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warden-sandbox-cli

v0.1.9

Published

npm wrapper for the Warden sandbox CLI

Readme

warden-sandbox-cli

npm wrapper for the Warden sandbox runtime.

Warden runs your MCP servers in a sandbox that only sees what you grant — a folder, a hostname, nothing more.

Install

npm install -g warden-sandbox-cli

Usage

# Run a server under a sandbox policy
warden run --policy policy.yaml -- node ./my-mcp-server/index.js

# Trace what a server accesses (unsandboxed)
warden trace -- node server.js

# Generate a starter policy from a trace
warden init -- log.json --output policy.yaml

How it works

On first run, the wrapper downloads the correct Warden binary for your platform from GitHub Releases and caches it in ~/.cache/warden/. Subsequent runs use the cached binary directly.

Supported platforms

| OS | Architecture | |---|---| | Linux | amd64, arm64 | | macOS | amd64, arm64 | | Windows | amd64 |

Policy example

command: ["node", "server.js"]

filesystem:
  read: ["./data"]
  write: ["./output"]

network:
  allow: ["api.github.com"]

env:
  allow: ["GITHUB_TOKEN"]

limits:
  memory_mb: 512
  timeout_s: 300

Links

License

MIT