unifi_revoke_voucher
Revoke/delete a hotspot voucher by its ID, preventing further use
This record as markdown: /tools/io-github-sirkirby-unifi-access-mcp/unifi-revoke-voucher.md
What unifi_revoke_voucher does on UniFi Access MCP
AI agents call unifi_revoke_voucher to permanently remove resources in UniFi Access MCP, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Why unifi_revoke_voucher is rated Critical
The tool explicitly deletes/revokes a voucher and prevents further use, making this an irreversible destructive action. Once revoked, any users relying on that voucher lose network access and the voucher cannot be un-revoked.
From the tool's definition Revoke/delete a hotspot voucher by its ID, preventing further use
Attacks that exploit this kind of access
The rule that runs unifi_revoke_voucher 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_revoke_voucher, this is the rule to start with:
unifi_revoke_voucher is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.
The button opens the PolicyLayer dashboard: create your workspace, connect UniFi Access MCP, apply this rule, and every unifi_revoke_voucher call is checked against it from then on.
Questions about unifi_revoke_voucher
Revoke/delete a hotspot voucher by its ID, preventing further use. It is categorised as a Destructive tool in the UniFi Access MCP MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the UniFi Access MCP server in PolicyLayer and add a rule for unifi_revoke_voucher: 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_revoke_voucher is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the unifi_revoke_voucher 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_revoke_voucher. 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_revoke_voucher 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.
More on UniFi Access, and thousands of servers like it.
Across the catalogue