Medium Risk

generate_rules

Generate project rules content based on standards. Returns content and suggested save path for user confirmation.

How to control generate_rules ↓

What generate_rules does on MCP Project Standards Server

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

Medium Risk

Why generate_rules needs a policy

This tool creates new rule files or modifies existing ones based on project standards. While it requires user confirmation before saving (mitigating factor), the core function is generative and results in written artifacts. This is Write rather than Execute because it generates static content/configuration rather than running code with side effects.

From the tool's definition Tool generates content (rules) and suggests save paths, indicating it performs create/write operations. The description states 'Returns content and suggested save path for user confirmation,' showing intent to create or modify project files.

Documented attack patterns abuse exactly the kind of access generate_rules gives an agent:

How to control generate_rules

PolicyLayer is an MCP gateway — it sits between your AI agents and MCP Project Standards Server, and nothing reaches the server without passing your rules. This is the rule we recommend for generate_rules:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "generate_rules": {
      "limits": [
        {
          "counter": "generate_rules_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

generate_rules 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.

  1. Create a free account and register MCP Project Standards Server — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
LIMIT THIS TOOL →

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Related tools and policies

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Questions about generate_rules

What does the generate_rules tool do? +

Generate project rules content based on standards. Returns content and suggested save path for user confirmation. It is categorised as a Write tool in the MCP Project Standards 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_rules? +

Register the MCP Project Standards Server MCP server in PolicyLayer and add a rule for generate_rules: 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 MCP Project Standards Server. Nothing to install.

What risk level is generate_rules? +

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

Can I rate-limit generate_rules? +

Yes. Add a rate_limit block to the generate_rules 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_rules completely? +

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

generate_rules is provided by the MCP Project Standards Server MCP server (liliangshan/mcp-server-project-standards). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every MCP Project Standards Server tool call.

Start from MCP Project Standards Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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11 MCP Project Standards Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.

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