"Exploring Gemini Services or Tools That Don’t Require an 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.
BaZi (Chinese Four Pillars) chart calculator. Structured chart data only, no predictions.
Semantic search over the Stoic corpus — Marcus Aurelius' Meditations, Seneca's essays, and Epictetus' Discourses, Enchiridion and Fragments. Search by theme or citation, fetch any passage, or get the daily reflection. Public domain translations, no auth.
qart.uk MCP server: resolve scanned codes, browse the free pool, and buy QR artwork.
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)
Search, navigate, and explore the Quran through 8 MCP tools — verses, surahs, lemmas, roots, and morphology. Hosted at mcp.quran.us.kg.
Guardian Open Platform: content search, articles, sections, tags. Free dev key.
Comic Vine: characters, issues, volumes, creators, publishers. Free key.
An API of Ice and Fire — A Song of Ice and Fire (books/characters/houses)
Agent integration with the Northwestern University Libraries Digital Collections API
Search 2,500+ curated architecture, design, photography and art projects. Free tier, no signup.