{"uid":"cap_hiWVZt-GpJpo8QlJnUow_","slug":"music-scale-builder-64d54864","name":"Music Scale Builder","description":"Build a scale from a root note and type (major, natural-minor, harmonic-minor, melodic-minor, dorian, phrygian, lydian, mixolydian, locrian, major-pentatonic, minor-pentatonic, blues, chromatic). Heptatonic scales and modes are spelled diatonically (F major → F G A Bb C D E). Returns the note names, MIDI numbers and semitone intervals.","url":"https://music.openverbs.com/v1/scale","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"type":"object","required":["root","type"],"properties":{"root":{"type":"string","maxLength":8,"minLength":1,"description":"Root note, e.g. \"C4\"."},"type":{"enum":["major","natural-minor","harmonic-minor","melodic-minor","dorian","phrygian","lydian","mixolydian","locrian","major-pentatonic","minor-pentatonic","blues","chromatic"],"type":"string","description":"Scale type."}},"additionalProperties":false},"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_dRiSRUutgr1wMGTVpS_fz","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Builds a musical scale from a root note and scale type, returning note names, MIDI numbers, and semitone intervals","exampleAgentPrompt":"Give me all the notes in a G major-pentatonic scale starting from G4, including their MIDI numbers and semitone intervals.","exampleUseCases":[{"title":"Generate chord-compatible scale for songwriting","prompt":"I'm writing a song in D dorian — can you build the full scale from D4 with all the note names and MIDI numbers so I know which notes to use?"},{"title":"Music education scale drill tool","prompt":"Show me every note in the Bb harmonic-minor scale starting at Bb3, spelled out with their MIDI numbers and the semitone intervals between them."},{"title":"MIDI sequencer scale lookup","prompt":"I need the MIDI note numbers for a C blues scale starting at C4 so I can program them into my sequencer."}],"resultDescription":"Returns the complete list of note names (spelled diatonically where applicable, e.g. Bb not A#), their corresponding MIDI note numbers, and the semitone intervals between consecutive scale degrees.","failureModes":["Invalid root note format returns an error (e.g. missing octave number or malformed accidental)","Unrecognized scale type enum value returns a validation error","Missing required fields (root or type) returns a 400-level error","Payment failure via x402 protocol blocks the request"],"whenToPreferThis":"Use this endpoint when you need structured music-theory data — note names, MIDI values, and intervals — for any standard Western scale or mode. Prefer it over generic music-generation endpoints when you need diatonically correct spelling (e.g. F major returns Bb not A#) or precise MIDI numbers for programmatic use in sequencers, DAWs, or music-theory applications.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:35:03.918Z","isFirstParty":false}