sendChatMessage

Send a message in a chat conversation.

SERVERXdevplatform/xmcp SOURCExdevplatform/xmcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/xdevplatform-xmcp/sendchatmessage.md

WHAT IT DOES

What sendChatMessage does on Xdevplatform/xmcp

AI agents use sendChatMessage 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.

RISK

Why sendChatMessage is rated Medium

The tool creates new chat message data which modifies the state of a conversation. This is a Write action rather than Read (it modifies, not just retrieves), Execute (it doesn't run arbitrary code or external operations), Destructive (messages can be deleted or edited, so it's reversible), or Financial (no money movement).

From the tool's definition Tool name is 'sendChatMessage' and description states 'Send a message in a chat conversation.' This is a write operation that creates new data (a chat message) in a reversible manner.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs sendChatMessage safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Xdevplatform/xmcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For sendChatMessage, this is the rule to start with:

sendChatMessage Rate-limited

sendChatMessage 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": {
    "sendChatMessage": {
      "limits": [
        {
          "counter": "sendchatmessage_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Xdevplatform/xmcp, apply this rule, and every sendChatMessage call is checked against it from then on.

FAQ

Questions about sendChatMessage

What does the sendChatMessage tool do? +

Send a message in a chat 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 sendChatMessage? +

Register the Xdevplatform/x MCP server in PolicyLayer and add a rule for sendChatMessage: 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 sendChatMessage? +

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

Can I rate-limit sendChatMessage? +

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

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

sendChatMessage 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.

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