generate_prd · My First MCP Server MCP: Risk & Policy

WHAT IT DOES

What generate_prd does on My First MCP Server

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

WHY IT NEEDS A POLICY

Why generate_prd needs a policy

This tool creates new files (PRDs) in the filesystem, which is a reversible write operation. While it doesn't delete data, it modifies the project structure by adding documentation. Severity is medium because unintended PRD generation could clutter the filesystem and potentially overwrite existing documentation, but effects are reversible (files can be deleted).

From the tool's definition Tool description states it will 'output to /docs folder', indicating file creation/modification. The verb 'Generate' and explicit output location confirm data creation rather than retrieval.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

generate_prd Rate-limited

generate_prd 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": {
    "generate_prd": {
      "limits": [
        {
          "counter": "generate_prd_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 My First MCP Server, so you can run agents against it safely.

FAQ

Questions about generate_prd

What does the generate_prd tool do? +

Generate a comprehensive Project Requirements Document using industry-standard template and output to /docs folder. It is categorised as a Write tool in the My First 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 generate_prd? +

Register the My First MCP Server MCP server in PolicyLayer and add a rule for generate_prd: 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 My First MCP Server. Nothing to install.

What risk level is generate_prd? +

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

Can I rate-limit generate_prd? +

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

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

generate_prd is provided by the My First MCP Server MCP server (sethdavis512/my-first-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.