create_entities · Codebase Knowledge Graph MCP Server MCP

WHAT IT DOES

What create_entities does on Codebase Knowledge Graph MCP Server

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

WHY IT NEEDS A POLICY

Why create_entities needs a policy

This tool creates new entities in the knowledge graph, which modifies the stored state of the codebase knowledge graph. While creations are reversible (via delete_entities, a sibling tool), this is fundamentally a Write operation that adds structured data to the system.

From the tool's definition Tool name is "create_entities" and description states "Create multiple new entities in the knowledge graph." The verb "Create" indicates data modification. The tool adds new nodes/entities to a knowledge graph structure, which is a reversible write operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_entities Rate-limited

create_entities 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_entities": {
      "limits": [
        {
          "counter": "create_entities_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 Codebase Knowledge Graph MCP Server, so you can run agents against it safely.

FAQ

Questions about create_entities

What does the create_entities tool do? +

Create multiple new entities in the knowledge graph. It is categorised as a Write tool in the Codebase Knowledge Graph 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_entities? +

Register the Codebase Knowledge Graph MCP Server MCP server in PolicyLayer and add a rule for create_entities: 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 Codebase Knowledge Graph MCP Server. Nothing to install.

What risk level is create_entities? +

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

Can I rate-limit create_entities? +

Yes. Add a rate_limit block to the create_entities 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_entities completely? +

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

create_entities is provided by the Codebase Knowledge Graph MCP Server MCP server (jigneshsuvariya/codenexus-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.