whatsapp_send_text

Send a text message via WhatsApp Business Cloud API.

SERVERUnClick SOURCE@unclick/mcp-server

Medium RISK CLASS

Category Write

Parameters 54 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-malamutemayhem-unclick-mcp-server/whatsapp-send-text.md

WHAT IT DOES

What whatsapp_send_text does on UnClick

AI agents use whatsapp_send_text to create or update resources in UnClick, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your UnClick environment.

Parameter	Type	Required	Description
`to`	string	Yes	Recipient phone number in E.164 format
`body`	string	Yes	Message text
`preview_url`	boolean	—
`bearer_token`	string	Yes
`phone_number_id`	string	Yes	Your WhatsApp phone number ID from Meta for Developers

Parameters from the server's own tool schema.

RISK

Why whatsapp_send_text is rated Medium

This tool creates and sends data (a text message) via a real messaging service. While messages are not stored data reversals, they represent irreversible communications sent to external parties. Misuse by an AI agent could result in spam, phishing, social engineering, or harassment campaigns. The high severity reflects the potential blast radius: mass unsolicited messaging, impersonation, or credential theft.

From the tool's definition Tool name 'whatsapp_send_text' and description 'Send a text message via WhatsApp Business Cloud API' indicate creation and transmission of a message to an external recipient.

Risk signalsAccepts raw HTML/template content (body)

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs whatsapp_send_text safely

PolicyLayer is an MCP gateway: it sits between your AI agents and UnClick, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For whatsapp_send_text, this is the rule to start with:

whatsapp_send_text Rate-limited

whatsapp_send_text stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "whatsapp_send_text": {
      "limits": [
        {
          "counter": "whatsapp_send_text_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect UnClick, apply this rule, and every whatsapp_send_text call is checked against it from then on.

FAQ

Questions about whatsapp_send_text

What does the whatsapp_send_text tool do? +

Send a text message via WhatsApp Business Cloud API. It is categorised as a Write tool in the UnClick MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does whatsapp_send_text accept? +

whatsapp_send_text accepts 5 parameters: to, body, preview_url, bearer_token, phone_number_id. Required: to, body, bearer_token, phone_number_id. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on whatsapp_send_text? +

Register the UnClick MCP server in PolicyLayer and add a rule for whatsapp_send_text: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches UnClick. Nothing to install.

What risk level is whatsapp_send_text? +

whatsapp_send_text is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit whatsapp_send_text? +

Yes. Add a rate_limit block to the whatsapp_send_text rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block whatsapp_send_text completely? +

Set action: deny in the PolicyLayer policy for whatsapp_send_text. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides whatsapp_send_text? +

whatsapp_send_text is provided by the UnClick MCP server (@unclick/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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