"A library for 3D graphics on the web - Three.js" matching MCP servers:

An MCP server that gives AI agents clean, token-efficient access to US civic & property data — geocoding, census tracts, Opportunity Zones, ACS demographics, and FEMA flood zones — sourced entirely from free federal open data.

Provides a compact, task-oriented wrapper around the CDISC Library API for discovering, searching, and fetching Biomedical Concepts and SDTM Dataset Specializations.

Provides access to Internet Archive's Open Library metadata, enabling queries about books, authors, and subjects via natural language through the Pipeworx gateway.

Enables searching and retrieving articles, sections, and tags from The Guardian via the Guardian Open Platform API.

Gives AI agents read access to ads running across Meta platforms without an API key, returning full creatives, real landing URLs, and complete platform lists.

MCP server that silently monitors state changes in structured data sources (e.g., government open data) and provides a pull-based channel for AI agents to retrieve real mutations since their last cursor.

Enables AI agents to access US public library data from the federal IMLS Public Libraries Survey, including proximity searches, library system profiles, and statewide statistics.

Enables searching the Wake County Public Library catalog and all NC Cardinal libraries, returning book details including title, author, format, availability status, and direct catalog links.

A Model Context Protocol server that provides semantic search and intelligent access to a comprehensive list of free services and tools for developers.

Provides AI assistants with real-time and historical gold buying condition scores, including current readings, past data, and zone performance since 1971.

Exposes 97 official Shanghai Library open data APIs and the Sou-Yun poetry database (1.99 million poems) as 12 MCP tools, covering genealogy, ancient books, calligraphy, historical buildings, and more. Enables MCP clients to query these datasets using natural language.

MCP server for querying the Central Bank of Brazil's 'Valores a Receber' (amounts to receive) service, providing read-only access to official data through natural language with a hosted server and prepaid credits.

Enables searching the National Library Board Singapore catalogue by title, author, ISBN, or subject, and checking real-time availability of books across library branches.

Provides library visit time recommendations and book recommendations by analyzing real lending data from the Data4Library Open API.

Provides free Chinese A-share stock data including real-time quotes, historical K-lines, market scanning, and multi-factor stock screening via BaoStock and Sina Finance APIs.

Fetches books by genre or subject from the Open Library API without requiring an API key, returning titles, authors, and publication years.

MCP server that resolves postal/ZIP codes to place names, states, and coordinates using Zippopotam.us. Free, no API key required.

Enables real-time domain registration lookups via RDAP, including availability, expiration, and registrar details, with no API key required. Supports natural language queries like 'is example.com available?' or 'when does example.com expire?'.

Enables currency conversion and exchange rate lookups using real ECB reference rates, free and without an API key. Supports natural language queries like 'convert 100 USD to EUR' or 'what's the exchange rate between GBP and JPY?'.

Provides real, official public holiday data for ~100 countries with tools to list holidays for a year and check if a specific date is a holiday. Free, no API key required, powered by Nager.Date.