company_a2a_send · Wmux MCP: Risk & Policy

WHAT IT DOES

What company_a2a_send does on Wmux

AI agents use company_a2a_send to create or update resources in Wmux — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Wmux environment.

WHY IT NEEDS A POLICY

Why company_a2a_send needs a policy

This tool creates new messages and deposits them into another agent's message queue, which is a reversible write operation. It does not execute code on behalf of the sender, does not delete data, and does not move money.

From the tool's definition 'Send a structured message to another agent by name' — creates/transmits inter-agent communications that modify the state of the receiving agent's queue or inbox.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

company_a2a_send Rate-limited

company_a2a_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": {
    "company_a2a_send": {
      "limits": [
        {
          "counter": "company_a2a_send_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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_send

What does the company_a2a_send tool do? +

Send a structured message to another agent by name. It is categorised as a Write tool in the Wmux MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on company_a2a_send? +

Register the Wmux MCP server in PolicyLayer and add a rule for company_a2a_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 Wmux. Nothing to install.

What risk level is company_a2a_send? +

company_a2a_send is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit company_a2a_send? +

Yes. Add a rate_limit block to the company_a2a_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 company_a2a_send completely? +

Set action: deny in the PolicyLayer policy for company_a2a_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 company_a2a_send? +

company_a2a_send 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_send 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 →