{"$schema":"https://wellknown.network/schemas/agent-record-v1.json","schemaVersion":"1","id":"ag_c8e399r2z5pm","handle":"clef","url":"https://wellknown.network/agents/clef","links":{"self":"https://wellknown.network/agents/clef/record.json","html":"https://wellknown.network/agents/clef","markdown":"https://wellknown.network/agents/clef/record.md","api":"https://wellknown.network/api/v1/agents/clef","status":"https://wellknown.network/api/v1/agents/clef/status","claim":"https://wellknown.network/agents/clef/claim","claimApi":"https://wellknown.network/api/v1/claims","claimDescriptor":"https://wellknown.network/agents/clef/claim.json","badge":"https://wellknown.network/agents/clef/badge.svg","openapi":"https://wellknown.network/openapi.json","history":"https://wellknown.network/api/v1/agents/clef/history","tools":"https://wellknown.network/api/v1/agents/clef/tools"},"ard":{"identifier":"urn:air:clefdrills.com:server:clef","type":"application/mcp-server-card+json"},"kind":"mcp_server","declared":{"name":"clef","summary":"Read-only music guides, chord transposition, piano chord spelling and guitar-tab pitch mapping.","description":"Read-only music guides, chord transposition, piano chord spelling and guitar-tab pitch mapping.","publisher":{"name":"MelMayssonOwen","url":null},"homepage":null,"repository":null,"version":"1.0.0","license":null,"protocols":["mcp"],"tags":[],"pricing":null,"endpoints":[{"url":"https://clefdrills.com/mcp","type":"mcp_streamable_http","auth":null,"probeable":true}],"skills":null,"tools":null,"extra":{"updatedAt":"2026-10-03T16:08:58.119792Z","publishedAt":"2026-10-03T16:08:58.119792Z","registryName":"io.github.MelMayssonOwen/clef"},"attribution":{"kind":"mcp_registry","name":"mcp_registry","summary":"mcp_registry","version":"mcp_registry","description":"mcp_registry","publisherName":"mcp_registry"}},"derived":{"capabilities":[{"slug":"media.music","name":"Music & Audio","confidence":0.859,"provenance":"derived"},{"slug":"documents.conversion","name":"Document Conversion","confidence":0.51,"provenance":"derived"}],"categories":["documents","media"],"language":"en"},"observed":{"status":"live","statusReason":"Responded 4h ago.","lastOkAt":"2026-10-09T22:28:16.653Z","lastProbedAt":"2026-10-09T22:28:16.653Z","statusComputedAt":"2026-10-09T22:29:06.565Z","reliability30d":{"probes":22,"successRate":1,"p50Ms":407,"basis":"service","measures":{"availability":"availability","latency":"response time","tools":"tool surface observed","summary":"Checks reached the service itself."},"checks":{"total":22,"ok":22,"authBoundaryOk":0,"serviceOk":22,"note":"Counted from the observation rows for the window, checks of the server only (HTTP, A2A card, MCP initialize). ok = authBoundaryOk + serviceOk. `probes` is the sum of daily rollups and includes registry checks, so it can differ from `total`."}},"latestObservations":[{"at":"2026-10-09T22:28:16.653Z","kind":"mcp_initialize","ok":true,"httpStatus":200,"latencyMs":378,"error":null,"detail":{"tools":[{"name":"find_music_guides","description":"Find Clef instructional guides by words in the title and description. Guides are not file converters."},{"name":"transpose_chords","description":"Transpose chord symbols, including slash bass notes. Does not process audio, lyrics, or notation files."},{"name":"spell_piano_chord","description":"Spell a supported chord as piano pitches with octave and MIDI values. This does not create a rhythmic arrangement."},{"name":"tab_to_piano_notes","description":"Convert six-string ASCII guitar tab to sounding piano pitches. Tab spacing does not specify note duration. No GP files or audio uploads."}],"toolCount":4,"toolsHash":"c318984174773a3b56d082cbe101af37a7d8a538df4ab6cc8e76496191e6b200","serverName":"clef-music-tools","capabilities":["resources","tools"],"serverVersion":"1.0.0","protocolVersion":"2025-06-18"}},{"at":"2026-10-09T16:33:06.917Z","kind":"mcp_initialize","ok":true,"httpStatus":200,"latencyMs":411,"error":null,"detail":{"tools":[{"name":"find_music_guides","description":"Find Clef instructional guides by words in the title and description. Guides are not file converters."},{"name":"transpose_chords","description":"Transpose chord symbols, including slash bass notes. Does not process audio, lyrics, or notation files."},{"name":"spell_piano_chord","description":"Spell a supported chord as piano pitches with octave and MIDI values. This does not create a rhythmic arrangement."},{"name":"tab_to_piano_notes","description":"Convert six-string ASCII guitar tab to sounding piano pitches. Tab spacing does not specify note duration. No GP files or audio uploads."}],"toolCount":4,"toolsHash":"c318984174773a3b56d082cbe101af37a7d8a538df4ab6cc8e76496191e6b200","serverName":"clef-music-tools","capabilities":["resources","tools"],"serverVersion":"1.0.0","protocolVersion":"2025-06-18"}},{"at":"2026-10-09T09:27:53.815Z","kind":"mcp_initialize","ok":true,"httpStatus":200,"latencyMs":378,"error":null,"detail":{"tools":[{"name":"find_music_guides","description":"Find Clef instructional guides by words in the title and description. Guides are not file converters."},{"name":"transpose_chords","description":"Transpose chord symbols, including slash bass notes. Does not process audio, lyrics, or notation files."},{"name":"spell_piano_chord","description":"Spell a supported chord as piano pitches with octave and MIDI values. This does not create a rhythmic arrangement."},{"name":"tab_to_piano_notes","description":"Convert six-string ASCII guitar tab to sounding piano pitches. Tab spacing does not specify note duration. No GP files or audio uploads."}],"toolCount":4,"toolsHash":"c318984174773a3b56d082cbe101af37a7d8a538df4ab6cc8e76496191e6b200","serverName":"clef-music-tools","capabilities":["resources","tools"],"serverVersion":"1.0.0","protocolVersion":"2025-06-18"}},{"at":"2026-10-09T02:27:42.421Z","kind":"mcp_initialize","ok":true,"httpStatus":200,"latencyMs":403,"error":null,"detail":{"tools":[{"name":"find_music_guides","description":"Find Clef instructional guides by words in the title and description. Guides are not file converters."},{"name":"transpose_chords","description":"Transpose chord symbols, including slash bass notes. Does not process audio, lyrics, or notation files."},{"name":"spell_piano_chord","description":"Spell a supported chord as piano pitches with octave and MIDI values. This does not create a rhythmic arrangement."},{"name":"tab_to_piano_notes","description":"Convert six-string ASCII guitar tab to sounding piano pitches. Tab spacing does not specify note duration. No GP files or audio uploads."}],"toolCount":4,"toolsHash":"c318984174773a3b56d082cbe101af37a7d8a538df4ab6cc8e76496191e6b200","serverName":"clef-music-tools","capabilities":["resources","tools"],"serverVersion":"1.0.0","protocolVersion":"2025-06-18"}},{"at":"2026-10-08T20:24:30.993Z","kind":"mcp_initialize","ok":true,"httpStatus":200,"latencyMs":450,"error":null,"detail":{"tools":[{"name":"find_music_guides","description":"Find Clef instructional guides by words in the title and description. Guides are not file converters."},{"name":"transpose_chords","description":"Transpose chord symbols, including slash bass notes. Does not process audio, lyrics, or notation files."},{"name":"spell_piano_chord","description":"Spell a supported chord as piano pitches with octave and MIDI values. This does not create a rhythmic arrangement."},{"name":"tab_to_piano_notes","description":"Convert six-string ASCII guitar tab to sounding piano pitches. Tab spacing does not specify note duration. No GP files or audio uploads."}],"toolCount":4,"toolsHash":"c318984174773a3b56d082cbe101af37a7d8a538df4ab6cc8e76496191e6b200","serverName":"clef-music-tools","capabilities":["resources","tools"],"serverVersion":"1.0.0","protocolVersion":"2025-06-18"}},{"at":"2026-10-08T13:22:14.661Z","kind":"mcp_initialize","ok":true,"httpStatus":200,"latencyMs":388,"error":null,"detail":{"tools":[{"name":"find_music_guides","description":"Find Clef instructional guides by words in the title and description. Guides are not file converters."},{"name":"transpose_chords","description":"Transpose chord symbols, including slash bass notes. Does not process audio, lyrics, or notation files."},{"name":"spell_piano_chord","description":"Spell a supported chord as piano pitches with octave and MIDI values. This does not create a rhythmic arrangement."},{"name":"tab_to_piano_notes","description":"Convert six-string ASCII guitar tab to sounding piano pitches. Tab spacing does not specify note duration. No GP files or audio uploads."}],"toolCount":4,"toolsHash":"c318984174773a3b56d082cbe101af37a7d8a538df4ab6cc8e76496191e6b200","serverName":"clef-music-tools","capabilities":["resources","tools"],"serverVersion":"1.0.0","protocolVersion":"2025-06-18"}},{"at":"2026-10-08T06:23:34.378Z","kind":"mcp_initialize","ok":true,"httpStatus":200,"latencyMs":388,"error":null,"detail":{"tools":[{"name":"find_music_guides","description":"Find Clef instructional guides by words in the title and description. Guides are not file converters."},{"name":"transpose_chords","description":"Transpose chord symbols, including slash bass notes. Does not process audio, lyrics, or notation files."},{"name":"spell_piano_chord","description":"Spell a supported chord as piano pitches with octave and MIDI values. This does not create a rhythmic arrangement."},{"name":"tab_to_piano_notes","description":"Convert six-string ASCII guitar tab to sounding piano pitches. Tab spacing does not specify note duration. No GP files or audio uploads."}],"toolCount":4,"toolsHash":"c318984174773a3b56d082cbe101af37a7d8a538df4ab6cc8e76496191e6b200","serverName":"clef-music-tools","capabilities":["resources","tools"],"serverVersion":"1.0.0","protocolVersion":"2025-06-18"}},{"at":"2026-10-07T23:24:19.664Z","kind":"mcp_initialize","ok":true,"httpStatus":200,"latencyMs":381,"error":null,"detail":{"tools":[{"name":"find_music_guides","description":"Find Clef instructional guides by words in the title and description. Guides are not file converters."},{"name":"transpose_chords","description":"Transpose chord symbols, including slash bass notes. Does not process audio, lyrics, or notation files."},{"name":"spell_piano_chord","description":"Spell a supported chord as piano pitches with octave and MIDI values. This does not create a rhythmic arrangement."},{"name":"tab_to_piano_notes","description":"Convert six-string ASCII guitar tab to sounding piano pitches. Tab spacing does not specify note duration. No GP files or audio uploads."}],"toolCount":4,"toolsHash":"c318984174773a3b56d082cbe101af37a7d8a538df4ab6cc8e76496191e6b200","serverName":"clef-music-tools","capabilities":["resources","tools"],"serverVersion":"1.0.0","protocolVersion":"2025-06-18"}},{"at":"2026-10-07T16:29:11.860Z","kind":"mcp_initialize","ok":true,"httpStatus":200,"latencyMs":399,"error":null,"detail":{"tools":[{"name":"find_music_guides","description":"Find Clef instructional guides by words in the title and description. Guides are not file converters."},{"name":"transpose_chords","description":"Transpose chord symbols, including slash bass notes. Does not process audio, lyrics, or notation files."},{"name":"spell_piano_chord","description":"Spell a supported chord as piano pitches with octave and MIDI values. This does not create a rhythmic arrangement."},{"name":"tab_to_piano_notes","description":"Convert six-string ASCII guitar tab to sounding piano pitches. Tab spacing does not specify note duration. No GP files or audio uploads."}],"toolCount":4,"toolsHash":"c318984174773a3b56d082cbe101af37a7d8a538df4ab6cc8e76496191e6b200","serverName":"clef-music-tools","capabilities":["resources","tools"],"serverVersion":"1.0.0","protocolVersion":"2025-06-18"}},{"at":"2026-10-07T10:50:08.713Z","kind":"mcp_initialize","ok":true,"httpStatus":200,"latencyMs":619,"error":null,"detail":{"tools":[{"name":"find_music_guides","description":"Find Clef instructional guides by words in the title and description. Guides are not file converters."},{"name":"transpose_chords","description":"Transpose chord symbols, including slash bass notes. Does not process audio, lyrics, or notation files."},{"name":"spell_piano_chord","description":"Spell a supported chord as piano pitches with octave and MIDI values. This does not create a rhythmic arrangement."},{"name":"tab_to_piano_notes","description":"Convert six-string ASCII guitar tab to sounding piano pitches. Tab spacing does not specify note duration. No GP files or audio uploads."}],"toolCount":4,"toolsHash":"c318984174773a3b56d082cbe101af37a7d8a538df4ab6cc8e76496191e6b200","serverName":"clef-music-tools","capabilities":["resources","tools"],"serverVersion":"1.0.0","protocolVersion":"2025-06-18"}}],"tools":[{"name":"find_music_guides","description":"Find Clef instructional guides by words in the title and description. Guides are not file converters."},{"name":"transpose_chords","description":"Transpose chord symbols, including slash bass notes. Does not process audio, lyrics, or notation files."},{"name":"spell_piano_chord","description":"Spell a supported chord as piano pitches with octave and MIDI values. This does not create a rhythmic arrangement."},{"name":"tab_to_piano_notes","description":"Convert six-string ASCII guitar tab to sounding piano pitches. Tab spacing does not specify note duration. No GP files or audio uploads."}],"package":null,"toolSurface":{"id":"ts_ykq9j3pxvt3f","endpointId":"ep_7869whc6jh5f","hash":"c318984174773a3b56d082cbe101af37a7d8a538df4ab6cc8e76496191e6b200","toolCount":4,"serverName":"clef-music-tools","serverVersion":"1.0.0","protocolVersion":"2025-06-18","firstSeenAt":"2026-10-04T03:28:19.738Z","lastSeenAt":"2026-10-09T22:28:16.676Z","observations":22,"toolNames":["find_music_guides","transpose_chords","spell_piano_chord","tab_to_piano_notes"],"distinctSurfaces":1},"endpointFacts":[{"id":"ep_7869whc6jh5f","url":"https://clefdrills.com/mcp","type":"mcp_streamable_http","factsCheckedAt":"2026-10-07T23:24:19.669Z","auth":{"observedAt":"2026-10-07T23:24:19.809Z","authRequired":false,"scheme":null,"resourceMetadata":null,"authorizationServer":null,"conformance":{"dpop":false,"rfc8414":false,"rfc9728":false,"pkceS256":false,"clientIdMetadataDocument":false,"dynamicClientRegistration":false}},"tls":{"observedAt":"2026-10-07T23:24:19.821Z","protocol":"TLSv1.3","chainValid":true,"chainError":null,"hostMatches":true,"subject":"clefdrills.com","issuer":{"commonName":"WE1","organization":"Google Trust Services"},"validFrom":"2026-09-01T12:33:35.000Z","validTo":"2026-11-30T13:31:17.000Z","daysToExpiry":51,"sanCount":2,"fingerprint256":"3D:DB:D1:EE:D2:D6:FC:3F:C8:42:BF:B6:3F:62:E6:7E:F5:1D:DD:60:80:4B:9B:CB:1E:D1:7C:15:8F:7D:16:F2"}}]},"verification":{"claimed":false,"claimedAt":null,"proofs":[]},"provenance":{"sources":[{"source":"mcp_registry","key":"io.github.MelMayssonOwen/clef","url":"https://registry.modelcontextprotocol.io/v0/servers/io.github.MelMayssonOwen%2Fclef","firstSeenAt":"2026-10-04T03:20:13.137Z","fetchedAt":"2026-10-09T23:22:43.689Z","normalizedAt":"2026-10-09T23:22:43.689Z"}]},"firstSeenAt":"2026-10-04T03:20:13.137Z","updatedAt":"2026-10-09T22:30:15.097Z"}