This record as markdown: /tools/io-github-kivanccakmak-yaver/cloud-backup.md
What cloud_backup does on Yaver
AI agents invoke cloud_backup to trigger actions in Yaver. 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 cloud_backup is rated High
Triggering a backup is an executable action that initiates a process with external side effects (cloud storage operations), but it is not destructive (backup is reversible and non-destructive), financial, nor merely a read operation. The medium severity reflects that misuse could waste resources or trigger unintended backup cycles, but the impact is contained and not data-destructive.
From the tool's definition Tool name 'cloud_backup' combined with description 'Trigger a manual cloud backup' indicates it executes a backup operation on external cloud infrastructure.
Attacks that exploit this kind of access
The rule that runs cloud_backup safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Yaver, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For cloud_backup, this is the rule to start with:
cloud_backup 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 Yaver, apply this rule, and every cloud_backup call is checked against it from then on.
Questions about cloud_backup
Trigger a manual cloud backup. It is categorised as a Execute tool in the Yaver MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Yaver MCP server in PolicyLayer and add a rule for cloud_backup: 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 Yaver. Nothing to install.
cloud_backup 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 cloud_backup 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 cloud_backup. 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.
cloud_backup is provided by the Yaver MCP server (yaver-cli). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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