create_feature · Follow Plan MCP Server MCP: Risk & Policy

WHAT IT DOES

What create_feature does on Follow Plan MCP Server

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

WHY IT NEEDS A POLICY

Why create_feature needs a policy

Creating a feature is a Write operation—it adds new data to the project planning system that can be modified or removed later. It has no destructive, financial, or code-execution implications. The blast radius is low since feature creation is a normal, reversible project management operation.

From the tool's definition Tool name 'create_feature' and description 'Create a new feature' indicate data creation. The server description confirms it handles 'feature specification with SQLite persistence', showing this creates reversible records in the database.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_feature Rate-limited

create_feature 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": {
      "limits": [
        {
          "counter": "create_feature_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 Follow Plan MCP Server, so you can run agents against it safely.

FAQ

Questions about create_feature

What does the create_feature tool do? +

Create a new feature. It is categorised as a Write tool in the Follow Plan 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? +

Register the Follow Plan MCP Server MCP server in PolicyLayer and add a rule for create_feature: 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 Follow Plan MCP Server. Nothing to install.

What risk level is create_feature? +

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

Can I rate-limit create_feature? +

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

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

create_feature is provided by the Follow Plan MCP Server MCP server (vibeclasses/follow-plan-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.