mcp server
THIRI Chord Intelligence
Deterministic music theory for agents: analyze, voice, reharmonize, conduct — computed, not guessed
Description as published by the maintainer. Source
- version 0.5.2
- active
- voice
active — Most recent push to the repository was 2026-08-01. Dashed tags are derived by ZBS Index from the published description, not stated by the maintainer.
What this server can do
5 functions, named and described by the server itself. Parameter names are shown because they say more about what a function does than its name usually does.
analyze_chord(key, chord)- Parse a chord into root, quality, intervals, and (with a key) roman numeral + function. Required: chord.
conduct_band(prompt, durationSec)- Arrange a 4-piece band from a natural-language prompt. Returns conductor tempo/groove, 4 lanes of note events, lead sheet, and base64 MIDI. Audio render (Csound → WAV) stays on local thiri-conductor-mcp / POST /v2/render. Required: prompt.
generate_voicing(chord, style, octave, keyContext, previousNotes)- Instrument-ready voicing in a style; pass previousNotes for a voice-leading score. Required: chord.
reharmonize(key, technique, progression)- Reharmonize a progression. Techniques: tritone_sub, ii_v_insertion, modal_interchange, diminished_passing, secondary_dominant, chain_of_dominants, coltrane_changes, backdoor (or auto). Required: progression.
resolve_chord(chord)- Resolve a chord to spelled notes, frequencies, MIDI, and recommended scales. Required: chord.
Last successful function declaration observed on . Source: https://mcp.thiri.ai/mcp. We list what the server declared; we do not call any of these functions.
Endpoint status observed on . Source: https://mcp.thiri.ai/mcp.
Signals
These are separate measurements of different things. They are deliberately not combined into one score, because a popularity number that mixes website traffic with saves and stars cannot be checked or acted on.
| Signal | Value | What it measures | Window | Observed | Source |
|---|---|---|---|---|---|
| GitHub stars | 4 | Number of GitHub accounts that bookmarked this repository since it was created. It is a bookmark count, not installs, not active users and not quality. | cumulative, all time | GitHub | |
| Last commit | 2026-08-01 | Date of the most recent push to any branch. This is the strongest cheap indicator of whether the project is still maintained. | point in time | GitHub | |
| Open issues | 0 | Open issues plus open pull requests, as GitHub counts them together. A high number can mean an active project or an abandoned one. | as of fetch | GitHub | |
| Package downloads | 275 downloads | Package downloads from the npm registry in this window. Includes continuous integration runs, mirrors and automated installs, so it overstates the number of human users. | 2026-07-30 to 2026-08-05 | npm | |
| Latest published version | 0.5.2 | Latest version string the maintainer published to the registry. | as of fetch | Model Context Protocol | |
| Registry record last updated | 2026-08-01 | When the registry record was last updated by its maintainer. | point in time | Model Context Protocol | |
| First listed in the MCP Registry | 2026-08-01 | Date this server was first published to the official MCP Registry. Not a usage or quality measure. | point in time | Model Context Protocol | |
| repository status | active | The repository exists on GitHub and is not archived. This says nothing about how recently it was worked on. | as of fetch | GitHub | |
| mcp tools declared | 5 tools | Number of functions the server itself declared when asked to list them. This is what the server offers an agent, not a measure of how well any of them work. | as of probe | mcp.thiri.ai | |
| mcp endpoint status | ok | The server listed 5 functions when asked. | as of probe | mcp.thiri.ai |
Where to get it
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These share tags the maintainers applied themselves, such as music-theory, deterministic, ai-music, music. Common tags like "mcp" or "ai" are ignored for this: agreeing with six hundred other projects is not a similarity.
This is not a recommendation and not a test result. It is a map of what the authors said their work is about.
How the author describes it
Topics the maintainer set on GitHub: ai-agent, ai-music, chord-analysis, chord-progression, chords, claude, cursor, deterministic, harmony, jazz, mcp, mcp-server, model-context-protocol, music, music-theory, music-theory-api, reharmonization, roman-numeral-analysis, voice-leading, voicing.
This record as data
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