# Keyshift Chord Transposer (remote · chord-transposer.zovo.one)

Change keys and capo shapes

- Trust score: 74/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-23

## Components

- remote · `chord-transposer.zovo.one`: 74/100 (this document), [markdown](https://verifymcp.io/servers/theluckystrike-chord-transposer/chord-transposer.md), [page](https://verifymcp.io/servers/theluckystrike-chord-transposer/chord-transposer)

## Channel facts

- Endpoint: `https://chord-transposer.zovo.one/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## 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 2026-10-23.

- **Endpoint Security**: 80/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 74/100
  - 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 839 tokens (~209/item across 4 items; 3 tools + 1 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 3/100
  - Stability observed for 1 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 3 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.
  - Supports UI / widget rendering.

## Install

### How do I install the Keyshift Chord Transposer MCP server?

Keyshift Chord Transposer is a hosted endpoint at https://chord-transposer.zovo.one/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http theluckystrike-chord-transposer 'https://chord-transposer.zovo.one/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "theluckystrike-chord-transposer": {
      "url": "https://chord-transposer.zovo.one/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "theluckystrike-chord-transposer": {
      "type": "http",
      "url": "https://chord-transposer.zovo.one/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.theluckystrike-chord-transposer]
url = "https://chord-transposer.zovo.one/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "theluckystrike-chord-transposer": {
      "type": "remote",
      "url": "https://chord-transposer.zovo.one/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add theluckystrike-chord-transposer --url 'https://chord-transposer.zovo.one/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  theluckystrike-chord-transposer:
    url: "https://chord-transposer.zovo.one/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "theluckystrike-chord-transposer": {
      "Transport": "http",
      "Url": "https://chord-transposer.zovo.one/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add theluckystrike-chord-transposer -t streamable-http -u 'https://chord-transposer.zovo.one/mcp'
```

### Other

```json
{
  "mcpServers": {
    "theluckystrike-chord-transposer": {
      "type": "http",
      "url": "https://chord-transposer.zovo.one/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.

### 2026-10-23 (score 74, +1)

- [functional improvement] Stability: unverified → 0.03

### 2026-10-22 (score 73)

First indexed and scored.

## MCP tools (3)

### `transpose_chords` (~364 tokens)

Transpose chords

Use this when you want to transpose chords or change the key of a song. Accepts a sheet up to 12,000 characters, chords above lyrics or ChordPro brackets; choose semitones -11 to +11, from_key with to_key, or capo_fret 0 to 9. Returns key change, chord mapping, widget sheet and a Latin-only Courier PDF. Chord names only; does not process audio, tablature or staff notation. Key estimates can be wrong for songs that change key.

Input parameters:

- `capo_fret` (integer): Capo fret from 0 to 9; for example 2 returns shapes two semitones below the sounding key. Use this instead of semitones or to_key.
- `from_key` (string): Origin key; for example C or Am. Required with to_key; otherwise the header or first and last chords give a key estimate.
- `semitones` (integer): Signed shift from -11 to +11; for example 2 moves up two semitones. Give one transposition choice.
- `sheet` (string, required): Chord sheet of 1 to 12,000 characters, with chords above lyrics or inline; for example C    G\nLanterns glow, or [Am]Lantern [F]garden.
- `spelling` (string): Chord spelling; for example auto follows the target key, while sharps forces F# instead of Gb for consistent round trips.
- `title` (string): PDF title up to 80 Western Latin characters; for example Lantern Garden.
- `to_key` (string): Target key paired with from_key; for example from_key C and to_key F. Use this instead of semitones or capo_fret.

Output parameters:

- `capo`
- `chord_count` (number)
- `chords_used` (array)
- `downloads` (object)
- `from_key` (string)
- `gaps` (array)
- `in_key` (array)
- `key_estimated` (boolean)
- `kind` (string)
- `lyric_lines` (number)
- `mode` (string)
- `notes` (array)
- `semitones` (number)
- `to_key` (string)
- `unique_chord_count` (number)

### `find_capo_options` (~149 tokens)

Find capo options

Use this when you want a capo chart or capo calculator for a sounding key or chord list. Returns frets 0 to 9, the shapes to play and easy open chord counts. Supply one key or 1 to 100 chord names, each up to 80 characters. Does not process audio, tablature or staff notation; ease counts chord names, not fingering variations.

Input parameters:

- `chords` (array): Chord list of 1 to 100 names; for example ["D", "G", "A", "Bm"]. Give this instead of key.
- `key` (string): Sounding key, for example D or Am. Give key or chords, not both.

Output parameters:

- `chord_count` (number)
- `key` (string|null)
- `kind` (string)
- `options` (array)
- `shapes_truncated` (boolean)

### `show_chord_sheet` (~230 tokens)

Show chord sheet

Use this when you want a live chord sheet with -1 and +1 semitone controls. Accepts 1 to 12,000 characters in chord-line or ChordPro format; controls call transpose_chords. Shows the original key and chord counts plus a Latin-only Courier PDF. Chord names only; does not process audio, tablature or staff notation. Key estimates can be wrong for songs that change key.

Input parameters:

- `from_key` (string): Origin key; for example C or Am. Required with to_key; otherwise the header or first and last chords give a key estimate.
- `sheet` (string, required): Chord sheet of 1 to 12,000 characters, with chords above lyrics or inline; for example C    G\nLanterns glow, or [Am]Lantern [F]garden.
- `spelling` (string): Chord spelling; for example auto follows the target key, while sharps forces F# instead of Gb for consistent round trips.
- `title` (string): PDF title up to 80 Western Latin characters; for example Lantern Garden.

Output parameters:

- `capo`
- `chord_count` (number)
- `chords_used` (array)
- `downloads` (object)
- `from_key` (string)
- `gaps` (array)
- `in_key` (array)
- `key_estimated` (boolean)
- `kind` (string)
- `lyric_lines` (number)
- `mode` (string)
- `notes` (array)
- `semitones` (number)
- `to_key` (string)
- `unique_chord_count` (number)

## Diagnostics

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

## Score history

- 2026-10-23: 74
- 2026-10-22: 73

## Common questions

### What is the Keyshift Chord Transposer MCP server?

Keyshift Chord Transposer is an MCP server listed in the public MCP registry as io.github.theluckystrike/chord-transposer. Change keys and capo shapes. This page covers its hosted endpoint (https://chord-transposer.zovo.one/mcp).

### Is the Keyshift Chord Transposer MCP server safe to use?

Keyshift Chord Transposer scores 74 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Keyshift Chord Transposer MCP server expose?

Keyshift Chord Transposer exposes 3 tools: transpose_chords, find_capo_options, show_chord_sheet. Their descriptions and schemas cost roughly 743 tokens of context every time the server is loaded.

### Does the Keyshift Chord Transposer MCP server require authentication?

No. We connected to Keyshift Chord Transposer without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Keyshift Chord Transposer MCP server still maintained?

Keyshift Chord Transposer is still listed as active in the MCP registry. We last reached this channel on 23 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://chord-transposer.zovo.one/mcp
- Website: https://chord-transposer.zovo.one/
- Changelog RSS feed: https://verifymcp.io/servers/theluckystrike-chord-transposer/chord-transposer.xml
- Changelog JSON feed: https://verifymcp.io/servers/theluckystrike-chord-transposer/chord-transposer.json
- HTML version of this page: https://verifymcp.io/servers/theluckystrike-chord-transposer/chord-transposer