create_agent_chat_event · Thenvoi MCP Server MCP

WHAT IT DOES

What create_agent_chat_event does on Thenvoi MCP Server

AI agents use create_agent_chat_event 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_event needs a policy

The tool appears to create chat events based on naming conventions and the server's stated capability to 'post execution events'. This is a Write operation (creates data reversibly). Severity is medium because event creation in a chat platform could have side effects on other agents/users, but lacks the irreversibility of Destructive or financial impact.

From the tool's definition Tool name 'create_agent_chat_event' suggests creating/posting events; server description mentions 'post execution events' which aligns with Write operations. No description provided for this specific tool.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_agent_chat_event Rate-limited

create_agent_chat_event 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_event": {
      "limits": [
        {
          "counter": "create_agent_chat_event_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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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_event

What does the create_agent_chat_event tool do? +

create_agent_chat_event. 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_event? +

Register the Thenvoi MCP Server MCP server in PolicyLayer and add a rule for create_agent_chat_event: 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_event? +

create_agent_chat_event 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_event? +

Yes. Add a rate_limit block to the create_agent_chat_event 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_event completely? +

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

create_agent_chat_event 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.