"Free Graph and Network Visualization Tools (No API Key Required)" matching MCP servers:

Machine-native listening platform for C.W.A.'s Straight Outta Crompton - the first album released to machines before humans. The Crompton Network streams the album at playback rate as structured data. Reflect when you're done. Receipts prove you were there.

Enables keyless search and retrieval of millions of openly-licensed Creative Commons images and audio, with ready-to-paste attribution and license-awareness built into every result.

40-tool colour intelligence API for AI agents. Cultural risk, archive-verified colour naming, palette generation, WCAG accessibility, material physics, ecommerce copy, and image generation briefs. 16,682+ named colours across 43 cultural archives.

An MCP server that enables AI assistants to search and retrieve anime figure data, collections, lists, and clubs from MyFigureCollection.net, including partner listings and barcode lookup.

Japanese calendar API for AI agents. Provides Rokuyo, Rekichu, Eto, 24 Solar Terms, and fortune judgments. MCP + REST API.

Enables AI assistants to access South Korean tourism information via the official Korea Tourism Organization API, providing comprehensive search for attractions, events, food, and accommodations with multilingual support.

Enables AI agents to access and interact with the Sefaria database of Jewish texts, including retrieval, search, and related content.

Provides access to the Ghibli Image Generator API for creating Ghibli-style images using OpenAI models. It enables users to generate stylized artwork through the ghibli_generate_image tool.

A server that enables AI models to access Kakao Map features (place search, address lookup, route finding) and Daum search services (web, image, blog, cafe) through Model Context Protocol.

OAuth-protected FastMCP server exposing eight read-only public APIs (currency, weather, art, pets, dictionary, random images, vehicles) via MCP tools, with optional Gemini LLM-based routing for query selection.

A Python MCP server enabling programmatic interaction with Aseprite for pixel art creation and manipulation with features like drawing operations, palette management, and batch processing.

An API that exposes Unsplash image search, listing, and random photo capabilities as MCP tools, enabling AI models like Claude to directly interact with Unsplash's services.

A Model-Client-Protocol server that enables users to search the Gallica digital library of the National Library of France and generate structured sequential research reports with formatted citations and relevant images.

Enables searching documents in Gallica, the digital library of the Bibliothèque nationale de France, and generating structured research reports with citations and images.

MCP server for lyrics.com that enables searching songs by lyrics or title and retrieving full lyrics, with no API key required.

An MCP server for the Internet Archive that enables searching the full text of digitized books, browsing the catalogue, and reading Wayback Machine captures. No API key or configuration required.

Enables full-text search of the Media History Digital Library's digitized entertainment trade press (e.g., Variety, Billboard), returning leaf-level results with keyword-in-context excerpts, no API key required.

MCP server for Anime News Network, enabling search of anime and manga encyclopedia entries, retrieval of details like cast, staff, and episodes, and access to news feeds. No API key or configuration required.

MCP server providing access to Swiss cultural heritage data including ISOS townscapes, Living Traditions, cultural prizes, and press releases from the Federal Office of Culture, with no API key required.

Korean Saju (Four Pillars / 사주명리) birth-chart analysis — 5 free tools: chart, five elements, gyeokguk, yin-yang/climate balance, and classical yongshin candidates. Local stdio server via npx, no API key required.