IconVaultKit

Bitcoin blockchain MCP server providing 17 tools: BTC price/info, mempool fees, transaction details, address lookups, blockchain debug, whale alerts, SEC insider trading tracker, web scraping/summarization, systems theory, game theory, capital flows analysis, and Reddit API (hot/search/trending). SSE endpoint.

A Model Context Protocol (MCP) server that integrates with Jina AI Search Foundation APIs.

AI image generation using various models

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Official MiniMax Model Context Protocol (MCP) server that enables interaction with powerful Text to Speech, image generation and video generation APIs.

AutoSearch exposes a complete systematic-review pipeline as 6 MCP tools — not a thin search wrapper. `autosearch_run_research` launches an async PRISMA 2020 run (multi-source academic search across OpenAlex, Crossref, PubMed, Semantic Scholar, arXiv, ClinicalTrials.gov, DBLP and DOAJ; screening with recorded inclusion/exclusion decisions; evidence synthesis; IMRAD paper with APA references and PRISMA flow counts). Companion tools poll status, fetch the finished paper (markdown/JSON/PDF), verify any DOI live against Crossref, run one-shot evidence searches, and list runs. Citations are verified by construction: every DOI is checked against the Crossref API before it enters a deliverable, and a re-runnable citation-integrity benchmark is published at https://exatoshi.uk/trust (latest: 99/99 DOIs resolved, 0 fabricated, across 23 real deliverables — failures would be published too). Auth is a single `x-api-key` header; free account includes 50 credits. Docs with schemas, JSON examples and credit costs: https://exatoshi.uk/developers

Local guardrail proxy for AI coding agents. Wraps any MCP server (stdio or Streamable HTTP) and blocks destructive tool calls — DROP TABLE, rm -rf, force-push — before they execute. TOFU catalog pinning against rug pulls, plus tool-poisoning and result-injection scanning. Single Rust binary, Apache-2.0.

UnClick is the universal remote for AI: one MCP install that gives any compatible agent 450+ callable endpoints across 60+ integrations, plus persistent cross-session memory.

Job search engine with 500k+ listings across Austria, Germany and Switzerland (alleskralle.com).

Safely schedule Outlook meetings on on-prem Exchange EWS with room-aware slot suggestions, local credentials, preview-confirmed writes, and audit-friendly lifecycle records.

Remote MCP server for geographic data — earthquakes, tsunamis, volcanoes, hurricanes, floods, tornadoes, FX rates, UN SDG, World Factbook, WorldPop. Free discovery + free packs; earthquakes & tsunamis paid via x402 on Base USDC. Start with get_catalog, then get_pack.

### Deterministic Music Theory for Claude, Cursor, and Autonomous AI Agents Large Language Models (LLMs) frequently hallucinate music theory, leading to incorrect notes, false Roman numerals, and broken voice leading. **THIRI** solves this by providing a deterministic, mathematical music-theory engine (pitch-class-set theory over ℤ/12) directly to your AI. It gives AI assistants precise, reproducible harmonic reasoning in milliseconds, allowing them to write correct musical scores, analyze progressions, and generate playable arrangements. #### 🎷 Key Features: * **Chord Analysis (`analyze_chord`):** Parse any symbol (e.g., `Cmaj7/E`, `G7#11`) to retrieve root, quality, intervals, Roman numerals, and diatonic or chromatic harmonic functions. * **Note Resolution (`resolve_chord`):** Resolve chord symbols to spelled notes (enharmonically correct), frequencies (Hz), MIDI numbers, and scale recommendations. * **Voicing Engine (`generate_voicing`):** Generate instrument-ready voicings (rootless, shell, triad, pad, drop-2, drop-3) and calculate voice-leading scores for transitions. * **Reharmonization (`reharmonize`):** Substitute progressions using classic jazz techniques, including Tritone Substitution, ii-V Insertion, Modal Interchange, Coltrane Changes, and Backdoor cadences. *Ideal for developers building AI music assistants, digital audio workstation (DAW) agents, educational theory tools, and automated composition workflows.*

Noise data tools for AI agents — free, no auth, no config. Estimated noise levels for 50 world cities (ranked, WHO-anchored), measured noise-exposure rankings for the 100 largest US cities (federal BTS data), decibel levels of common sounds (CDC/NIOSH-sourced), NIOSH safe-exposure-time math, and info on the Decibel Shield iOS sound meter. Typed structured output on every tool. Data CC BY 4.0 — please cite decibelshield.app. Endpoint: https://decibelshield.app/api/mcp (Streamable HTTP). Docs: https://decibelshield.app/mcp/

Rinkta is a professional-services workspace for agencies and independent teams — tasks, projects, clients, and billable entries in one place. This connector lets your AI assistant search and read your workspace, look up tasks, projects, clients, and entries, and create new tasks and clients on your behalf. Access follows your workspace role: financial data (clients, projects, entries) is only visible to owners, admins, and accountants, and read-only connections never get write access.

Busca oportunidades de voluntariado en España a través de hacesfalta.org. Filtra por provincia, categoría, horario, edad y más. La principal plataforma de voluntariado en España con miles de oportunidades activas.

Search 47,000+ marketing agencies and get AI-matched with fitted agencies, from Pick an Agency. Hosted, public, read-only — no API key required. Tools: search_agencies, match_agencies (the "Get Matched" engine), get_agency. Every result links back to the agency's profile on pickanagency.com.

A production MCP server giving AI agents live Polymarket data as native tools: market search and prices, insider-scored whale trades (each verifiable by on-chain tx hash), trader leaderboards across 10 categories and 4 time windows, and wallet P&L profiles. Hosted on Apify (Streamable HTTP, pay-per-call, no API keys); the only hosted zero-install option among Polymarket MCP servers. Fully async, fail-loud data integrity.

MCP bridge that lets Claude Code delegate heavy tasks to the Antigravity CLI (agy) — purpose-built tools, model routing with fallback, session continuity, and output truncation to save Claude's context and tokens.

Search and fetch icons from 200,000+ icons across 100+ open-source libraries. Supports Material Design, Lucide, Heroicons, Phosphor, Tabler, Font Awesome, and more. No API key required.

Read-only database access with schema inspection

BlenderMCP connects Blender to Claude AI through the Model Context Protocol (MCP), allowing Claude to directly interact with and control Blender. This integration enables prompt assisted 3D modeling, scene creation, and manipulation.

A Model Context Protocol Server connector for Perplexity API, to enable web search without leaving the MCP ecosystem.