"Services or tools that don't require a separate API key" matching MCP connectors:
Matching Connector Tools:
Free Vedic astrology: panchang, kundali, transits, matching, doshas, eclipses, numerology
Vedic kundli, panchang, dashas, nakshatras and KP charts for AI agents, one API key.
qart.uk MCP server: resolve scanned codes, browse the free pool, and buy QR artwork.
A one-stop creative pipeline for AI agents: generate, upscale, enrich, sign, store, mint. 24 paid MCP tools powered by Stable Diffusion, Imagen 3, ESRGAN, and Gemini — plus 53K+ museum artworks from Alexandria Aeternum. Three payment rails, volume discounts, and a free trial to start.
2,400 castles, fortresses & palaces: name search, nearby, fame ranking, statistics. No key, CC0.
Buddhist canon tools: search, passages, cross-canon parallels, dictionaries — all URN-cited.
Read, search and cite all 81 chapters of the Tao Te Ching, with per-rendering attribution.
Quotes MCP — citation-grade quote API for public-domain authors.
Cleveland Museum of Art Open Access API (~63k artworks, many CC0)
AniList MCP — wraps AniList GraphQL API (free, no auth)
Guardian Open Platform: content search, articles, sections, tags. Free dev key.
Comic Vine: characters, issues, volumes, creators, publishers. Free key.
Search, navigate, and explore the Quran through 8 MCP tools — verses, surahs, lemmas, roots, and morphology. Hosted at mcp.quran.us.kg.
An API of Ice and Fire — A Song of Ice and Fire (books/characters/houses)
Search 2,500+ curated architecture, design, photography and art projects. Free tier, no signup.
Agent integration with the Northwestern University Libraries Digital Collections API