This record as markdown: /tools/io-github-dave-london-git/package-clean.md
What package-clean does on Git
AI agents call package-clean to permanently remove resources in Git, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Why package-clean is rated Critical
Cleaning build artifacts removes files from disk. While build artifacts are regeneratable (reducing severity), the operation is irreversible in the moment — files are deleted without an undo mechanism. This maps to Destructive rather than Write, as the action cannot be undone directly.
From the tool's definition Cleans Swift package build artifacts
Attacks that exploit this kind of access
The rule that runs package-clean safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Git, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For package-clean, this is the rule to start with:
package-clean 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 Git, apply this rule, and every package-clean call is checked against it from then on.
Questions about package-clean
Cleans Swift package build artifacts and returns structured result. It is categorised as a Destructive tool in the Git MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Git MCP server in PolicyLayer and add a rule for package-clean: 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 Git. Nothing to install.
package-clean 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 package-clean 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 package-clean. 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.
package-clean is provided by the Git MCP server (Dave-London/Pare). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
More on Git, and thousands of servers like it.
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