unifi_list_blocked_clients
Lists clients/devices currently blocked from the network. Each entry includes mac, hostname, name, last_seen, blocked.
This record as markdown: /tools/io-github-sirkirby-unifi-access-mcp/unifi-list-blocked-clients.md
What unifi_list_blocked_clients does on UniFi Access MCP
AI agents call unifi_list_blocked_clients to retrieve information from UniFi Access MCP without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why unifi_list_blocked_clients is rated Low
This tool performs a read-only operation: it retrieves and displays information about blocked network clients. No data is created, modified, deleted, or executed. The output is purely informational (mac, hostname, name, last_seen, blocked status). Misuse would have minimal blast radius — an AI agent could only view the blocked client list, not alter network access control or perform any irreversible actions.
From the tool's definition Tool name contains 'list' and description states it 'Lists clients/devices currently blocked from the network' — a query operation that retrieves and returns data without modification or side effects.
Attacks that exploit this kind of access
The rule that runs unifi_list_blocked_clients safely
PolicyLayer is an MCP gateway: it sits between your AI agents and UniFi Access MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For unifi_list_blocked_clients, this is the rule to start with:
unifi_list_blocked_clients is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect UniFi Access MCP, apply this rule, and every unifi_list_blocked_clients call is checked against it from then on.
Questions about unifi_list_blocked_clients
Lists clients/devices currently blocked from the network. Each entry includes mac, hostname, name, last_seen, blocked. It is categorised as a Read tool in the UniFi Access MCP MCP Server, which means it retrieves data without modifying state.
Register the UniFi Access MCP server in PolicyLayer and add a rule for unifi_list_blocked_clients: 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 UniFi Access MCP. Nothing to install.
unifi_list_blocked_clients is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the unifi_list_blocked_clients 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 unifi_list_blocked_clients. 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.
unifi_list_blocked_clients is provided by the UniFi Access MCP server (pypi:unifi-protect-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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