"Fly.io" matching MCP connectors:
Federated search of books and papers, BibTeX/RIS citations, open-access retrieval and reading.
UNESCO Institute for Statistics (UIS) MCP — keyless.
DOAJ MCP — Directory of Open Access Journals
Sefaria MCP — the free digital library of Jewish texts.
Wiktionary MCP — multilingual dictionary via Wikimedia REST + MediaWiki Action API
Universities MCP — Hipolabs Universities API (free, no auth)
Wordnik English dictionary: definitions, examples, related words, WotD.
Codeforces competitive programming users, contests, problems
Merriam-Webster MCP — wraps the Merriam-Webster Collegiate Dictionary and
Open Library MCP — Internet Archive's open book metadata
Browser-based VR public speaking training with AI feedback. No headset required. Six MCP tools: list pricing plans, 3D practice environments, audience use cases, competitor comparison, FAQs, and quick-start guide.
Jisho.org Japanese-English dictionary MCP (keyless).
MCP server for astrological calculations — birth charts, transits, progressions, and calendar generation
Codewars user profiles, completed kata, authored kata, kata detail. Keyless.
LeetCode public profiles, solved counts, daily question, problem detail.
Query the full BC K-12 curriculum: Big Ideas, Competencies, Content, and more.
Official MCP server for Certifier to issue, manage, and track certificates and badges.