"An overview of temporal knowledge graphs" matching MCP connectors:

DeepMark helps teachers deliver rapid, consistent marking with meaningful feedback for every student — in a fraction of the time. What once took a week, now takes one free period.

Free Memory-First AI Operator course as an MCP server. Bundled curriculum, no account needed.

DOJO+ — directory of martial arts schools, classes, instructors, ranks, and events.

Search the Legends of Learning K-8 games catalog and standards alignment

Non-diagnostic child-development knowledge by Pinnacle Blooms: search, milestones, ICF crosswalk.

ArcFlow exposes the Destiny Matrix numerology calculator as MCP tools. Given a date of birth it returns a structured reading (core numbers 1–22 for personality, talents, money, relationships, life purpose and karmic patterns, each with a short interpretation) plus a rendered octagram image. A second tool computes compatibility between two birth dates. Deterministic, read-only, no auth.

DOAJ MCP — Directory of Open Access Journals

Sefaria MCP — the free digital library of Jewish texts.

Multilingual YouTube → Knowledge Pack engine. Paste a video URL and get a structured pack — summary, key ideas, glossary, quiz, transcript with timestamps — in Spanish, Portuguese, German, or English. Anonymous endpoint plus OAuth-gated tools for library search, RAG Q&A on a single pack, and Anki export.

Access Sefaria's library of Jewish texts, commentaries, and learning schedules via MCP

Free directory of youth programs and licensed daycares in Lodi, CA. 72 tools.

162K English words, 74K lessons, knowledge graph, semantic reverse-dictionary search.

Consent-scoped vault access and free verification of family-issued learning records.

Create and run live audience polls from your AI assistant, with a scan-to-vote QR and an AI recap.

Discover the true meaning of any English word with our Dictionary Lexicon MCP. Whether you're a

Etapa is an AI cycling coach for beginners. The MCP exposes two tools: `generate_training_plan` (2-4 week plans powered by the Etapa API) and `cycling_beginner_guide` (advice on bikes, gear, safety). Free, no account.

Search O'Reilly for tech books, courses, events, and more. Requires an O'Reilly subscription.