wa_newsletter_send

Send a message to a WhatsApp Channel/Newsletter (must be admin). Baileys only.

SERVERWA MCP SOURCEdelltrak/wamcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/delltrak-wamcp/wa-newsletter-send.md

WHAT IT DOES

What wa_newsletter_send does on WA MCP

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

RISK

Why wa_newsletter_send is rated Medium

This tool creates/modifies data by sending messages to WhatsApp newsletters/channels. It does not execute arbitrary code (Execute), delete data (Destructive), or involve financial transactions (Financial). The 'send' action is a write operation that transmits information.

From the tool's definition Tool performs 'Send a message to a WhatsApp Channel/Newsletter' — directly creates and transmits a communication message through WhatsApp channels.

Risk signalsAdmin/system-level operation

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs wa_newsletter_send safely

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

wa_newsletter_send Rate-limited

wa_newsletter_send 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": {
    "wa_newsletter_send": {
      "limits": [
        {
          "counter": "wa_newsletter_send_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 WA MCP, apply this rule, and every wa_newsletter_send call is checked against it from then on.

FAQ

Questions about wa_newsletter_send

What does the wa_newsletter_send tool do? +

Send a message to a WhatsApp Channel/Newsletter (must be admin). Baileys only. It is categorised as a Write tool in the WA MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on wa_newsletter_send? +

Register the WA MCP server in PolicyLayer and add a rule for wa_newsletter_send: 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 WA MCP. Nothing to install.

What risk level is wa_newsletter_send? +

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

Can I rate-limit wa_newsletter_send? +

Yes. Add a rate_limit block to the wa_newsletter_send 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 wa_newsletter_send completely? +

Set action: deny in the PolicyLayer policy for wa_newsletter_send. 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 wa_newsletter_send? +

wa_newsletter_send is provided by the WA MCP server (delltrak/wamcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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