# sms-guard

> sms-guard — askeleven-sms-guard. Use this tool when you need to validate and optimize text messages before sending, ensuring compliance with character encoding, segment count, and opt-out requirements. It solves problems related to message truncation, incorrect encoding, and non-compliant content, providing a reliable interface for checking and splitting long messages. It accepts text messages as input and outputs validated messages with segment count and opt-out wording checks.

Canonical page: https://skillsregistry.net/skills/askeleven-sms-guard  
JSON: https://api.skillsregistry.net/v1/skills/askeleven-sms-guard

## Description

Check a text message before an agent (or a person) sends it: GSM-7 or UCS-2, segment count, the recipient's local time, shorteners and opt-out wording. Splits long messages. CLI, library, and MCP server. Zero dependencies.

## Trust

- **Trust score (0–1):** 0.50
- **Verification tier:** unverified

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** container
- **Runtime environment:** vm
- **License:** MIT
- **Updated:** 2026-09-27

## Source

- **Source listing:** [GitHub](https://github.com/askeleven/sms-guard)

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "askeleven-sms-guard"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/askeleven-sms-guard` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/askeleven-sms-guard/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt