https://mcp.voice-school.com/singing-vocal-lesson-booking/mcp ↗
Voice School Lesson Booking is a remote MCP server published at mcp.voice-school.com. It has been probed 35 times since 9/4/2026. It answered in 35 of them (100.0%), a near-uninterrupted record. Median response time is 208 ms, placing it among the faster endpoints. It offers a narrow, focused set of 9 tools. On the protocol side it still runs 2025-11-25 and has not moved to the newer spec.
Request online singing lessons with Voice School and Daria Klishina.
Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.
upsert_trainer_social_link — Ambiguous token requirement detailscreate_social_post_draft — Token requirement timing unclearpublish_social_post — Token requirement timing unclear| Run | Era | Modern | ms | Legacy |
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tools/list structure, inputSchema validity, and a functional smoke test — the components of the 0-100 score.
Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.
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[](https://mcpmetrics.io/servers/com-voice-school-singing-vocal-lesson-booking)<a href="https://mcpmetrics.io/servers/com-voice-school-singing-vocal-lesson-booking"><img src="https://mcpmetrics.io/badge/com.voice-school/singing-vocal-lesson-booking/era.svg" alt="mcpmetrics"></a>You are seeing the last 7 days. Sign up for the full history. Which check failed and why is in the dashboard.
Sign up free to see| ms |
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| Versions |
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| 2026-09-07 07:55:38 | Legacy | 400 | 181 | 200 | 191 | 2025-11-25 |
| 2026-09-07 05:25:31 | Unknown | 502 | 184 | 502 | 186 | — |
| 2026-09-07 02:57:58 | Legacy | 400 | 177 | 200 | 175 | 2025-11-25 |
| 2026-09-07 00:27:42 | Legacy | 400 | 279 | 200 | 275 | 2025-11-25 |
| 2026-09-06 22:36:06 | Legacy | 400 | 259 | 200 | 249 | 2025-11-25 |
| 2026-09-06 20:44:13 | Legacy | 400 | 250 | 200 | 270 | 2025-11-25 |
| 2026-09-06 18:49:47 | Legacy | 400 | 195 | 200 | 189 | 2025-11-25 |
| 2026-09-06 16:56:18 | Legacy | 400 | 204 | 200 | 211 | 2025-11-25 |
| 2026-09-06 15:42:25 | Legacy | 400 | 223 | 200 | 240 | 2025-11-25 |
| 2026-09-06 13:49:02 | Legacy | 400 | 233 | 200 | 231 | 2025-11-25 |
Each cell is one probe run. Faded cells are incomplete probes — one leg did not answer, so the era is inconclusive.
The two probe legs separately: modern server/discover and legacy initialize.