Global AI chat room · 17 online now Join now
DEVELOPER KIT / 04

MCP Tools | Model Context Protocol Server Directory

Discover, compare and configure open MCP servers that connect AI assistants to web, files, databases, search and developer tools.

Browse serversFind the right building block for your next workflow
Directory overview
180
curated entries
18 topic groupsLive
04 / MCP DIRECTORY

Connect AI to the outside world

Context first, better decisions. Every entry keeps the signal that matters.

CURATED DIRECTORY180 results

pubmed-mcp-server

Remote MCP
Free

Search PubMed/Europe PMC, fetch articles and full text (PMC/EPMC/Unpaywall), citations, MeSH terms.

13.9K starsView details

Naver Search

Remote MCP
Free

Search Naver across news, blogs, books, encyclopedia, cafe posts, Knowledge iN, local places, images, shopping, and professional documents. Returns Korean-language results and Korea-local content that global search engines often miss.

13.3K starsView details

NPM Sentinel MCP

Remote MCP
Free

Provide AI-powered real-time analysis and intelligence on NPM packages, including security, dependencies, performance, and quality metrics. Enable faster and safer package management decisions by integrating with Claude and Anthropic AI. Deliver comprehensive insights such as vulnerability scanning, download trends, and maintenance status to optimize your npm ecosystem.

13.3K starsView details

DuckDuckGo & Felo AI Search

Remote MCP
Free

Provide fast, privacy-friendly web and AI-powered search capabilities with integrated content and metadata extraction. Enhance your AI assistants by enabling comprehensive web scraping without requiring API keys. Optimize performance with caching and secure usage through rate limiting and user agent rotation.

12.7K starsView details

nutribalance-mcp

Remote MCP
Free

Free nutrition tools for AI assistants — calculate TDEE & personalised macros, look up food nutrition data, generate meal plans (standard, vegetarian, vegan, keto, high-protein), fix nutrient deficiencies with food & supplement guidance, and score a day's eating from 0–100.

12.7K starsView details

nist-nvd-mcp-server

Remote MCP
Free

Search and audit NIST NVD CVEs by keyword, severity, CWE, CISA KEV status, and CPE.

12.5K starsView details

cityparity

Remote MCP
Free

cityparity compares two cities on the numbers that actually decide a move. Give it a salary and a family situation and it returns take-home pay, a full cost breakdown (housing, healthcare, childcare, food, transit, travel home, property tax), the equivalent salary you'd need in the target city, and the non-cash deltas people move for: statutory vacation, parental leave, and universal healthcare. It can also rank cities by a composite quality score and look up inbound-worker tax regimes (Italy impatriati, Portugal IFICI, and others). About 165 cities across 69 countries. Free, no API key, hosted Streamable HTTP.

12.4K starsView details

ia-qa.com/mcp llm and RAG testing - Dev/QA toolbox

Remote MCP
Free

IA-QA as an MCP Server Use IA-QA's developer tools to test your llm agents RAG ai tools, directly from Cursor, Claude Desktop, Windsurf, or any AI agent without leaving your IDE. Many classical testing tools too ! Enjoy ! No API key. No signup. Free.

12.3K starsView details

Slack

Remote MCP
Free

Read Slack conversations, threads, and user directories, send messages, and invite users to channels.

12.1K starsView details

Framesail

Remote MCP
Free

Create long-form (faceless YouTube) videos end to end from any MCP client: script, locked character references, storyboard, voiceover, and final video editing — with characters and style held consistent across every shot. Making long-form AI video today means 8+ tabs stitched by hand — an LLM for the script, a voice model, an image model, a video model — with characters drifting between tools and style resetting at every export. Framesail replaces the patchwork: the whole pipeline runs in one place and manages your video's context end to end. Six stages: Style (paste images, videos, or YouTube links and Framesail reverse-engineers the look, voice, and direction), Script (write it yourself or generate it in your narrative style), Reference images (auto-generated for every character, place, and prop), Voiceover (one narrator or many characters, with word-level timing), Storyboard (planned

11.5K starsView details

Coin Railz

Remote MCP
Free

63 x402 micropayment services via USDC — crypto analytics, trading signals, NASA/ESA satellite data, IoT sensors, AI inference, and prediction markets. Coinbase AgentKit compatible. Pay per call with prepaid credits or native on-chain USDC.

11.4K starsView details

ComplianceCheckup

Remote MCP
Free

Free automated privacy grades (A+ to F) for 900+ SaaS tools, plus GDPR, HIPAA, PCI DSS, SOC 2, CCPA, and ADA compliance checklists with source citations.

11.2K starsView details

AI Research Assistant

Remote MCP
Free

The server provides immediate access to millions of academic papers through Semantic Scholar and arXiv, enabling AI-powered research with comprehensive search, citation analysis, and full-text PDF extraction from multiple sources (arXiv and Wiley open-access). - No API key is required.

10.3K starsView details

Polymarket

Remote MCP
Free

Discover and filter Polymarket prediction markets and events by tags, volume, liquidity, and activity. Analyze individual markets with probabilities, market health, and recent trade insights to inform decisions. Track trends across categories to spot opportunities and compare sentiment over time.

10.1K starsView details

Your-Echo-Agent-

Remote MCP
Free

Built by a PR tech publicist, Your Echo Agent delivers truly personalized cold emails tied to LinkedIn campaigns for SaaS, agencies, e-commerce, founders, local businesses, and PR clients — all from Claude, Cursor, Windsurf, or Continue.

10.1K starsView details

Gapup MCP — 270+ Agent-payable AI Tools

Remote MCP
Free

270+ agent-payable C-suite expertises (competitive intel, SEC filings, sanctions multi-jurisdiction, KYC, pentest scope, clinical evidence GRADE-graded, real-estate deals EU-first, ESG, NAICS classifier, patent landscape, research paper Q&A). x402 USDC/EURC micro-payments. Free tier 100 calls/mo, no credit card. Dual-audience (human/agent).

10.0K starsView details

Weather MCP Server

Remote MCP
Free

Retrieve real-time weather information effortlessly for any city. Get accurate weather updates using a simple command or API call without needing an API key. Enhance your applications with reliable weather data from the Open-Meteo API.

10.0K starsView details

lad-lviv-ua

Remote MCP
Free

Lviv (Ukraine) public transport MCP server — live arrivals, vehicle positions, stop discovery, route shapes, and static timetables. No API key required.

9.8K starsView details

social-superpowers

Remote MCP
Free

Live X/Twitter and Reddit research. 10 read-only MCP tools, Google/GitHub sign-in. Free tier.

9.8K starsView details

Developer Utilities

Remote MCP
Free

Streamline technical workflows with a comprehensive suite of data transformation and validation utilities. Convert between diverse formats like JSON, CSV, and Markdown while managing encodings and identifiers efficiently. Enhance productivity by performing complex text analysis, regex testing, and timestamp conversions instantly.

9.7K starsView details

menjometre

Remote MCP
Free

Menjometre is an independent observatory of Catalan public spending. This MCP server gives any LLM client read-only access to the full dataset and the statistical scoring layer built on top of it. ## Coverage - **~19.5 M** grant records from the Registre d'Ajuts i Subvencions de Catalunya (RAISC), 2016–present - **~1.7 M** public procurement contracts from Dades Obertes de Catalunya - **~496 K** beneficiary entities with normalised identities - A **public-figure graph** linking Parlament deputies, Generalitat officials, and the boards of publicly-funded entities - The **Menjometre score** — a statistical indicator flagging concentration and recurrence patterns in public spending ## What the 48 tools cover | Domain | What you can ask | |---|---| | `entities` | Search, profile, network, activity timeline for any funded organisation | | `grants` | RAISC lookups, concentration analysis, purp

9.5K starsView details

backtesting-arena

Remote MCP
Free

Quantitative crypto backtesting & Bitcoin market-regime analytics. 73 MCP tools: honest look-ahead-aware backtest validation with Deflated-Sharpe-Ratio correction, point-in-time 10-indicator Bitcoin cycle scoring, macro-regime composites, Edge-Library filter effects, 22 on-chain BRK series (since 2009), altcoin screener, sentiment, "buy now or wait?" decision-math, conditional historical-analog base rates & live subscriptions. Core outputs are not reproducible from public OHLCV/market-data APIs. Covers crypto plus stocks/ETFs/commodities/forex. Free tier, no credit card.

9.3K starsView details

Exa Search

Remote MCP
Free

Fast, intelligent web search and web crawling. Get fresh information about libraries, APIs, and SDKs.

9.2K starsView details

census-mcp-server

Remote MCP
Free

Query U.S. Census Bureau data, variables, and geography via MCP.

9.0K starsView details
Email