create_agent_chat_message · Thenvoi MCP Server MCP

WHAT IT DOES

What create_agent_chat_message does on Thenvoi MCP Server

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

WHY IT NEEDS A POLICY

Why create_agent_chat_message needs a policy

This tool creates messages in a chat system, which is a reversible write operation. Without a detailed description, confidence is moderately reduced, but the name and server context clearly indicate message creation.

From the tool's definition Tool name 'create_agent_chat_message' indicates message creation. Server description states it enables 'send messages with mentions' and 'manage conversation lifecycles.' The action creates new data (messages) in a chat system.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_agent_chat_message Rate-limited

create_agent_chat_message 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": {
    "create_agent_chat_message": {
      "limits": [
        {
          "counter": "create_agent_chat_message_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 Thenvoi MCP Server, so you can run agents against it safely.

FAQ

Questions about create_agent_chat_message

What does the create_agent_chat_message tool do? +

create_agent_chat_message. It is categorised as a Write tool in the Thenvoi MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_agent_chat_message? +

Register the Thenvoi MCP Server MCP server in PolicyLayer and add a rule for create_agent_chat_message: 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 Thenvoi MCP Server. Nothing to install.

What risk level is create_agent_chat_message? +

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

Can I rate-limit create_agent_chat_message? +

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

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

create_agent_chat_message is provided by the Thenvoi MCP Server MCP server (thenvoi/thenvoi-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.