"Socket.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).
Codewars user profiles, completed kata, authored kata, kata detail. Keyless.
LeetCode public profiles, solved counts, daily question, problem detail.
Official MCP server for Certifier to issue, manage, and track certificates and badges.
uxspot.io UX reference: glossary, AI x UX tools directory, checklists and Learn UX curriculum