create_character · RPG Ledger MCP Server MCP: Risk & Policy

WHAT IT DOES

What create_character does on RPG Ledger MCP Server

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

WHY IT NEEDS A POLICY

Why create_character needs a policy

Creating a character is a reversible modification of campaign state—it adds data without permanent deletion or external financial impact. The tool name and server context clearly indicate character creation functionality. Confidence is not higher (0.9+) because the tool description is empty, requiring inference from context.

From the tool's definition Tool name 'create_character' indicates data creation. Server description states it 'manages campaign state including characters' and 'supports campaign mutations', establishing this as a write operation that creates new character entities in RPG session data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_character Rate-limited

create_character 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_character": {
      "limits": [
        {
          "counter": "create_character_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 RPG Ledger MCP Server, so you can run agents against it safely.

FAQ

Questions about create_character

What does the create_character tool do? +

create_character. It is categorised as a Write tool in the RPG Ledger 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_character? +

Register the RPG Ledger MCP Server MCP server in PolicyLayer and add a rule for create_character: 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 RPG Ledger MCP Server. Nothing to install.

What risk level is create_character? +

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

Can I rate-limit create_character? +

Yes. Add a rate_limit block to the create_character 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_character completely? +

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

create_character is provided by the RPG Ledger MCP Server MCP server (sepa79/rpg-ledger-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.