wa_newsletter_follow

Follow a WhatsApp Channel/Newsletter. 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-follow.md

WHAT IT DOES

What wa_newsletter_follow does on WA MCP

AI agents use wa_newsletter_follow 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_follow is rated Medium

Following a channel modifies the user's account state by adding a channel to their followed list. This is a reversible write operation (unfollow would undo it) with no destructive or financial implications. The severity is medium because automated channel following could lead to unwanted information subscriptions or privacy concerns, but the action itself is not destructive and can be reversed.

From the tool's definition Tool name 'wa_newsletter_follow' and description 'Follow a WhatsApp Channel/Newsletter' indicates a state-changing action that creates or modifies a user's subscription/follow relationship with a channel.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs wa_newsletter_follow 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_follow, this is the rule to start with:

wa_newsletter_follow Rate-limited

wa_newsletter_follow 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_follow": {
      "limits": [
        {
          "counter": "wa_newsletter_follow_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_follow call is checked against it from then on.

FAQ

Questions about wa_newsletter_follow

What does the wa_newsletter_follow tool do? +

Follow a WhatsApp Channel/Newsletter. 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_follow? +

Register the WA MCP server in PolicyLayer and add a rule for wa_newsletter_follow: 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_follow? +

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

Can I rate-limit wa_newsletter_follow? +

Yes. Add a rate_limit block to the wa_newsletter_follow 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_follow completely? +

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

wa_newsletter_follow 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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