MCP server directory

Terminal, filesystem, and background-job tools for Claude Desktop on Linux/macOS. Zero npm deps, pure Node.

Streams real-time cryptocurrency liquidation events from Binance.

Chemistry toolbox computed from authoritative data: molecular weight / molar mass of any formula (nested groups, isotope labels, propagated NIST uncertainties, percent composition), isotope-distribution mass spectra (m/z peaks for a given charge), and name⇆formula lookup with isomer resolution. Element masses from the NIST Atomic Weights and Isotopic Compositions database; offline and deterministic, with an optional on-by-default online fallback (PubChem/Wikidata/EPA CompTox) that can be disabled. `uvx mcp-molecules`.

Generate PDF, JSON & UBL invoices in 11 languages (Arabic RTL, Japanese, Hindi, Cyrillic) from AI agents. Free tier, no key needed for JSON totals.

> Add the Codex documentation MCP server to your AI coding tools for instant access to API docs. The Codex documentation is available as a Model Context Protocol (MCP) server. Adding it to your AI coding tool lets it search and reference the Codex API docs directly, so you can get accurate answers without leaving your editor. Once connected, your AI tool can search the full Codex API documentation — including queries, subscriptions, types, and guides. It will automatically reference the docs when you ask questions about the Codex API or need help writing queries.

5 tools · balances, Build real-time subscriptions

Official MCP server for [dbt (data build tool)](https://www.getdbt.com/product/what-is-dbt) providing integration with dbt Core/Cloud CLI, project metadata discovery, model information, and semantic layer querying capabilities.

6 tools · generate_model_yaml, get_all_models

Generate crypto QR codes (BTC, ETH, SOL, USDC, USDT, EURC) and manage payment sessions from Claude Desktop or any MCP client. Non-custodial, free.

Access the time in any timezone and get the current local time

Human-in-the-loop approval inbox for AI agents. An agent submits a proposed action (send email, post comment, run a command) via `impri_push_action`, a human approves, rejects, or edits it from a web, mobile, or Slack/Discord/Telegram inbox, and the agent only proceeds on an approved decision. The gate is a data dependency, not a prompt. Full audit trail, self-hostable (MIT, Docker Compose). `npx @impri/mcp`

Russian counterparty due diligence — INN/OGRN lookup against EGRUL/EGRIP, bankruptcy registry (EFRSB), tax debts (Transparent Business), FSSP enforcement proceedings, and arbitration courts (KAD). Aggregated verdict with risk flags and recommendations. No API key required (public Federal Tax Service data).

The TikTok MCP integrates TikTok access into Claude AI and other apps via TikNeuron.

Word search generator, crossword generator, and sudoku generator + solver in one local-first puzzle generator CLI — with printable PDF worksheets, starter word banks, verifiable LLM evals, and bundled agent skills. From the makers of puzzletide.com. Ask a language model to write a word search and you get a grid where half the words are broken; ask it for a sudoku and you usually get one with several solutions, or none. Grids are exactly the kind of output LLMs are bad at and deterministic code is good at.

6 tools · eval_generate, puzzle_crossword_generate

Check real-time operational status of 114+ cloud services and APIs (AWS, GitHub, Stripe, OpenAI, Vercel, etc.) directly from AI assistants. Published on npm.

Security MCP for vibe coding with 330 rules and 29 tools. Purpose-built for AI-generated code — scans Next.js, Supabase, Clerk, Stripe, Prisma, Hono, GraphQL, and 25+ modules. Cross-file taint analysis, host security audit, auto-fix, SARIF export, pre-commit hook, and CVE version detection. Zero config, runs locally.

AI agent marketplace with x402 micropayments. Discover, execute, and pay agents per-request via MCP with USDC on Base.

Email inbox API MCP server for AI agents to receive, search, and send mail through hosted or local Sendmux Product MCP.

A Rust-based MCP server bridging Wazuh SIEM with AI assistants, providing real-time security alerts and event data for enhanced contextual understanding.

7 tools for French open-data building permits (Sitadel, 311k rows, ~2M permits/year, Etalab license). Search, details, DVF transactions cross-ref, real estate dealer opportunity score, PLU urban zoning, BRGM natural and technological risks, and a Vue 360 composite that fans out 6 sub-fetches in one tool call. Powered by [permisapi.fr](https://permisapi.fr). Plan Free covers basic search and details, Pro+ unlocks the enrichments. Install: `pip install permisapi-mcp`.

Teamfight Tactics champion, trait, item, and augment reference. 8 tools with full Set 16 data from CommunityDragon, including synergy lookups, item recipes, and rolling odds.

Browse, recommend, and **buy authentic Chinese tea** from hou-tea.com using **USDC stablecoin via the x402 protocol**. First commerce MCP that ships real on-chain payment intents (delegated to wallet MCPs like `@coinbase/payments-mcp`). 8 tools: browse / recommend / explain / compare / health-filter / payment / order-status / agent-card.

Institutional-grade crypto and US equity orderflow engine for real-time liquidity analysis and institutional alpha.

Regression testing framework for AI agents. Save golden baselines, detect behavioral drift, and block regressions in CI. Works with LangGraph, CrewAI, OpenAI, Claude, and any HTTP API.

[Dida365](https://dida365.com/) (TickTick China) MCP server for AI-powered task management. 13 tools for projects, tasks, tags, and habits with OAuth 2.0 authentication. Compatible with OpenClaw, Claude Desktop, and any MCP client.

Unified GPU inference API with 30 AI services (LLM, image gen, video, TTS, whisper, embeddings, reranking, OCR) as MCP tools. Pay-per-use via x402 USDC or API key credits.

Mobile E2E MCP (40 tools): iOS-simulator control, native UI automation, Maestro flows, React Native debugging (logs/network/state), and WebView DOM inspection. Requires macOS + Xcode.

Generate diagrams from structured JSON across 18 types (architecture, ERD, sequence, flowchart, Gantt…) — native SVG/PNG, no headless browser. Built for LLMs and agents.

96 tools across 21 modules for La Réunion (French overseas region) open data: economy, demographics, geography, transport, health, education, elections, tourism, housing, environment, and more. Powered by data.regionreunion.com and data.gouv.fr. Install: `npx -y mcp-reunion`.

A ledger-cli integration for managing financial transactions and generating reports.

Personal finance calculators — mortgage payments, compound interest, FIRE retirement number, loan comparison, true credit cost, and debt payoff. 8 tools, zero API keys, works with `uvx axiom-calculator-mcp`.

Markdown-first Notion MCP server with 9 composite tools and 39 actions. ~77% token reduction via tiered docs. Auto-pagination and bulk operations.

Official MCP server for Buildable AI-powered development platform [bldbl.dev](https://bldbl.dev). Enables AI assistants to manage tasks, track progress, get project context, and collaborate with humans on software projects.

6 tools · complete_task, create_discussion

One local gateway and manager for all your MCP servers, shared across every AI coding tool (Claude, Cursor, VS Code, Codex, and more). Set up and authenticate each server once; lazy discovery keeps each agent's context small, and keys stay in your OS keychain. No Docker, no cloud.

Design-debugging context for AI agents from a real Chrome: which CSS rule WINS with file:line, blast radius (how many other elements that rule styles) + a scoped-fix selector, WordPress/Elementor origin attribution, interaction timelines, live CSS fix trials, and pixel/alignment/WCAG-contrast audits. No AI inside — deterministic CDP.

Multichain memecoin launchpad across 8 chains (Base, Arb, OP, Polygon, BSC, ETH, Avax, Solana). Tokenize yourself as an oMeme — earn 0.5% creator fee forever + 50% Uniswap V3 LP fees after graduation, from a single LP. $69 bounties. First 100 agents FREE for 60 days. 8 tools: trending tokens, search, quotes, bonding curves, trade simulation, chain info.