# Voice School Lesson Booking (remote · mcp.voice-school.com)

Request online singing lessons with Voice School and Daria Klishina.

- Trust score: 57/100 (low)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-09

## Components

- remote · `mcp.voice-school.com`: 57/100 (this document), [markdown](https://verifymcp.io/servers/com-voice-school-singing-vocal-lesson-booking/singing-vocal-lesson-booking-mcp.md), [page](https://verifymcp.io/servers/com-voice-school-singing-vocal-lesson-booking/singing-vocal-lesson-booking-mcp)

## Channel facts

- Endpoint: `https://mcp.voice-school.com/singing-vocal-lesson-booking/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 2026-08-09.

- **Endpoint Security**: 57/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 4 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - 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.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 57/100
  - AI-judged instruction clarity (fair).
  - Tool/resource definitions use about 353 tokens (~88/item across 4 items; 4 tools + 0 resources), lean.
  - 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**: 71/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 0% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **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 com-voice-school-singing-vocal-lesson-booking https://mcp.voice-school.com/singing-vocal-lesson-booking/mcp
```

### Codex

```toml
[mcp_servers.com-voice-school-singing-vocal-lesson-booking]
url = "https://mcp.voice-school.com/singing-vocal-lesson-booking/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-voice-school-singing-vocal-lesson-booking": {
      "type": "remote",
      "url": "https://mcp.voice-school.com/singing-vocal-lesson-booking/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-voice-school-singing-vocal-lesson-booking --url https://mcp.voice-school.com/singing-vocal-lesson-booking/mcp --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-voice-school-singing-vocal-lesson-booking:
    url: "https://mcp.voice-school.com/singing-vocal-lesson-booking/mcp"
```

### Other

```json
{
  "mcpServers": {
    "com-voice-school-singing-vocal-lesson-booking": {
      "type": "http",
      "url": "https://mcp.voice-school.com/singing-vocal-lesson-booking/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.

### 2026-08-09 (score 57, +1)

- [functional improvement] Stability: unverified → 0.03

### 2026-08-08 (score 56)

First indexed and scored.

## MCP tools (4)

### `voice_school_info` (~32 tokens)

Public description, policy, and catalog links for Voice School online vocal lesson requests.

Input parameters:

- `language` (string)

### `list_lesson_options` (~41 tokens)

List active lesson services and prices for a coach from the live Voice School database.

Input parameters:

- `coach_slug` (string)
- `language` (string)

### `search_lesson_availability` (~74 tokens)

Find free requestable lesson times using coach working windows and busy intervals. The response never includes private learner data.

Input parameters:

- `coach_slug` (string)
- `date_from`
- `date_to`
- `limit` (integer)
- `service_slug` (string)
- `user_timezone`

### `create_lesson_request` (~139 tokens)

Create a request-first lead for an online vocal lesson. Requires name and at least one contact method. This never confirms a lesson or creates a private schedule item.

Input parameters:

- `city_context` (string)
- `coach_slug` (string)
- `email` (string)
- `language` (string)
- `message` (string)
- `name` (string, required)
- `phone` (string)
- `requested_start` (string)
- `requester_timezone` (string)
- `service_slug` (string)
- `source_agent` (string)
- `telegram` (string)
- `whatsapp` (string)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/com-voice-school-singing-vocal-lesson-booking/singing-vocal-lesson-booking-mcp#diagnostics

## Score history

- 2026-08-09: 57
- 2026-08-08: 56

## Links

- Remote endpoint: https://mcp.voice-school.com/singing-vocal-lesson-booking/mcp
- Repository: https://github.com/klishinoleg/voice
- Website: https://voice-school.com/en/mcp/
- Changelog RSS feed: https://verifymcp.io/servers/com-voice-school-singing-vocal-lesson-booking/singing-vocal-lesson-booking-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-voice-school-singing-vocal-lesson-booking/singing-vocal-lesson-booking-mcp.json
- HTML version of this page: https://verifymcp.io/servers/com-voice-school-singing-vocal-lesson-booking/singing-vocal-lesson-booking-mcp