matrix_create_room

Create a new room. Rate-limited: 10/hour.

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/matrix-create-room.md

WHAT IT DOES

What matrix_create_room does on Crow

AI agents use matrix_create_room 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 matrix_create_room is rated Medium

This tool creates a new Matrix room, which is a reversible write operation (rooms can be deleted/archived). The rate limiting suggests awareness of abuse potential. Misuse could lead to spam room creation, but it's not inherently destructive or financial.

From the tool's definition Create a new room. Rate-limited: 10/hour.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs matrix_create_room 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 matrix_create_room, this is the rule to start with:

matrix_create_room Rate-limited

matrix_create_room 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": {
    "matrix_create_room": {
      "limits": [
        {
          "counter": "matrix_create_room_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 matrix_create_room call is checked against it from then on.

FAQ

Questions about matrix_create_room

What does the matrix_create_room tool do? +

Create a new room. Rate-limited: 10/hour. 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 matrix_create_room? +

Register the Crow MCP server in PolicyLayer and add a rule for matrix_create_room: 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 matrix_create_room? +

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

Can I rate-limit matrix_create_room? +

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

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

matrix_create_room 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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