This record as markdown: /tools/io-github-dave-london-npm/repo-clone.md
What repo-clone does on Npm
AI agents invoke repo-clone to trigger actions in Npm. 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 repo-clone is rated High
Cloning a repository executes an external git operation that writes files to the local filesystem from a remote source. It triggers an external network operation and modifies the local environment, which qualifies as Execute. The blast radius is high because an AI agent could clone arbitrary/malicious repositories onto the system.
From the tool's definition Clones a GitHub repository... Returns structured data with success status, repo name, target directory, and message.
Attacks that exploit this kind of access
The rule that runs repo-clone safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Npm, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For repo-clone, this is the rule to start with:
repo-clone 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 Npm, apply this rule, and every repo-clone call is checked against it from then on.
Questions about repo-clone
Clones a GitHub repository. Returns structured data with success status, repo name, target directory, and message. It is categorised as a Execute tool in the Npm MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Npm MCP server in PolicyLayer and add a rule for repo-clone: 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 Npm. Nothing to install.
repo-clone 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 repo-clone 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 repo-clone. 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.
repo-clone is provided by the Npm MCP server (Dave-London/Pare). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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