company_a2a_broadcast · Wmux MCP: Risk & Policy

WHAT IT DOES

What company_a2a_broadcast does on Wmux

AI agents invoke company_a2a_broadcast to trigger actions in Wmux. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why company_a2a_broadcast needs a policy

Broadcasting to all agents triggers widespread external operations across the entire agent network. While it doesn't directly execute code or delete data, it can cause all agents to act on the message, creating a high blast radius. The 'Use sparingly' warning reinforces the potential for significant unintended cascading effects.

From the tool's definition 'Broadcast a message to ALL agents in the company' — triggers external operations across all agents simultaneously

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

company_a2a_broadcast Rate-limited

company_a2a_broadcast stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "company_a2a_broadcast": {
      "limits": [
        {
          "counter": "company_a2a_broadcast_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Wmux, so you can run agents against it safely.

FAQ

Questions about company_a2a_broadcast

What does the company_a2a_broadcast tool do? +

Broadcast a message to ALL agents in the company. Use sparingly. It is categorised as a Execute tool in the Wmux MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on company_a2a_broadcast? +

Register the Wmux MCP server in PolicyLayer and add a rule for company_a2a_broadcast: 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 Wmux. Nothing to install.

What risk level is company_a2a_broadcast? +

company_a2a_broadcast is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit company_a2a_broadcast? +

Yes. Add a rate_limit block to the company_a2a_broadcast 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 company_a2a_broadcast completely? +

Set action: deny in the PolicyLayer policy for company_a2a_broadcast. 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 company_a2a_broadcast? +

company_a2a_broadcast is provided by the Wmux MCP server (openwong2kim/wmux). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

// THE FULL RECORD

company_a2a_broadcast is one line of Wmux's registry record.

The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.

Teams ship this data inside their own products. See what a licence covers →