"Services or tools that don't require a separate API key" matching MCP servers:

Every other colour API tells you what goes together. Colour Memory tells you what it means, where the evidence ends, and what it must not claim. 47,515 hand-researched records, graded A–E, every result cited. 91 specialist tools built for agents that need precision, not guesses. Direct MCP: https://api.colourmemory.com/mcp — no signup, no key for the free tools (10 calls).

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.

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.

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.

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.

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

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.

The MCP server for Divine API's Indian Astrology services, allowing AI assistants to query Vedic astrology data such as Panchang, Kundli, and matchmaking through natural language.

Provides comprehensive access to the ResourceSpace Digital Asset Management API through MCP tools, resources, and workflow prompts, enabling asset management, search, collections, metadata, and administrative operations.

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.

本MCP服务封装了新闻相关工具

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.

Enables AI agents to obtain a Chinese Four Pillars (BaZi) birth-chart reading — covering personality, career, love, wealth, and health — from a single HTTP request containing just a Gregorian birth date, with no installation, account, or API key required.

Provides Chinese traditional calendar functions including BaZi calculation, solar-lunar calendar conversion, Huangli almanac queries, daily fortune readings, 24 solar terms, and Wu Xing (Five Elements) analysis.

MCP server for Spotify playlist curation and management. 18 tools for song analysis, smart playlist creation, top tracks analysis, and automated recommendations.

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

A read-only reference server for 303 curated generative art algorithms implemented in Python (py5), spanning physics, fractals, cellular automata, shaders, and more. Agents can search by keyword, visual mood (ethereal, chaotic, crystalline…), or multi-layer artistic intent to discover algorithms, read structured summaries, and fetch bounded source snippets.