Add roles to a group without removing existing ones.
AI agents use superset_group_add_roles to create or update resources in MCP Superset — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your MCP Superset environment.
The tool creates or modifies role assignments for groups, which changes security permissions and access control. This is a reversible write operation (roles can be removed), making it Write rather than Execute. However, the severity is high because misconfiguration of group roles could grant unintended access to sensitive data or administrative functions in the Superset analytics platform.
From the tool's definition Tool name contains 'add' and description states 'Add roles to a group', indicating creation/modification of access control assignments. This modifies group membership and permissions.
Documented attack patterns abuse exactly the kind of access superset_group_add_roles gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and MCP Superset, and nothing reaches the server without passing your rules. This is the rule we recommend for superset_group_add_roles:
{
"version": "1",
"default": "deny",
"tools": {
"superset_group_add_roles": {
"limits": [
{
"counter": "superset_group_add_roles_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}superset_group_add_roles 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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Add roles to a group without removing existing ones. It is categorised as a Write tool in the MCP Superset MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the MCP Superset MCP server in PolicyLayer and add a rule for superset_group_add_roles: 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 MCP Superset. Nothing to install.
superset_group_add_roles 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 superset_group_add_roles 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 superset_group_add_roles. 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.
superset_group_add_roles is provided by the MCP Superset MCP server (mcp-superset). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from MCP Superset, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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137 MCP Superset tools catalogued and risk-classified — across an index of 43,000+ MCP servers.