68 lines
2.8 KiB
Markdown
68 lines
2.8 KiB
Markdown
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# claudebox design
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`claudebox` is a CLI that mints and manages **trust-less, network-isolated VMs
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with Claude Code installed**. It is infrastructure, not a project provisioner.
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See issue #3 for the full reframe and rationale. This doc captures the durable
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design decisions.
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## Principle: separate the tool from the agent
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- **The tool** mints isolated boxes with Claude installed but **unauthenticated**.
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It knows nothing about projects, secrets, recipes, or memory.
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- **The agent** (Claude Code, inside the box) reads an optional `.claudebox/`
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runbook in a cloned repo and acts on it. The recipe's consumer is the
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reasoning agent, not host machinery.
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## Boxes are strictly creds-free
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`claudebox new --name <n>` launches a blank box: everything installed, **no**
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git credentials and **no** Claude credentials. The operator authenticates
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interactively *inside* the box:
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- **Claude** — `claude` → `/login` (paste-a-code OAuth: copy the URL, open it in
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your own browser, paste the code back). Works because the box is outbound-only;
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the tool never handles a token.
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- **Git** — the operator adds their own PAT / `gh auth login` inside the box.
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The tool stores and injects **no** credentials, ever. This dissolves the
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multi-user problem: nothing shared, nothing committed.
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## Snapshots are the reuse mechanism
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Re-authing every fresh box would be toil, so authenticated state is reused via
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snapshots, not a secrets store:
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- `claudebox snapshot <n> [label]` — checkpoint after login + clone.
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- `claudebox new --name <n2> --from <src>[/<snapshot>]` — clone an existing box
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or snapshot (authed state and all). Isolation is preserved: the clone keeps
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the `claude-dev` profile + `claudenet` + ACL.
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- `claudebox restore <n> <snapshot>` — roll a box back to a checkpoint.
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Log in once → snapshot → spin up authed boxes from it.
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## The box announces itself to the agent
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cloud-init installs a global `~/.claude/CLAUDE.md` in every box telling Claude it
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is running in a claudebox (trust-less, ephemeral, creds-free) and to treat a
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repo's `.claudebox/` folder as its bootstrap runbook. No "tell it" step, no host
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execution.
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## `.claudebox/` is optional, agent-facing documentation
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Not host-executed shell. A repo that wants to be easy to stand up in a sandbox
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ships a runbook (prose + optional scripts the agent may run). A repo that does
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not, you set up by hand. The tool enforces no contract; there is no `install`.
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## Isolation (unchanged)
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Dedicated NAT bridge `claudenet` + Incus `claude-isolate` ACL dropping all
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RFC1918/CGNAT/link-local egress, plus host-firewall rules blocking instance →
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host. The instance reaches the internet and nothing else. Entry is `incus exec`
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over the local socket — no inbound path. The VM is the trust boundary.
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## Non-goals
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- No unattended/CI bring-up — the flow is interactive.
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- No credential storage or injection by the tool.
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