# THIRI Chord Intelligence (remote · mcp.thiri.ai)

Deterministic music theory for agents: analyze, voice, reharmonize, conduct — computed, not guessed

- Trust score: 71/100 (medium)
- Change this week: +10
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- remote · `mcp.thiri.ai`: 71/100 (this document), [markdown](https://verifymcp.io/servers/ai-thiri-chord-intelligence/mcp.md), [page](https://verifymcp.io/servers/ai-thiri-chord-intelligence/mcp)
- npm · `@bluesprincemedia/thiri-mcp`: 64/100, [markdown](https://verifymcp.io/servers/ai-thiri-chord-intelligence/bluesprincemedia-thiri-mcp.md), [page](https://verifymcp.io/servers/ai-thiri-chord-intelligence/bluesprincemedia-thiri-mcp)

## Channel facts

- Endpoint: `https://mcp.thiri.ai/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.5.2`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-03.

- **Endpoint Security**: 89/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation is enforced on tool calls, advertised via RFC 9728 protected-resource metadata. Discovery is public, which costs nothing: no tool can be invoked without a token.
  - HTTPS is enforced; there's no plaintext access path.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
  - The authorisation server offers only Dynamic Client Registration (RFC 7591), which MCP 2026-07-28 deprecated in favour of Client ID Metadata Documents.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 49/100
  - AI-judged instruction clarity (fair).
  - Tool/resource definitions use about 216 tokens (~54/item across 4 items; 4 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 27/100
  - Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 67/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 0% of tool parameters carry a description.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add --transport http ai-thiri-chord-intelligence https://mcp.thiri.ai/mcp
```

### Codex

```toml
[mcp_servers.ai-thiri-chord-intelligence]
url = "https://mcp.thiri.ai/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "ai-thiri-chord-intelligence": {
      "type": "remote",
      "url": "https://mcp.thiri.ai/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add ai-thiri-chord-intelligence --url https://mcp.thiri.ai/mcp --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  ai-thiri-chord-intelligence:
    url: "https://mcp.thiri.ai/mcp"
```

### Other

```json
{
  "mcpServers": {
    "ai-thiri-chord-intelligence": {
      "type": "http",
      "url": "https://mcp.thiri.ai/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-02 (score 71, +1)

No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-31 (score 70, +8)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-30 (score 62, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-29 (score 62, +1)

No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-27 (score 61, +1)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-26 (score 60)

First indexed and scored.

## MCP tools (4)

### `analyze_chord` (~44 tokens)

Parse a chord into root, quality, intervals, and (with a key) roman numeral + function.

Input parameters:

- `chord` (string, required)
- `key` (string)

### `resolve_chord` (~31 tokens)

Resolve a chord to spelled notes, frequencies, MIDI, and recommended scales.

Input parameters:

- `chord` (string, required)

### `generate_voicing` (~63 tokens)

Instrument-ready voicing in a style; pass previousNotes for a voice-leading score.

Input parameters:

- `chord` (string, required)
- `keyContext` (string)
- `octave` (number)
- `previousNotes` (array)
- `style` (string)

### `reharmonize` (~78 tokens)

Reharmonize a progression. Techniques: tritone_sub, ii_v_insertion, modal_interchange, diminished_passing, secondary_dominant, chain_of_dominants, coltrane_changes, backdoor (or auto).

Input parameters:

- `key` (string)
- `progression` (array, required)
- `technique` (string)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/ai-thiri-chord-intelligence/mcp#diagnostics

## Score history

- 2026-08-03: 71
- 2026-08-02: 71
- 2026-08-01: 70
- 2026-07-31: 70
- 2026-07-30: 62
- 2026-07-29: 62
- 2026-07-28: 61
- 2026-07-27: 61
- 2026-07-26: 60

## Links

- Remote endpoint: https://mcp.thiri.ai/mcp
- Repository: https://github.com/BluesPrince/thiri-mcp
- Website: https://thiri.ai/
- Changelog RSS feed: https://verifymcp.io/servers/ai-thiri-chord-intelligence/mcp/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/ai-thiri-chord-intelligence/mcp/changelog.json
- HTML version of this page: https://verifymcp.io/servers/ai-thiri-chord-intelligence/mcp