brain_create

Create a new brain project. A brain is a portable AI behavior package with knowledge, reasoning patterns, behavior rules, and skills. Example: brain_create({ name:

SERVER0nmcp SOURCE0nmcp

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/io-github-0nork-0nmcp/brain-create.md

WHAT IT DOES

What brain_create does on 0nmcp

AI agents use brain_create to create or update resources in 0nmcp, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your 0nmcp environment.

RISK

Why brain_create is rated Medium

The tool creates a new persistent entity ('brain project') with defined attributes (knowledge, reasoning patterns, behavior rules, skills). This is reversible (can presumably be deleted later), so it falls under Write rather than Destructive.

From the tool's definition Tool name is 'brain_create' and description states 'Create a new brain project', explicitly indicating creation of a new resource (a portable AI behavior package). This is a write operation that modifies system state by adding a new entity.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs brain_create safely

PolicyLayer is an MCP gateway: it sits between your AI agents and 0nmcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For brain_create, this is the rule to start with:

brain_create Rate-limited

brain_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": {
    "brain_create": {
      "limits": [
        {
          "counter": "brain_create_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 0nmcp, apply this rule, and every brain_create call is checked against it from then on.

FAQ

Questions about brain_create

What does the brain_create tool do? +

Create a new brain project. A brain is a portable AI behavior package with knowledge, reasoning patterns, behavior rules, and skills. Example: brain_create({ name:. It is categorised as a Write tool in the 0nmcp MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on brain_create? +

Register the 0n MCP server in PolicyLayer and add a rule for brain_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 0nmcp. Nothing to install.

What risk level is brain_create? +

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

Can I rate-limit brain_create? +

Yes. Add a rate_limit block to the brain_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 brain_create completely? +

Set action: deny in the PolicyLayer policy for brain_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 brain_create? +

brain_create is provided by the 0n MCP server (0nmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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