# whatsrust

> whatsrust — 199-biotechnologies-whatsrust. Use this tool when you need to interact with WhatsApp's API in a lightweight and efficient manner, solving problems such as automating WhatsApp messaging or integrating WhatsApp functionality into your application. It provides 54 API endpoints and 30 MCP tools, accepting input via API calls and outputting WhatsApp messages and data. Use whatsrust in contexts where a small binary size and low RAM usage are beneficial, such as in resource-constrained environments or IoT devices.

Canonical page: https://skillsregistry.net/skills/199-biotechnologies-whatsrust  
JSON: https://api.skillsregistry.net/v1/skills/199-biotechnologies-whatsrust

## Description

WhatsApp in pure Rust. Single binary, 5 MB, 15 MB RAM. 54 API endpoints, 30 MCP tools, full protocol.

## Trust

- **Trust score (0–1):** 0.26
- **Verification tier:** scanned
- **Last scanned:** 2026-09-28

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** container
- **Runtime environment:** vm
- **Category:** communication
- **Updated:** 2026-09-28

## Source

- **Source listing:** [GitHub](https://github.com/199-biotechnologies/whatsrust)

## 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": "199-biotechnologies-whatsrust"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/199-biotechnologies-whatsrust` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/199-biotechnologies-whatsrust/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