# uv-install

Runs uv pip install and returns a structured summary of installed packages. WARNING: may execute untrusted code.

Agent View of the PolicyLayer registry record for `uv-install`. HTML page: https://policylayer.com/tools/io-github-dave-london-pare-python/uv-install

## Facts

- Tool: `uv-install`
- Server: Python (`Dave-London/Pare`) — https://policylayer.com/tools/io-github-dave-london-pare-python.md
- Homepage: https://github.com/Dave-London/Pare
- Risk category: Execute (High risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 12
- Recommended policy verdict: Rate-limited

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `path` | string | no | Working directory |
| `dryRun` | boolean | no | Preview what would be installed without actually installing (--dry-run) |
| `extras` | array | no | Package extras to install (--extra NAME) |
| `noDeps` | boolean | no | Do not install package dependencies (--no-deps) |
| `python` | string | no | Python interpreter version to use (-p VERSION) |
| `compact` | boolean | no | Prefer compact output |
| `upgrade` | boolean | no | Upgrade already-installed packages to the newest version (--upgrade) |
| `editable` | string | no | Path to local package for editable install (-e PATH) |
| `indexUrl` | string | no | Base URL of the Python Package Index (-i URL) |
| `packages` | array | no | Packages to install |
| `reinstall` | boolean | no | Force reinstall of all packages even if already installed (--reinstall) |
| `constraint` | string | no | Path to constraints file for version pinning (-c FILE) |

Parameters from the server's own tool schema.

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "uv-install",
    "arguments": {}
  }
}
```

## Why uv-install is rated High

Installing packages via uv pip install executes package setup scripts and arbitrary code from potentially untrusted sources. The explicit warning about untrusted code execution confirms the Execute classification. The blast radius is high as malicious packages could compromise the environment.

From the tool's own definition: "'Runs uv pip install', 'WARNING: may execute untrusted code'"

Risk signals: Accepts freeform code/query input (python) · Accepts file system path (path) · High parameter count (14 properties)

## Use case

AI agents invoke uv-install to trigger actions in Python. 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.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Python:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "uv-install": {
      "limits": [
        {
          "counter": "uv-install_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Python (13)

- `conda` — Execute — https://policylayer.com/tools/io-github-dave-london-pare-python/conda.md
- `mypy` — Execute — https://policylayer.com/tools/io-github-dave-london-pare-python/mypy.md
- `pip-install` — Execute — https://policylayer.com/tools/io-github-dave-london-pare-python/pip-install.md
- `poetry` — Execute — https://policylayer.com/tools/io-github-dave-london-pare-python/poetry.md
- `pyenv` — Execute — https://policylayer.com/tools/io-github-dave-london-pare-python/pyenv.md
- `pytest` — Execute — https://policylayer.com/tools/io-github-dave-london-pare-python/pytest.md
- `ruff-check` — Execute — https://policylayer.com/tools/io-github-dave-london-pare-python/ruff-check.md
- `uv-run` — Execute — https://policylayer.com/tools/io-github-dave-london-pare-python/uv-run.md
- `black` — Read — https://policylayer.com/tools/io-github-dave-london-pare-python/black.md
- `pip-audit` — Read — https://policylayer.com/tools/io-github-dave-london-pare-python/pip-audit.md
- `pip-list` — Read — https://policylayer.com/tools/io-github-dave-london-pare-python/pip-list.md
- `pip-show` — Read — https://policylayer.com/tools/io-github-dave-london-pare-python/pip-show.md
- `ruff-format` — Read — https://policylayer.com/tools/io-github-dave-london-pare-python/ruff-format.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=io-github-dave-london-pare-python · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-dave-london-pare-python