rybbit_create_funnel · Rybbit MCP: Risk & Policy

WHAT IT DOES

What rybbit_create_funnel does on Rybbit

AI agents use rybbit_create_funnel 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_funnel needs a policy

This is a Write operation because it creates or modifies funnel definitions in the analytics system. While the changes are reversible (funnels can be deleted or updated), the action does alter persistent configuration state. It is not Destructive because overwriting is not permanent deletion, not Execute because it doesn't run arbitrary code or external operations, and not Financial.

From the tool's definition The tool "Save a new named funnel definition" and "Pass an existing funnel report ID to overwrite that funnel" indicates it creates new analytics funnel configurations or modifies existing ones. These are reversible changes to configuration data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

rybbit_create_funnel Rate-limited

rybbit_create_funnel 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_funnel": {
      "limits": [
        {
          "counter": "rybbit_create_funnel_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_funnel

What does the rybbit_create_funnel tool do? +

Save a new named funnel definition. Steps are evaluated in order. Pass an existing funnel report ID to overwrite that funnel instead of creating a new one. 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_funnel? +

Register the Rybbit MCP server in PolicyLayer and add a rule for rybbit_create_funnel: 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_funnel? +

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

Can I rate-limit rybbit_create_funnel? +

Yes. Add a rate_limit block to the rybbit_create_funnel 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_funnel completely? +

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

rybbit_create_funnel 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.