kg_create_entity

SERVERCoWork OS SOURCECoWork-OS/CoWork-OS

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/cowork-os/kg-create-entity.md

WHAT IT DOES

What kg_create_entity does on CoWork OS

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

RISK

Why kg_create_entity is rated Medium

The tool modifies data within a local knowledge graph by creating new entities or updating existing ones. These operations are reversible (entities can be deleted or corrected later), so this is Write rather than Destructive.

From the tool's definition Tool description states 'Create or update an entity in the workspace knowledge graph' — this is reversible data modification.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs kg_create_entity safely

PolicyLayer is an MCP gateway: it sits between your AI agents and CoWork OS, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For kg_create_entity, this is the rule to start with:

kg_create_entity Rate-limited

kg_create_entity 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": {
    "kg_create_entity": {
      "limits": [
        {
          "counter": "kg_create_entity_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect CoWork OS, apply this rule, and every kg_create_entity call is checked against it from then on.

FAQ

Questions about kg_create_entity

What does the kg_create_entity tool do? +

Create or update an entity in the workspace knowledge graph. Entities represent people, projects, technologies, services, files, concepts, and other key items. If an entity with the same type and name already exists, it will be updated. It is categorised as a Write tool in the CoWork OS MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on kg_create_entity? +

Register the CoWork OS MCP server in PolicyLayer and add a rule for kg_create_entity: 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 CoWork OS. Nothing to install.

What risk level is kg_create_entity? +

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

Can I rate-limit kg_create_entity? +

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

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

kg_create_entity is provided by the CoWork OS MCP server (CoWork-OS/CoWork-OS). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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