rybbit_create_site · Rybbit MCP: Risk & Policy

WHAT IT DOES

What rybbit_create_site does on Rybbit

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

WHY IT NEEDS A POLICY

Why rybbit_create_site needs a policy

This tool creates a new site configuration in the analytics platform, which is a reversible write operation. It does not delete data (would be Destructive), execute arbitrary code (would be Execute), move money (would be Financial), or merely read data (would be Read). The incomplete description slightly reduces confidence, but the 'create' action clearly maps to Write category.

From the tool's definition Tool name 'rybbit_create_site' and description 'Create a new site in Rybbit' indicate this creates new data. The description appears incomplete ('Use type' cuts off), suggesting the full capability involves creating a reversible configuration object.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

rybbit_create_site Rate-limited

rybbit_create_site 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": {
    "rybbit_create_site": {
      "limits": [
        {
          "counter": "rybbit_create_site_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 Rybbit, so you can run agents against it safely.

FAQ

Questions about rybbit_create_site

What does the rybbit_create_site tool do? +

Create a new site in Rybbit. Use type. It is categorised as a Write tool in the Rybbit MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on rybbit_create_site? +

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

What risk level is rybbit_create_site? +

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

Can I rate-limit rybbit_create_site? +

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

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

rybbit_create_site is provided by the Rybbit MCP server (nks-hub/rybbit-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.