokidar - Hot-reload when library files change
• MCP SDK - Model Context Protocol integration

---

Contributing

See CONTRIBUTING.md for guidelines.

Ideas for contributions:

• Add prompts that worked well for you
• Add workflow chains for common tasks
• Add coding standards for new languages/frameworks
• Improve existing prompts with better examples

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License

MIT - see LICENSE

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Acknowledgments

Built with the Model Context Protocol by Anthropic.

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<p align="center"> <strong>Your AI is only as good as your prompts. Keep them polished.</strong> </p>