Level up a character. Increases level, HP (roll/average/max/manual), proficiency bonus, and spell slots. Supports custom class hit dice and resource scaling. Multi-level jumps allowed (e.g., 1→5). Batch support for party level-ups. Optionally track new features and spells learned.
AI agents use level_up to create or update resources in ChatRPG — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your ChatRPG environment.
This tool creates or modifies character data within the game context (increases attributes, updates resources). The changes are reversible—a character can be leveled down or stats can be edited again. There is no data deletion, financial impact, code execution, or irreversible destruction.
From the tool's definition The tool 'level_up' modifies character attributes including level, HP, proficiency bonus, and spell slots. The description explicitly states it 'Increases level, HP...
Attacks that exploit this kind of access
Level up a character. Increases level, HP (roll/average/max/manual), proficiency bonus, and spell slots. Supports custom class hit dice and resource scaling. Multi-level jumps allowed (e.g., 1→5). Batch support for party level-ups. Optionally track new features and spells learned. It is categorised as a Write tool in the ChatRPG MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the ChatRPG MCP server in PolicyLayer and add a rule for level_up: 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 ChatRPG. Nothing to install.
level_up is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the level_up 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.
Set action: deny in the PolicyLayer policy for level_up. 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.
level_up is provided by the ChatRPG MCP server (mnehmos/mnehmos.chatrpg.game). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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