litopys_create · Litopys MCP: Risk & Policy

WHAT IT DOES

What litopys_create does on Litopys

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

WHY IT NEEDS A POLICY

Why litopys_create needs a policy

This tool creates new data structures (nodes) in the graph-based memory system. It is reversible via deletion and has bounded blast radius (creates only what the agent specifies), making it Write rather than Destructive or Execute. The medium severity reflects that uncontrolled node creation could degrade system performance or pollute the knowledge graph, but individual creations are not catastrophic.

From the tool's definition Tool description states 'Create a new node in the knowledge graph', which is a CREATE operation that modifies data by adding new nodes.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

litopys_create Rate-limited

litopys_create 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": {
    "litopys_create": {
      "limits": [
        {
          "counter": "litopys_create_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 Litopys, so you can run agents against it safely.

FAQ

Questions about litopys_create

What does the litopys_create tool do? +

Create a new node in the knowledge graph. Fails if the id already exists. It is categorised as a Write tool in the Litopys MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on litopys_create? +

Register the Litopys MCP server in PolicyLayer and add a rule for litopys_create: 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 Litopys. Nothing to install.

What risk level is litopys_create? +

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

Can I rate-limit litopys_create? +

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

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

litopys_create is provided by the Litopys MCP server (litopys-dev/litopys). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.