Signal that you are creating a completely new, unrelated plan. IMPORTANT: Call get_usage_instructions first if you haven\
AI agents use create_new_plan to create or update resources in Overture — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Overture environment.
Creating a plan is a reversible Write operation—plans can be updated, deleted, or replaced. While it does not modify existing plans directly, it creates new data in the system. The severity is medium rather than high because plan creation itself has no external side effects (execution or financial impact); it merely initializes a data structure for review and approval by users.
From the tool's definition The tool description states it signals 'creating a completely new, unrelated plan', which represents creation of a new data entity (a plan). The phrase 'creating a completely new' indicates a Write operation that generates new structured data.
Documented attack patterns abuse exactly the kind of access create_new_plan gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Overture, and nothing reaches the server without passing your rules. This is the rule we recommend for create_new_plan:
{
"version": "1",
"default": "deny",
"tools": {
"create_new_plan": {
"limits": [
{
"counter": "create_new_plan_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}create_new_plan 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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Signal that you are creating a completely new, unrelated plan. IMPORTANT: Call get_usage_instructions first if you haven\. It is categorised as a Write tool in the Overture MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Overture MCP server in PolicyLayer and add a rule for create_new_plan: 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 Overture. Nothing to install.
create_new_plan 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_new_plan 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_new_plan. 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_new_plan is provided by the Overture MCP server (sixhq/overture). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 14 Overture tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
14 Overture tools catalogued and risk-classified — across an index of 42,500+ MCP servers.