AI agents invoke cancel_scheduled_install to trigger actions in Fortimanager. 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.
The tool name implies cancelling a scheduled install operation, which is an action that triggers or modifies an external operational process. Given the FortiManager context (network policy management), cancelling a scheduled install could disrupt planned network policy deployments. The description is empty, lowering confidence.
From the tool's definition Tool name 'cancel_scheduled_install' and sibling tool 'abort_policy_install' suggest this tool cancels or aborts a scheduled installation operation on FortiManager.
Documented attack patterns abuse exactly the kind of access cancel_scheduled_install gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Fortimanager, and nothing reaches the server without passing your rules. This is the rule we recommend for cancel_scheduled_install:
{
"version": "1",
"default": "deny",
"tools": {
"cancel_scheduled_install": {
"limits": [
{
"counter": "cancel_scheduled_install_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}cancel_scheduled_install 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.
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cancel_scheduled_install. It is categorised as a Execute tool in the Fortimanager MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Fortimanager MCP server in PolicyLayer and add a rule for cancel_scheduled_install: 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 Fortimanager. Nothing to install.
cancel_scheduled_install 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 cancel_scheduled_install 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 cancel_scheduled_install. 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.
cancel_scheduled_install is provided by the Fortimanager MCP server (jmpijll/fortimanager-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Fortimanager, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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584 Fortimanager tools catalogued and risk-classified — across an index of 43,000+ MCP servers.