Lets an operator stand up a nested Claude Code operator against another room —
a tree of operators — behind hard guardrails:
- Budget(depth, fanout, cost): depth/fanout are hard caps decremented on every
descend(); a leaf (depth 0) or a spent level (fanout 0) refuses to spawn,
stopping a runaway tree. Cost is carried down as a soft ceiling.
- detect_system / install_plan: decide install from what's present; prefer the
documented npm package `@anthropic-ai/claude-code` or a $HH_CLAUDE_INSTALL
override — never a guessed URL.
- Credentials are gated OFF by default: a child authenticates itself unless the
operator explicitly passes allow_creds, and only its own creds, only to a path
it was handed.
- compose_directive bakes the objective, stop conditions and inherited budget
into the child's `claude -p` prompt so it self-limits.
`spawn` op + CLI verb default to a dry-run plan (inspect the tree before growing
it); `--go` launches detached on the host. `up`/`serve` take --depth/--fanout/
--cost. 24 offline tests green; dry-run plan verified live through the socket.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Co-located mode: the operator launches its own podman/docker container and
execs into it out-of-band (argv-identical to the native harness), exposed as
`sbx launch|status|down`, `exec`, `write`, `get`. When granted, it can also
drive the room's broker-owned container directly on the same host.
Relay mode primitive: `keys` injects raw bytes into the shared PTY via the
same `_sbx:input` frame a human driver emits — full keyboard control incl. the
stop-vocabulary (ctrl-c/ctrl-d/ctrl-z/ctrl-\, esc, arrows, pager q). A compact
per-session cheat-sheet (`sandbox.KEYS_HELP`, `keys --help-keys`) documents
what each inject does and how to end a stuck program, token-efficiently.
Gating: exec/write/get refuse a host (`local`) inherited from the room; the
room sandbox is only driven when `granted`. Keystrokes are inert until granted.
17 offline tests green; e2e verified against real podman (launch→exec→write→
get round-trip→teardown) and through the CLI socket.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Invert the agent model: a headless OperatorBridge(Client) owns the
websocket while a Claude Code session drives it via a unix control
socket. Reuses Client SRP/Fernet and AgentBridge's reconnect/serve
shape. Ships an hh-bridge CLI (up/read/say/roster/status/down) with a
seq'd in-RAM inbox + asyncio.Condition long-poll (read --wait) for
in-turn autonomy. ACL/sandbox-status frames are recorded for later
phases. Sandbox drive, delegation and nesting are out of scope here.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>