create_scenario · Sablier MCP Server MCP: Risk & Policy

WHAT IT DOES

What create_scenario does on Sablier MCP Server

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

WHY IT NEEDS A POLICY

Why create_scenario needs a policy

The name 'create_scenario' strongly suggests a Write operation that creates a new scenario (e.g., a stress-test or market scenario). The description is empty, which lowers confidence. Given the server context of portfolio analysis and stress-testing, this likely creates a scenario configuration reversibly. No evidence of destructive, financial, or execute behavior from the name alone.

From the tool's definition Tool name 'create_scenario' and empty description. Based on naming convention, it likely creates a new scenario object.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_scenario Rate-limited

create_scenario 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": {
    "create_scenario": {
      "limits": [
        {
          "counter": "create_scenario_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 Sablier MCP Server, so you can run agents against it safely.

FAQ

Questions about create_scenario

What does the create_scenario tool do? +

create_scenario. It is categorised as a Write tool in the Sablier MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_scenario? +

Register the Sablier MCP Server MCP server in PolicyLayer and add a rule for create_scenario: 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 Sablier MCP Server. Nothing to install.

What risk level is create_scenario? +

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

Can I rate-limit create_scenario? +

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

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

create_scenario is provided by the Sablier MCP Server MCP server (sablier-ai/sablier-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.