"Answer" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Sanskrit scripture search: Mahabharata, Upanishads, Gita; cited verses, honest no-answer.
An MCP server for Perigee, the open-source 3D viewer of the artificial objects orbiting the Earth, the Moon and Mars and of the spacecraft crossing the solar system. It lets an AI assistant (a teaching assistant, for example) answer questions such as “how far is Mars from the Earth on 1 December 2026?”, “where is the ISS now?” or “what is Lucy's mission?”, and hand the student a live 3D view, with how each number was obtained, from which data, how fresh and how accurate.
Turns your questions into a ready-to-play pub quiz on quizquiz.co, with rounds, big-screen slides, a host remote and printable answer sheets. Returns a preview link and an edit link. Needs a free quizquiz.co account.
ScanSing reads printed sheet music. Give Claude a PDF or a photo of a score and it gets back MusicXML, the format MuseScore, Sibelius, Finale and Dorico open. It is the recogniser inside the ScanSing app for choir singers, offered as a connector. Once a score is recognised, Claude can answer questions about it without recognising it again: - what the key, time signature, tempo and length are, and each part's range, clefs and lyrics; - one voice on its own, for example just the alto line of a choir piece; - the score or a part moved to another key, with notes respelled for the new key signature; - a MIDI file, one track per part, to listen to or rehearse with; - a short-lived download link to open the result in a browser or notation app. It handles PDFs up to 40 pages and PNG, JPEG, HEIC, TIFF and WebP images, can recognise selected pages of a long PDF, and can split a songbook into one MusicXML per piece. A file can be given as a web link or a small image; in Claude Code, a file on your computer is sent through a one-time upload link. Recognition spends pages from your ScanSing plan, so it is the only tool that is not read-only. Everything else works on the stored result and is free. The first connection with a new email comes with 20 free pages; paid plans start at $9 a month for 300 pages. Scores and results are deleted about an hour after recognition and are never used for training.
Lexpad is a vocabulary notebook and flashcard app with spaced repetition (Leitner boxes) for learning words in 81 languages, including English, Spanish, French, German, Arabic, Turkish and Persian. Connect it to ChatGPT, Claude or any MCP client, and your assistant works with the words you collected yourself: • Save words and phrases you ask for, with meanings, example sentences and a level (A1–C2). • Find anything: browse and filter your whole notebook by due, new, struggling, starred or mastered words, level, topic or date added. • Practise: get quizzed on today's due words. Every answer counts as real review, moves the word through the Leitner boxes and keeps your streak. • Edit: fix spellings, change or reorder meanings, star or retire words. Deleting needs its own permission, and the assistant asks first. Lexpad never invents vocabulary: it only works with the words you add, by hand, from a text, or imported from Anki or a Kindle. Sign-in is OAuth on a Lexpad page; your password is never shared, and you can disconnect at any time. Works alongside the Lexpad web app and Android app. Guide and example prompts: https://lexpad.app/features/assistants
Verified maths exercises for tutors and their students, each answer key right by construction.
Learning flashcard maker for supplied question-answer pairs.
Find free math worksheets (Pre-Algebra–Calculus, Statistics) as printable PDFs with answer keys.
Coaching answers from Kevin Middleton's own writing, with the source link for each answer.
Find fixed word searches and their matching printable puzzles and separate answer sheets.
Daily history trivia EN/ES. Preview free; question $0.01, with answer $0.03 USDC (x402, Base).
Turn notes into a study deck: answer each card in your own words, then compare.
Lessonvo: the site's own MCP server — dataset; every answer cites the site.
Sudoku MCP server for free Sudoku puzzles, printable Sudoku worksheets, answer sheets and Sudoku Online playable collections. Eight tools generate verified unique puzzles, check uniqueness, analyze singles-based difficulty, validate progress and provide hints. Make packs of up to 20 puzzles in A4 or US Letter PDFs. Streamable HTTP; free API key and attribution required. Website: https://sudokumax.com — Setup: https://sudokumax.com/developers/mcp
Proctor AI is a free AI grading tool built for teachers who lose evenings to marking. Upload a single PDF of the whole class and the agent splits the papers, reads handwritten answer sheets, grades each one against your rubric, runs integrity analysis for copying and AI-written text, and drafts personalised feedback for every student. The teacher reviews and approves every mark. Now with a Claude MCP so you can grade a class by chatting with Claude. Trusted by 2,000+ teachers.
