Unshare a blueprint from groups. Args: blueprint_id: ID of the blueprint to unshare group_names: List of group names to remove access from Returns: Unshare operation result
AI agents use unshare_blueprint_with_groups to create or update resources in Ludus FastMCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Ludus FastMCP environment.
This tool modifies access control settings by revoking group access to a blueprint. It's a reversible write operation (access can be re-granted), not a destructive deletion of the blueprint itself. The blast radius is medium since it could disrupt team workflows by removing access to shared resources.
From the tool's definition Unshare a blueprint from groups... remove access from
Documented attack patterns abuse exactly the kind of access unshare_blueprint_with_groups gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Ludus FastMCP, and nothing reaches the server without passing your rules. This is the rule we recommend for unshare_blueprint_with_groups:
{
"version": "1",
"default": "deny",
"tools": {
"unshare_blueprint_with_groups": {
"limits": [
{
"counter": "unshare_blueprint_with_groups_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}unshare_blueprint_with_groups 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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Unshare a blueprint from groups. Args: blueprint_id: ID of the blueprint to unshare group_names: List of group names to remove access from Returns: Unshare operation result. It is categorised as a Write tool in the Ludus FastMCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Ludus Fast MCP server in PolicyLayer and add a rule for unshare_blueprint_with_groups: 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 Ludus FastMCP. Nothing to install.
unshare_blueprint_with_groups 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 unshare_blueprint_with_groups 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 unshare_blueprint_with_groups. 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.
unshare_blueprint_with_groups is provided by the Ludus Fast MCP server (tjnull/ludus-fastmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 201 Ludus FastMCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
201 Ludus FastMCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.