This record as markdown: /tools/io-github-dave-london-git/uv-install.md
What uv-install does on Git
AI agents invoke uv-install to trigger actions in Git. 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 uv-install is rated High
This tool executes a package installation command that can run arbitrary setup scripts and untrusted code as part of the install process. The explicit warning about untrusted code execution confirms the Execute classification with high severity, as a malicious agent could install malware or trigger harmful code.
From the tool's definition 'Runs uv pip install' and 'WARNING: may execute untrusted code'
Attacks that exploit this kind of access
The rule that runs uv-install 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 uv-install, this is the rule to start with:
uv-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.
The button opens the PolicyLayer dashboard: create your workspace, connect Git, apply this rule, and every uv-install call is checked against it from then on.
Questions about uv-install
Runs uv pip install and returns a structured summary of installed packages. WARNING: may execute untrusted code. It is categorised as a Execute tool in the Git MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Git MCP server in PolicyLayer and add a rule for uv-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 Git. Nothing to install.
uv-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 uv-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 uv-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.
uv-install 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.
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