mark_agent_message_processing · Thenvoi MCP Server MCP

WHAT IT DOES

What mark_agent_message_processing does on Thenvoi MCP Server

AI agents use mark_agent_message_processing 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 mark_agent_message_processing needs a policy

The tool appears to update message metadata or status rather than delete or execute arbitrary code. Marking a message as processed is a reversible write operation. Severity is medium because unauthorized status changes could disrupt conversation workflows, but the impact is confined to metadata state, not destructive.

From the tool's definition Tool name 'mark_agent_message_processing' suggests state modification of a message (marking/updating its processing status). The server enables message management and conversation lifecycle control.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

mark_agent_message_processing Rate-limited

mark_agent_message_processing 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": {
    "mark_agent_message_processing": {
      "limits": [
        {
          "counter": "mark_agent_message_processing_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 mark_agent_message_processing

What does the mark_agent_message_processing tool do? +

mark_agent_message_processing. 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 mark_agent_message_processing? +

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

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

Can I rate-limit mark_agent_message_processing? +

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

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

mark_agent_message_processing 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.