access_subscribe_events
Return subscription instructions for event streaming.
This record as markdown: /tools/io-github-sirkirby-unifi-access-mcp/access-subscribe-events.md
What access_subscribe_events does on UniFi Access MCP
AI agents call access_subscribe_events 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 access_subscribe_events is rated Low
This tool retrieves subscription instructions for event streaming—a read operation that queries configuration or setup details without creating, modifying, deleting, or executing operations. While it relates to event monitoring in an access control system, the tool itself only returns subscription metadata/instructions, not actual access control modifications or external operations.
From the tool's definition Tool name 'access_subscribe_events' and description 'Return subscription instructions for event streaming' indicate retrieval of subscription/streaming configuration data with no modification or triggering of actions.
Attacks that exploit this kind of access
The rule that runs access_subscribe_events 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 access_subscribe_events, this is the rule to start with:
access_subscribe_events 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 access_subscribe_events call is checked against it from then on.
Questions about access_subscribe_events
Return subscription instructions for event streaming. 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 access_subscribe_events: 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.
access_subscribe_events 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 access_subscribe_events 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 access_subscribe_events. 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.
access_subscribe_events 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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