rbac_assign_role
\u03B7.6.1 \u2014 Grant a role to an agent. Roles: reader (read), writer (read+write), admin (read+write+delete), owner (all four). Optional resourceType narrows to one type; optional scope narrows to a name prefix; optional validUntil expires the grant.
This record as markdown: /tools/danielsimonjr-memory-mcp/rbac-assign-role.md
What rbac_assign_role does on Enhanced Knowledge Graph Memory Server
AI agents use rbac_assign_role to create or update resources in Enhanced Knowledge Graph Memory Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Enhanced Knowledge Graph Memory Server environment.
Why rbac_assign_role is rated Medium
An AI agent can call rbac_assign_role faster than any human can review: one bad instruction and it creates or modifies resources in Enhanced Knowledge Graph Memory Server by the hundred, each call as confident as the last.
Risk signalsAdmin/system-level operation
Attacks that exploit this kind of access
The rule that runs rbac_assign_role safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Enhanced Knowledge Graph Memory Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For rbac_assign_role, this is the rule to start with:
rbac_assign_role 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.
The button opens the PolicyLayer dashboard: create your workspace, connect Enhanced Knowledge Graph Memory Server, apply this rule, and every rbac_assign_role call is checked against it from then on.
Questions about rbac_assign_role
\u03B7.6.1 \u2014 Grant a role to an agent. Roles: reader (read), writer (read+write), admin (read+write+delete), owner (all four). Optional resourceType narrows to one type; optional scope narrows to a name prefix; optional validUntil expires the grant. It is categorised as a Write tool in the Enhanced Knowledge Graph Memory Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Enhanced Knowledge Graph Memory Server MCP server in PolicyLayer and add a rule for rbac_assign_role: 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 Enhanced Knowledge Graph Memory Server. Nothing to install.
rbac_assign_role 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 rbac_assign_role 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 rbac_assign_role. 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.
rbac_assign_role is provided by the Enhanced Knowledge Graph Memory Server MCP server (danielsimonjr/memory-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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