create_feature_set · Sablier MCP Server MCP: Risk & Policy

WHAT IT DOES

What create_feature_set does on Sablier MCP Server

AI agents use create_feature_set 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_feature_set needs a policy

The tool creates or initializes a new feature set (reversible write operation). While the description is empty lowering confidence slightly, the naming pattern and sibling tool ecosystem indicate this generates new data artifacts for financial analysis workflows.

From the tool's definition Tool name 'create_feature_set' indicates data creation/modification. Server context shows financial analysis capabilities (portfolios, derivatives, backtesting).

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_feature_set Rate-limited

create_feature_set 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_feature_set": {
      "limits": [
        {
          "counter": "create_feature_set_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_feature_set

What does the create_feature_set tool do? +

create_feature_set. 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_feature_set? +

Register the Sablier MCP Server MCP server in PolicyLayer and add a rule for create_feature_set: 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_feature_set? +

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

Can I rate-limit create_feature_set? +

Yes. Add a rate_limit block to the create_feature_set 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_feature_set completely? +

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

create_feature_set 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.