"Techniques for improving prompt effectiveness" matching MCP servers:

• llm-prompt-optimizer

  Divyesh-freelance

  A

  license

  -

  quality

  C

  maintenance

  A deterministic prompt optimization middleware for AI coding agents that preserves intent, compresses context, and detects drift, available as an MCP server with tools for optimize_prompt, classify_prompt, and more.

  Last updated 2026-04-28

  MIT

• mcp-prompt-optimizer

  nivlewd1

  F

  license

  -

  quality

  D

  maintenance

  MCP server for professional prompt engineering and agentic scaffolding, with cloud and local optimization.

  Last updated 2026-04-13

  2

• Prompt Learning MCP Server

  curiositech

  F

  license

  -

  quality

  D

  maintenance

  Provides stateful prompt optimization using research-backed techniques like APE and OPRO, learning from historical performance data via a vector database. It enables users to automatically refine prompts, retrieve high-performing examples, and track performance analytics through iterative feedback.

  Last updated 2025-12-16

  3

• Agent Prompt Injection

  CSOAI-ORG

  A

  license

  B

  quality

  B

  maintenance

  WAF for AI agents — block prompt injection before it reaches the LLM.

  Last updated 2026-06-20

  5

  MIT

• Prompt Cleaner MCP Server

  dacebt

  A

  license

  C

  quality

  D

  maintenance

  Enables cleaning and sanitizing prompts through an LLM-powered tool that removes sensitive information, provides structured feedback with notes and risks, and normalizes prompt formatting. Supports configurable local or remote OpenAI-compatible APIs with automatic secret redaction.

  Last updated 2025-10-16

  4

  1

  MIT

• vibe-prompt-mcp

  saurabhjambure-pixel

  A

  license

  D

  quality

  C

  maintenance

  Fix your vibe coding prompts before they reach the AI. Scores and rewrites across 4 dimensions — no API key, no server, just npx. Now with codebase-aware context injection for design, database, API, auth, testing, and state management.

  Last updated 2026-04-03

  2

  7

  MIT

• mcp-prompt-engine

  vasayxtx

  A

  license

  -

  quality

  C

  maintenance

  MCP server for managing and serving dynamic prompt templates using elegant and powerful text template engine. Create reusable, logic-driven prompts with variables, partials, and conditionals that can be served to any compatible MCP client like Claude Code, Claude Desktop, Gemini CLI, etc.

  Last updated 2026-03-30

  18

  MIT

• MCP Prompt Cleaner

  dacebt

  A

  license

  -

  quality

  D

  maintenance

  Enhances and cleans raw prompts using AI to make them more clear, actionable, and effective. Provides quality assessment, suggestions, and supports both general and code-specific optimization modes.

  Last updated 2025-10-16

  1

  MIT

• MCP Prompt Manager

  CarlLee1983

  A

  license

  -

  quality

  C

  maintenance

  Git-driven MCP server that manages and provides prompt templates with Handlebars support, enabling teams to collaborate on and version-control reusable, dynamic prompts across AI editors like Cursor and Claude Desktop.

  Last updated 2026-03-02

  ISC

• MCP Prompt Template Selector

  Vadimber2

  F

  license

  -

  quality

  D

  maintenance

  Provides AI-powered selection and generation of specialized system prompts from a database of over 66 templates for Claude Code. It uses semantic search to find the best matching template and can adapt it to fit specific user tasks and contexts.

  Last updated 2026-01-22

• QR for Agent

  benswel

  A

  license

  A

  quality

  B

  maintenance

  Dynamic QR code platform for AI agents. Create, customize, and track QR codes without regenerating images. 37 tools covering 11 QR types (URL, vCard, WiFi, event…).

  Last updated 2026-06-09

  37

  2

  MIT

• MCP for Flarum

  linkrobins

  F

  license

  A

  quality

  A

  maintenance

  Provides MCP-compatible AI clients with full access to a Flarum forum's API, enabling reading, searching, creating discussions, replying, moderation, and management of users, tags, and groups.

  Last updated 2026-07-07

  15

  2

• MCP Server for Splunk

  deslicer

  A

  license

  A

  quality

  B

  maintenance

  Enables AI agents to interact seamlessly with Splunk environments through 20+ tools for search, analytics, data discovery, administration, and health monitoring. Features AI-powered troubleshooting workflows and supports multiple Splunk instances with production-ready security.

  Last updated 2026-07-20

  53

  27

  Apache 2.0

• claude-debugs-for-you

  jasonjmcghee

  A

  license

  -

  quality

  C

  maintenance

  Enable Claude (or any other LLM) to interactively debug your code (set breakpoints and evaluate expressions in stack frame). It's language-agnostic, assuming debugger console support and valid launch.json for debugging in VSCode.

  Last updated 2025-12-20

  7

  512

  MIT

• mcp-for-metabase

  DominikPollok

  A

  license

  -

  quality

  B

  maintenance

  A safety-gated Python MCP server for Metabase that lets MCP clients and agents inspect Metabase, run governed queries, and create or maintain dashboards, cards/questions, collections, snippets, permissions, and other Metabase assets through the Metabase REST API.

  Last updated 2026-07-11

  GPL 3.0

• Chain of Draft Prompt Tool

  brendancopley

  A

  license

  -

  quality

  C

  maintenance

  Transforms prompts into Chain of Draft (CoD) or Chain of Thought (CoT) format to enhance LLM reasoning quality while reducing token usage by up to 92.4%, supporting multiple LLM providers including Claude, GPT, Ollama, and local models.

  Last updated 2025-09-08

  27

  19

  MIT

• gef-mcp-for-ctf

  guaidao2

  F

  license

  -

  quality

  C

  maintenance

  GDB Enhanced Features MCP server for remote debugging and CTF exploitation with 41 specialized tools including ROP search, format-string detection, and memory patching.

  Last updated 2026-07-07
• 

  Langfuse Prompt Management MCPofficial

  langfuse

  A

  license

  -

  quality

  D

  maintenance

  Facilitates access and management of Langfuse prompts through the Model Context Protocol, enabling prompt discovery, retrieval, and integration within clients like Claude Desktop and Cursor.

  Last updated 2025-02-16

  167

  MIT

• TypeScript Prompt MCP Server

  gpaul-mcp

  A

  license

  -

  quality

  D

  maintenance

  Provides pre-defined prompt templates for AI assistants to generate comprehensive plans for TypeScript projects, API architectures, and GitHub workflows.

  Last updated 2025-03-19

  4

  2

  MIT

• MCP-Server-for-ISO27001

  Sushegaad

  A

  license

  -

  quality

  B

  maintenance

  Turn Claude into an ISO 27001 compliance assistant - controls, risk register, policies, evidence tracking, SoA generation, and full audit workflows in one local encrypted MCP server.

  Last updated 2026-07-12

  156

  24

  MIT