"Services or tools that don't require a separate API key" matching MCP connectors:

Turn AI chats into vocabulary: capture words and grammar into spaced-repetition flashcards.

Dream symbol interpretation and dream-dictionary lookups for AI agents, one API key.

Recherche d'offres de stage et d'alternance en France via le réseau iQuesta.com

Deterministic Music Theory for Claude, Cursor, and Autonomous AI Agents Large Language Models (LLMs) frequently hallucinate music theory, leading to incorrect notes, false Roman numerals, and broken voice leading. THIRI solves this by providing a deterministic, mathematical music-theory engine (pitch-class-set theory over ℤ/12) directly to your AI. It gives AI assistants precise, reproducible harmonic reasoning in milliseconds, allowing them to write correct musical scores, analyze progression

Fetch real California Notary Public exam practice questions and grade answers in-chat.

Free, public calculators and safety-screened DIY guides for carpet cleaning, upholstery cleaning, and limited water-damage cleanup.

Educational MCP server with 17 math/stats tools, visualizations, and persistent workspace

Search papers, format citations in 60 styles, and verify bibliographies against scholarly sources.

Makuri (EU AI tutoring for immigrant children): 11 tools, 2 interactive panels, no user data.

Universities MCP — Hipolabs Universities 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.

Wiktionary MCP — multilingual dictionary via Wikimedia REST + MediaWiki Action API

Courses that argue back: learn adaptively, build real work, then defend it to an AI stakeholder.

Search DevRel tools, communities, jobs, events, CFPs, and guides from devrel.directory.

300+ African scholarships, GPA conversion & 1,700+ visa routes for postgrad students.

Bilingual (EN+ZH) education data: 299 universities, 234 intl schools, degree-ROI, sourced answers.

Search AtCoder problems and fetch public problem statements through MCP.

Find and book verified 1-on-1 online tutors: search by subject, price and rating, then book.

Faith tools for AI agents: cited KJV Scripture, ORA Q&A, sermons, churches, prayer & giving.

Canadian citizenship test practice: verified questions, mock tests, IRCC stats, eligibility tools.