Create an ability template or character-owned ability
AI agents use create_ability to create or update resources in DMCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your DMCP environment.
This tool creates new game data (ability templates or character abilities) within the RPG game state. Creation of game objects is reversible and falls under Write category. The severity is low because misuse would only affect fictional game state with no real-world impact—there is no access to actual systems, data exfiltration risk, deletion of real data, or financial consequences.
From the tool's definition Tool name 'create_ability' combined with description 'Create an ability template or character-owned ability' indicates data creation.
Documented attack patterns abuse exactly the kind of access create_ability gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and DMCP, and nothing reaches the server without passing your rules. This is the rule we recommend for create_ability:
{
"version": "1",
"default": "deny",
"tools": {
"create_ability": {
"limits": [
{
"counter": "create_ability_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}create_ability 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.
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Create an ability template or character-owned ability. It is categorised as a Write tool in the DMCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the D MCP server in PolicyLayer and add a rule for create_ability: 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 DMCP. Nothing to install.
create_ability 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 create_ability 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 create_ability. 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.
create_ability is provided by the D MCP server (shawnrushefsky/dmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from DMCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
204 DMCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.