crow_create_message_group

Create a message group for group conversations. Add contacts by name or Crow ID.

SERVERCrow SOURCEkh0pper/crow

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/kh0pper-crow/crow-create-message-group.md

WHAT IT DOES

What crow_create_message_group does on Crow

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

RISK

Why crow_create_message_group is rated Medium

This tool creates new data structures (message groups) and establishes relationships (adding contacts), which is a reversible write operation. It does not execute arbitrary code, delete data, move funds, or retrieve sensitive information without modification.

From the tool's definition Tool description states 'Create a message group' which is a creation action that modifies data by adding a new conversation group and associating contacts with it.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs crow_create_message_group safely

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

crow_create_message_group Rate-limited

crow_create_message_group 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": {
    "crow_create_message_group": {
      "limits": [
        {
          "counter": "crow_create_message_group_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 Crow, apply this rule, and every crow_create_message_group call is checked against it from then on.

FAQ

Questions about crow_create_message_group

What does the crow_create_message_group tool do? +

Create a message group for group conversations. Add contacts by name or Crow ID. It is categorised as a Write tool in the Crow MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on crow_create_message_group? +

Register the Crow MCP server in PolicyLayer and add a rule for crow_create_message_group: 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 Crow. Nothing to install.

What risk level is crow_create_message_group? +

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

Can I rate-limit crow_create_message_group? +

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

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

crow_create_message_group is provided by the Crow MCP server (kh0pper/crow). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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