createDirectMessagesByConversationId

WHAT IT DOES

What createDirectMessagesByConversationId does on Xdevplatform/xmcp

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

WHY IT NEEDS A POLICY

Why createDirectMessagesByConversationId needs a policy

The tool creates new message records in a direct messaging system. This is reversible (messages can typically be deleted) and has a defined, bounded scope (writes only to an existing conversation). It does not execute arbitrary code, delete data, or move funds. Severity is medium because misuse could send unwanted messages to users, but the blast radius is limited to messaging rather than system-wide impacts.

From the tool's definition Tool name contains 'create' and description states 'Send a direct message in an existing DM conversation' — this creates/writes new message data to an existing conversation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

createDirectMessagesByConversationId Rate-limited

createDirectMessagesByConversationId 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": {
    "createDirectMessagesByConversationId": {
      "limits": [
        {
          "counter": "createdirectmessagesbyconversationid_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 Xdevplatform/xmcp, so you can run agents against it safely.

FAQ

Questions about createDirectMessagesByConversationId

What does the createDirectMessagesByConversationId tool do? +

Send a direct message in an existing DM conversation. It is categorised as a Write tool in the Xdevplatform/xmcp MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on createDirectMessagesByConversationId? +

Register the Xdevplatform/x MCP server in PolicyLayer and add a rule for createDirectMessagesByConversationId: 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 Xdevplatform/xmcp. Nothing to install.

What risk level is createDirectMessagesByConversationId? +

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

Can I rate-limit createDirectMessagesByConversationId? +

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

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

createDirectMessagesByConversationId is provided by the Xdevplatform/x MCP server (xdevplatform/xmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.