nextcloud_occ
Run a Nextcloud occ command as www-data, for example: status or app:list.
This record as markdown: /tools/mcp-control-plane/nextcloud-occ.md
What nextcloud_occ does on Mcp Control Plane
AI agents invoke nextcloud_occ to trigger actions in Mcp Control Plane. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.
Why nextcloud_occ is rated High
This tool executes external commands (occ CLI) on a Nextcloud instance, which is the defining characteristic of Execute category. While individual occ commands like 'status' and 'app:list' may be read-only, the tool's design permits running any occ command, including destructive operations (app:disable, db:convert-type, files:cleanup, etc.).
From the tool's definition Tool explicitly performs 'Run a Nextcloud occ command as www-data', enabling execution of arbitrary Nextcloud admin commands with www-data privileges.
Attacks that exploit this kind of access
The rule that runs nextcloud_occ safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Mcp Control Plane, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For nextcloud_occ, this is the rule to start with:
nextcloud_occ stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Mcp Control Plane, apply this rule, and every nextcloud_occ call is checked against it from then on.
Questions about nextcloud_occ
Run a Nextcloud occ command as www-data, for example: status or app:list. It is categorised as a Execute tool in the Mcp Control Plane MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Mcp Control Plane MCP server in PolicyLayer and add a rule for nextcloud_occ: 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 Control Plane. Nothing to install.
nextcloud_occ is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the nextcloud_occ 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 nextcloud_occ. 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.
nextcloud_occ is provided by the Mcp Control Plane MCP server (albertik322-sudo/mcp-control-plane). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
More on Mcp Control Plane, and thousands of servers like it.
Across the catalogue