# Cleat (remote · cleat.so)

A real US mobile number that receives verification codes, by text or transcribed call.

- Trust score: 80/100 (high trust)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-20

## Components

- remote · `cleat.so`: 80/100 (this document), [markdown](https://verifymcp.io/servers/so-cleat-cleat/api-mcp.md), [page](https://verifymcp.io/servers/so-cleat-cleat/api-mcp)

## Channel facts

- Endpoint: `https://cleat.so/api/mcp`
- Transports: `streamable-http`
- Auth: `required`
- 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 2026-09-20.

- **Endpoint Security**: 89/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation is enforced on tool calls, but the challenge carries no valid RFC 9728 metadata, so a client cannot discover where to get a token.
  - 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**: 79/100
  - AI-judged instruction clarity (excellent).
  - Tool/resource definitions use about 200 tokens (~50/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**: 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.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 4 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 4 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 60/100
  - Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28.

## Install

### How do I install the Cleat MCP server?

Cleat is a hosted endpoint at https://cleat.so/api/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 so-cleat-cleat 'https://cleat.so/api/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "so-cleat-cleat": {
      "url": "https://cleat.so/api/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "so-cleat-cleat": {
      "type": "http",
      "url": "https://cleat.so/api/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.so-cleat-cleat]
url = "https://cleat.so/api/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "so-cleat-cleat": {
      "type": "remote",
      "url": "https://cleat.so/api/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add so-cleat-cleat --url 'https://cleat.so/api/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  so-cleat-cleat:
    url: "https://cleat.so/api/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "so-cleat-cleat": {
      "Transport": "http",
      "Url": "https://cleat.so/api/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add so-cleat-cleat -t streamable-http -u 'https://cleat.so/api/mcp'
```

### Other

```json
{
  "mcpServers": {
    "so-cleat-cleat": {
      "type": "http",
      "url": "https://cleat.so/api/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.

### 2026-09-20 (score 80, +1)

No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-17 (score 79, +1)

No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-15 (score 78, +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.

### 2026-09-13 (score 77, +1)

- [functional improvement] Stability: unverified → 0.03

### 2026-09-12 (score 76)

First indexed and scored.

## MCP tools (4)

### `list_lines` (~22 tokens)

List lines

The phone numbers in this workspace that can receive texts, newest first.

### `list_messages` (~50 tokens)

List messages

Texts received by one line, newest first.

Input parameters:

- `limit` (integer): How many to return. Defaults to 20.
- `lineId` (string, required): The line's id, from list_lines.

### `latest_code` (~41 tokens)

Latest code

The most recent verification code sent to a line, or nothing if none has arrived.

Input parameters:

- `lineId` (string, required): The line's id, from list_lines.

### `wait_for_code` (~87 tokens)

Wait for a code

Waits 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.

Input parameters:

- `lineId` (string, required): The line's id, from list_lines.
- `timeoutSeconds` (integer): How long to wait, up to 55. Defaults to 30.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/so-cleat-cleat/api-mcp#diagnostics

## Score history

- 2026-09-20: 80
- 2026-09-19: 79
- 2026-09-18: 79
- 2026-09-17: 79
- 2026-09-16: 78
- 2026-09-15: 78
- 2026-09-14: 77
- 2026-09-13: 77
- 2026-09-12: 76

## Common questions

### What is the Cleat MCP server?

Cleat is an MCP server listed in the public MCP registry as so.cleat/cleat. A real US mobile number that receives verification codes, by text or transcribed call. This page covers its hosted endpoint (https://cleat.so/api/mcp).

### Is the Cleat MCP server safe to use?

Cleat scores 80 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 Cleat MCP server expose?

Cleat exposes 4 tools: list_lines, list_messages, latest_code, wait_for_code. Their descriptions and schemas cost roughly 200 tokens of context every time the server is loaded.

### Does the Cleat MCP server require authentication?

Yes. Cleat asked us for credentials when we connected, so you will need to authorise it in your MCP client before it can do anything.

### Is the Cleat MCP server still maintained?

Cleat is still listed as active in the MCP registry. We last reached this channel on 20 September 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://cleat.so/api/mcp
- Authorisation metadata: https://cleat.so/.well-known/oauth-protected-resource/api/mcp
- Website: https://cleat.so/for/ai-agents
- Changelog RSS feed: https://verifymcp.io/servers/so-cleat-cleat/api-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/so-cleat-cleat/api-mcp.json
- HTML version of this page: https://verifymcp.io/servers/so-cleat-cleat/api-mcp