generate_cursorrules

THE RISK

Medium Risk

Why generate_cursorrules needs a policy

generate_cursorrules creates or modifies a .cursorrules configuration file. This is a Write operation (reversible creation/modification of data) rather than Destructive, since the file can be edited or deleted afterward.

From the tool's definition Tool description states it 'Generate[s] .cursorrules content' and 'Returns content and save path for user confirmation' — indicating creation of configuration files.

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

POLICY

How to control generate_cursorrules

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_cursorrules:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "generate_cursorrules": {
      "limits": [
        {
          "counter": "generate_cursorrules_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

generate_cursorrules 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.

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

LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More MCP Project Standards Server tools

Destructive api_standards Get, set or delete API interface standards and best practices Destructive development_standards Get, set or delete development standards Execute api_login API login authentication tool that uses environment variables for login credentials. Autom Write database_standards Get, set or delete database standards Write project_structure Get, set or delete project structure in configuration Write download_file Download a file from a URL and save it to a specified path. Supported schemes: http, https Write generate_rules Generate project rules content based on standards. Returns content and suggested save path Write project_info Get or set project information in configuration file

All 11 MCP Project Standards Server tools →

Write tools on other servers

M-Team MCP Server download_torrent YouTube MCP Server generate_video_title Android Forensics ADB MCP Server combine_reports 0xarchive web3_signup

Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about generate_cursorrules

What does the generate_cursorrules tool do? +

Generate .cursorrules content based on project standards. Returns content and 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_cursorrules? +

Register the MCP Project Standards Server MCP server in PolicyLayer and add a rule for generate_cursorrules: 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_cursorrules? +

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

Can I rate-limit generate_cursorrules? +

Yes. Add a rate_limit block to the generate_cursorrules 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_cursorrules completely? +

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

generate_cursorrules 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.

CHECK YOUR STACK →