Cleat
Description
A real US mobile number that receives verification codes, by text or transcribed call.
What our measurements say
Cleat is a remote MCP server published at cleat.so. It has been probed 6 times since 9/12/2026. It answered in 6 of them (100.0%), a near-uninterrupted record. Median response time is 640 ms, a delay an agent will notice. It offers a narrow, focused set of 4 tools. On the protocol side it still runs 2025-11-25 and has not moved to the newer spec.
Agent readability score
Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.
Agent readability score
Agent readability score
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| Run | Era | Modern | ms | Legacy | ms | Versions |
|---|---|---|---|---|---|---|
| 2026-09-13 01:33:33 | Legacy | 200 | 365 | 200 | 380 | 2025-06-18 |
| 2026-09-12 23:31:36 | Legacy | 200 | 862 | 200 | 875 | 2025-06-18 |
| 2026-09-12 21:29:15 | Legacy | 200 | 276 | 200 | 323 | 2025-06-18 |
| 2026-09-12 19:27:29 | Legacy | 200 | 640 | 200 | 652 | 2025-06-18 |
| 2026-09-12 17:24:09 | Legacy | 200 | 742 | 200 | 681 | 2025-06-18 |
| 2026-09-12 15:21:42 | Legacy | 200 | 567 | 200 | 528 | 2025-06-18 |
Schema compliance
tools/list structure, inputSchema validity, and a functional smoke test — the components of the 0-100 score.
- tools/list schema valid
- inputSchema is valid JSON Schema
- Smoke test not run this round
- Cold-start: cold 166ms → warm 156ms (penalty 10ms)
Tools
Tools the server advertised in the latest measurement — measured, not catalog-claimed.
list_linesThe phone numbers in this workspace that can receive texts, newest first.
list_messagesTexts received by one line, newest first.
lineIdstringrequiredlimitinteger
latest_codeThe most recent verification code sent to a line, or nothing if none has arrived.
lineIdstringrequired
wait_for_codeWaits for the next verification code to arrive at a line and returns it. Call this immediately BEFORE triggering the text, so nothing is missed. Returns timedOut: true if none arrives in time.
lineIdstringrequiredtimeoutSecondsinteger
Availability history
Each block is one measurement round. Green: working response. Amber: responded but the server was returning errors (5xx). Red: no response at all.
Era history
Each cell is one probe run. Faded cells are incomplete probes — one leg did not answer, so the era is inconclusive.
Response time history
The two probe legs separately: modern server/discover and legacy initialize.
Event log
Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.
- Added to watch — era: Legacy
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[](https://mcpmetrics.io/servers/so-cleat-cleat)<a href="https://mcpmetrics.io/servers/so-cleat-cleat"><img src="https://mcpmetrics.io/badge/so.cleat/cleat/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.
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