Cli Reference

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# CLI reference


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Reference for the `iii` binary and the `iii worker` and `iii console` runtimes it dispatches to. Running `iii` with no subcommand starts the engine. The same information is available from the binaries themselves via `iii --help` and `iii <subcommand> --help`. For a guided overview, see [CLI](../using-iii/cli).

## `iii`

Process communication engine

```text
iii [OPTIONS] [COMMAND]
```

| Option | Description |
| ------ | ----------- |
| `-c, --config <CONFIG>` | Path to the config file [default: config.yaml] |
| `-v, --version` | Print version and exit |
| `--use-default-config` | Run with built-in defaults instead of a config file. Cannot be combined with `--config` |
| `--no-update-check` | Disable background update and security advisory checks |

**Subcommands:**

| Command | Description |
| ------- | ----------- |
| `cloud` | Manage iii Cloud deployments. Dispatches to the external `iii-cloud` binary, which is temporarily maintained outside this repository; run `iii cloud --help` for its current surface. |
| [`console`](#iii-console) | Launch the iii web console. |
| [`project`](#iii-project) | Manage iii projects (init, generate-docker) |
| [`trigger`](#iii-trigger) | Invoke a function on a running iii engine |
| [`update`](#iii-update) | Update iii and managed binaries to their latest versions |
| [`worker`](#iii-worker) | Manage workers (add, remove, list, info). |

### `iii project`

Manage iii projects (init, generate-docker)

```text
iii project <COMMAND>
```

#### `iii project generate-docker`

Generate Docker assets (Dockerfile, docker-compose.yml, .env) for an existing iii project

```text
iii project generate-docker [OPTIONS]
```

| Option | Description |
| ------ | ----------- |
| `-d, --directory <DIRECTORY>` | Target directory (defaults to current directory) |
| `--template-dir <TEMPLATE_DIR>` | Local directory to use for templates instead of fetching from remote (for template development and tests) |

#### `iii project init`

Initialize a new iii project in the current directory

```text
iii project init [OPTIONS] [NAME]
```

| Argument | Description |
| -------- | ----------- |
| `[NAME]` | Target directory for the new project (positional). Ignored when `--directory` is given. The project name is the resolved directory's name |

| Option | Description |
| ------ | ----------- |
| `-d, --directory <DIRECTORY>` | Target directory. Takes precedence over NAME. If neither NAME nor `--directory` is provided, the directory defaults to the current directory |
| `--docker` | Also generate Docker assets (Dockerfile, docker-compose.yml, .env). Equivalent to running `iii project generate-docker` separately |
| `-t, --template <TEMPLATE>` | Scaffold from a named template (e.g. "quickstart"). Triggers the interactive scaffolder TUI |
| `--template-dir <TEMPLATE_DIR>` | Local directory to use for templates instead of fetching from remote (for template development and tests) |
| `--skip-iii` | Skip the iii-engine version compatibility check |
| `--allow-non-empty` | Allow initialization into a non-empty directory. Without this flag, init errors out if the target dir contains anything other than hidden dotfiles (e.g. `.git/`). Re-running init in a directory with `.iii/project.ini` is always allowed (idempotent re-init) |

### `iii trigger`

Invoke a function on a running iii engine

```text
iii trigger [OPTIONS] [FUNCTION_PATH] [KV]...
```

| Argument | Description |
| -------- | ----------- |
| `[FUNCTION_PATH]` | Function path (e.g. `my::fn`, `sandbox::create`). Positional |
| `[KV]...` | Key=value payload tokens (`a=10 b="hello world"`). Combinable with `--json`: kv pairs override individual keys of the json object |

| Option | Description |
| ------ | ----------- |
| `--json <JSON>` | JSON payload (`--json '{"a":1}'`). When combined with kv pairs the json must be an object; kv pairs override its keys (shallow merge) |
| `--address <ADDRESS>` | Engine host address [default: localhost] |
| `--port <PORT>` | Engine WebSocket port [default: 49134] |
| `--timeout-ms <TIMEOUT_MS>` | Max time to wait for the invocation result (milliseconds) [default: 30000] |

<Note>
  `iii trigger <function> --help` additionally queries a running engine for the function's description and request schema. That output depends on which workers are registered and is not part of this page; see [Creating Workers / Functions](../creating-workers/functions#attach-request-and-response-schemas).
</Note>

### `iii update`

Update iii and managed binaries to their latest versions

```text
iii update [OPTIONS] [COMMAND]
```

| Argument | Description |
| -------- | ----------- |
| `[COMMAND]` | Specific command or binary to update (e.g., "console", "self"). Use "self" or "iii" to update only iii. If omitted, updates iii and all installed binaries |

| Option | Description |
| ------ | ----------- |
| `--list-targets` | List the targets you can pass to `iii update [COMMAND]` and exit |

## `iii worker`

iii managed worker runtime

The `iii` binary dispatches `iii worker ...` to the separately installed `iii-worker` runtime; this section documents that runtime's full tree.

```text
iii worker <COMMAND>
```

**Subcommands:**

| Command | Description |
| ------- | ----------- |
| [`add`](#iii-worker-add) | Install a worker from the iii registry, a path to a local worker directory (ex. `./myWorker` with a `iii.worker.yaml` file within it) or by OCI image reference. To create a NEW worker from scratch, use `iii worker init`. By default `add` waits up to 120s for the worker to report ready. After which the worker will continue to boot but the command will return to the shell. See `iii worker status` to continue observing a booting worker and `iii worker logs` for logs |
| [`clear`](#iii-worker-clear) | Clear downloaded worker artifacts from ~/.iii/ (local-only, no engine connection needed). Does not affect a worker's own build artifacts or dependencies (e.g. node_modules, Cargo.lock) |
| [`exec`](#iii-worker-exec) | Run a command inside a running worker's VM. Pipes stdin/stdout/ stderr through and returns the child's exit code. Pass `-t` for an interactive PTY |
| [`init`](#iii-worker-init) | Scaffold a NEW standalone worker repo from scratch. To install an EXISTING worker, use `iii worker add` |
| [`list`](#iii-worker-list) | List all workers and their status |
| [`logs`](#iii-worker-logs) | Show logs from a managed worker container |
| [`reinstall`](#iii-worker-reinstall) | Re-download a worker (equivalent to `add --force`; pass `--reset-config` to also reset its config.yaml entry to registry defaults) |
| [`remove`](#iii-worker-remove) | Remove one or more workers from config.yaml. The engine's file watcher tears down any running sandbox. Artifacts under ~/.iii/managed/\{name\}/ remain; use `iii worker clear {name}` to delete them |
| [`restart`](#iii-worker-restart) | Restart a managed worker: stop if running, then start. By default waits up to 120s for the worker to report ready (same as start) |
| [`sandbox`](#iii-worker-sandbox) | Manage ephemeral sandboxes (create/exec/stop short-lived VMs) |
| [`start`](#iii-worker-start) | Start a previously stopped managed worker container. By default waits up to 120s for the worker to report ready before returning. Workers will continue to start after 120s, see `iii worker status` and `iii worker logs` for tracking workers |
| [`status`](#iii-worker-status) | Show detailed status of one worker (config, sandbox, process, logs). By default refreshes live in place until the worker reaches a success or failure state |
| [`stop`](#iii-worker-stop) | Stop a managed worker container. Stop is treated as a routine, reversible action; running `iii worker start <name>` brings the worker back up |
| [`sync`](#iii-worker-sync) | Install registry-managed workers exactly from iii.lock |
| [`update`](#iii-worker-update) | Update workers in iii.lock to their latest allowed version |
| [`verify`](#iii-worker-verify) | Verify the worker's manifest (iii.worker.yaml) is valid |

### `iii worker add`

Install a worker from the iii registry, a path to a local worker directory (ex. `./myWorker` with a `iii.worker.yaml` file within it) or by OCI image reference. To create a NEW worker from scratch, use `iii worker init`. By default `add` waits up to 120s for the worker to report ready. After which the worker will continue to boot but the command will return to the shell. See `iii worker status` to continue observing a booting worker and `iii worker logs` for logs

```text
iii worker add [OPTIONS] <WORKER[@VERSION]|PATH>...
```

| Argument | Description |
| -------- | ----------- |
| `<WORKER[@VERSION]\|PATH>...` | iii registry worker names (ex. `database` or `pdfkit@1.0.0`), local worker paths (ex. `./my_worker`, a directory containing `iii.worker.yaml`), or Docker / OCI image references (ex. `ghcr.io/org/worker:tag`) |

| Option | Description |
| ------ | ----------- |
| `--reset-config` | Discard the worker's config.yaml entry and recreate it from registry defaults. Plain `add --force` would otherwise keep the entry. Only takes effect together with `--force` on add |
| `-f, --force` | Force re-download: delete existing artifacts before adding |
| `--no-wait` | Don't block waiting for the engine to finish booting the worker |

### `iii worker clear`

Clear downloaded worker artifacts from ~/.iii/ (local-only, no engine connection needed). Does not affect a worker's own build artifacts or dependencies (e.g. node_modules, Cargo.lock)

```text
iii worker clear [OPTIONS] [WORKER]
```

| Argument | Description |
| -------- | ----------- |
| `[WORKER]` | Worker name to clear (omit to clear all) |

| Option | Description |
| ------ | ----------- |
| `-y, --yes` | Skip confirmation prompt |

### `iii worker exec`

Run a command inside a running worker's VM. Pipes stdin/stdout/ stderr through and returns the child's exit code. Pass `-t` for an interactive PTY

```text
iii worker exec [OPTIONS] <WORKER> [-- <COMMAND>...]
```

| Argument | Description |
| -------- | ----------- |
| `<WORKER>` | Worker name whose VM to run the command in |
| `[COMMAND]...` | Program and arguments. Comes after `--`: `iii worker exec pdfkit -- /bin/ls -la /workspace`. First element is the executable; the rest are its argv |

| Option | Description |
| ------ | ----------- |
| `-e, --env <ENV>` | Set an environment variable inside the spawned process (repeatable). `KEY=VALUE` form; anything without `=` is silently skipped |
| `-w, --workdir <WORKDIR>` | Working directory inside the guest. Defaults to the dispatcher's cwd (typically `/workspace`) |
| `-t, --tty` | Allocate a pseudo-terminal. Required for interactive shells and TUI programs; merges stdout/stderr through the PTY master and puts the host terminal in raw mode for the session. Automatically enabled when both stdin and stdout are TTYs (ssh-style); pass `--no-tty` to force pipe mode in that case |
| `--no-tty` | Disable TTY auto-detection and force pipe mode. Use when you want byte-exact output in a terminal session (e.g. capturing structured output from an otherwise-interactive tool) |
| `--timeout <TIMEOUT>` | Kill the process after this long (e.g. `30s`, `5m`, `500ms`). Parsed by the standard `humantime` syntax. On expiry the client sends SIGKILL to the guest session and exits with code 124 (matches coreutils `timeout(1)`), so shell scripts can distinguish a timeout from an ordinary nonzero exit |

### `iii worker init`

Scaffold a NEW standalone worker repo from scratch. To install an EXISTING worker, use `iii worker add`

```text
iii worker init [OPTIONS] [NAME]
```

| Argument | Description |
| -------- | ----------- |
| `[NAME]` | Target directory for the new worker (positional). Ignored when `--directory` is given. The worker name is the resolved directory's name |

| Option | Description |
| ------ | ----------- |
| `-d, --directory <DIRECTORY>` | Target directory. Takes precedence over NAME. If neither NAME nor `--directory` is provided, the directory defaults to the current directory |
| `--template-dir <TEMPLATE_DIR>` | Local directory to use for templates instead of fetching from remote (for template development and tests) |
| `--allow-non-empty` | Allow initialization into a non-empty directory. Re-running init in a directory with `.iii/worker.ini` is always allowed (idempotent re-init) |
| `-l, --language <LANG>` | Worker language (`typescript` \| `javascript` \| `python` \| `rust`). Accepts short aliases (`ts`, `js`, `py`, `rust`, `rs`). When omitted, the user is prompted interactively |
| `--skip-iii` | Skip the iii-engine version compatibility check enforced by the scaffolder. Mirrors the flag on `iii project init` |

### `iii worker list`

List all workers and their status

```text
iii worker list
```

### `iii worker logs`

Show logs from a managed worker container

```text
iii worker logs [OPTIONS] <WORKER>
```

| Argument | Description |
| -------- | ----------- |
| `<WORKER>` | Worker name |

| Option | Description |
| ------ | ----------- |
| `-f, --follow` | Follow log output |
| `--address <ADDRESS>` | Engine host address [default: localhost] |
| `--port <PORT>` | Engine WebSocket port [default: 49134] |

### `iii worker reinstall`

Re-download a worker (equivalent to `add --force`; pass `--reset-config` to also reset its config.yaml entry to registry defaults)

```text
iii worker reinstall [OPTIONS] <WORKER[@VERSION]|PATH>...
```

| Argument | Description |
| -------- | ----------- |
| `<WORKER[@VERSION]\|PATH>...` | iii registry worker names (ex. `database` or `pdfkit@1.0.0`), local worker paths (ex. `./my_worker`, a directory containing `iii.worker.yaml`), or Docker / OCI image references (ex. `ghcr.io/org/worker:tag`) |

| Option | Description |
| ------ | ----------- |
| `--reset-config` | Discard the worker's config.yaml entry and recreate it from registry defaults. Plain `add --force` would otherwise keep the entry. Only takes effect together with `--force` on add |

### `iii worker remove`

Remove one or more workers from config.yaml. The engine's file watcher tears down any running sandbox. Artifacts under ~/.iii/managed/\{name\}/ remain; use `iii worker clear {name}` to delete them

```text
iii worker remove [OPTIONS] <WORKER>...
```

| Argument | Description |
| -------- | ----------- |
| `<WORKER>...` | Worker names to remove (e.g., "pdfkit") |

| Option | Description |
| ------ | ----------- |
| `-y, --yes` | Skip the confirmation prompt when a worker is currently running |

### `iii worker restart`

Restart a managed worker: stop if running, then start. By default waits up to 120s for the worker to report ready (same as start)

```text
iii worker restart [OPTIONS] <WORKER>
```

| Argument | Description |
| -------- | ----------- |
| `<WORKER>` | Worker name to restart |

| Option | Description |
| ------ | ----------- |
| `--no-wait` | Return immediately. Don't block waiting for the worker to report ready |
| `--port <PORT>` | Engine WebSocket port the spawned worker connects back to. Same semantics as `start --port` [default: 49134] |
| `--config <PATH>` | Same as `start --config` |

### `iii worker sandbox`

Manage ephemeral sandboxes (create/exec/stop short-lived VMs)

```text
iii worker sandbox <COMMAND>
```

#### `iii worker sandbox create`

Create a long-lived sandbox and print its id to stdout. Pair with `iii worker sandbox exec <id>` and `iii worker sandbox stop <id>`.

Pipe-friendly: the sandbox id is the only thing on stdout, so you can do `SB=$(iii worker sandbox create python)` in a shell.

```text
iii worker sandbox create [OPTIONS] <IMAGE>
```

| Argument | Description |
| -------- | ----------- |
| `<IMAGE>` | OCI image reference (must match the engine's sandbox allowlist) |

| Option | Description |
| ------ | ----------- |
| `--cpus <CPUS>` | vCPUs allocated to the sandbox VM [default: 1] |
| `--memory <MEMORY>` | Memory in MiB allocated to the sandbox VM [default: 512] |
| `--idle-timeout <SECS>` | Auto-stop the sandbox after this many seconds of exec inactivity. Omit to use the engine's default |
| `--name <NAME>` | Human-readable label for the sandbox (shown in `list`) |
| `--network` | Enable guest network access. Default follows the engine's sandbox policy (typically disabled) |
| `-e, --env <KEY=VALUE>` | Set an environment variable inside the guest. Repeatable, `KEY=VALUE` form; entries without `=` are silently skipped |
| `--port <PORT>` | Engine WebSocket port [default: 49134] |

#### `iii worker sandbox download`

Copy a file out of a running sandbox to a local path.

Streams bytes through an iii data channel. Writes to `LOCAL_PATH` on disk (or stdout when `LOCAL_PATH` is `-`).

Examples: iii worker sandbox download \<SB> /workspace/output.json ./output.json iii worker sandbox download \<SB> /workspace/build.tar - | tar -tf -

```text
iii worker sandbox download [OPTIONS] <SANDBOX_ID> <REMOTE_PATH> <LOCAL_PATH>
```

| Argument | Description |
| -------- | ----------- |
| `<SANDBOX_ID>` | Sandbox id from `iii worker sandbox create` / `iii worker sandbox list` |
| `<REMOTE_PATH>` | Source path inside the sandbox |
| `<LOCAL_PATH>` | Destination path on the host. Use `-` to write to stdout |

| Option | Description |
| ------ | ----------- |
| `--port <PORT>` | Engine WebSocket port [default: 49134] |

#### `iii worker sandbox exec`

Run a command inside an already-running sandbox.

Pipe-mode only. Pair with `iii worker sandbox create` for the sandbox id. For interactive TTY sessions, use `iii worker exec` against a managed worker instead.

```text
iii worker sandbox exec [OPTIONS] <SANDBOX_ID> [COMMAND]...
```

| Argument | Description |
| -------- | ----------- |
| `<SANDBOX_ID>` | Sandbox id from `iii worker sandbox create` / `iii worker sandbox list` |
| `[COMMAND]...` | Program and arguments to exec inside the sandbox. Comes after `--`: `iii worker sandbox exec <id> -- python3 -c 'print(2+2)'` |

| Option | Description |
| ------ | ----------- |
| `--timeout <TIMEOUT>` | Kill the child after this long (e.g. `30s`, `5m`, `500ms`). Parsed by the standard `humantime` syntax |
| `-e, --env <KEY=VALUE>` | Set an environment variable inside the spawned process. Repeatable, `KEY=VALUE` form; entries without `=` are silently skipped |
| `--port <PORT>` | Engine WebSocket port [default: 49134] |

#### `iii worker sandbox list`

List every sandbox the daemon knows about.

The daemon's list RPC is owner-scoped for multi-tenant SDK callers, but `iii worker sandbox` is a local admin tool with no authenticated identity, so the CLI always requests the unscoped view. The `--all` flag is a silent no-op, kept so scripts that pass it from earlier releases keep working.

```text
iii worker sandbox list [OPTIONS]
```

| Option | Description |
| ------ | ----------- |
| `--port <PORT>` | Engine WebSocket port [default: 49134] |

#### `iii worker sandbox run`

Create a one-shot sandbox, run a command inside it, and stop it. For multi-step workflows (agent loops, REPLs) use `create` + `exec` + `stop` instead

```text
iii worker sandbox run [OPTIONS] <IMAGE> [COMMAND]...
```

| Argument | Description |
| -------- | ----------- |
| `<IMAGE>` | OCI image reference (must match the engine's sandbox allowlist) |
| `[COMMAND]...` | Program and arguments to exec inside the sandbox |

| Option | Description |
| ------ | ----------- |
| `--cpus <CPUS>` | vCPUs allocated to the sandbox VM [default: 1] |
| `--memory <MEMORY>` | Memory in MiB allocated to the sandbox VM [default: 512] |
| `--port <PORT>` | Engine WebSocket port [default: 49134] |

#### `iii worker sandbox stop`

Stop a sandbox by id, waiting for the reaper to finish

```text
iii worker sandbox stop [OPTIONS] <SANDBOX_ID>
```

| Argument | Description |
| -------- | ----------- |
| `<SANDBOX_ID>` | Sandbox id returned by `sandbox create` / `sandbox list` |

| Option | Description |
| ------ | ----------- |
| `--port <PORT>` | Engine WebSocket port [default: 49134] |

#### `iii worker sandbox upload`

Copy a local file into a running sandbox.

Streams bytes through an iii data channel; no JSON-envelope size cap. Reads `LOCAL_PATH` from disk (or stdin when `LOCAL_PATH` is `-`) and writes atomically (temp file + fsync + rename) to `REMOTE_PATH` inside the sandbox.

Examples: iii worker sandbox upload \<SB> ./script.js /workspace/script.js tar -cf - ./srcdir | iii worker sandbox upload \<SB> - /workspace/src.tar

```text
iii worker sandbox upload [OPTIONS] <SANDBOX_ID> <LOCAL_PATH> <REMOTE_PATH>
```

| Argument | Description |
| -------- | ----------- |
| `<SANDBOX_ID>` | Sandbox id from `iii worker sandbox create` / `iii worker sandbox list` |
| `<LOCAL_PATH>` | Source path on the host. Use `-` to read from stdin |
| `<REMOTE_PATH>` | Destination path inside the sandbox |

| Option | Description |
| ------ | ----------- |
| `--mode <MODE>` | File mode (octal) applied to the destination after the rename [default: 0644] |
| `--parents` | Create parent directories of `REMOTE_PATH` if they're missing |
| `--port <PORT>` | Engine WebSocket port [default: 49134] |

### `iii worker start`

Start a previously stopped managed worker container. By default waits up to 120s for the worker to report ready before returning. Workers will continue to start after 120s, see `iii worker status` and `iii worker logs` for tracking workers

```text
iii worker start [OPTIONS] <WORKER>
```

| Argument | Description |
| -------- | ----------- |
| `<WORKER>` | Worker name to start |

| Option | Description |
| ------ | ----------- |
| `--no-wait` | Return immediately. Don't block waiting for the worker to report ready |
| `--port <PORT>` | Engine WebSocket port the spawned worker connects back to. Defaults to DEFAULT_PORT; the engine passes its configured iii-worker-manager port when auto-spawning external workers so non-default manager ports don't silently break connectivity [default: 49134] |
| `--config <PATH>` | YAML config forwarded to the spawned worker binary as `--config <path>`. Binary workers only; OCI workers warn and ignore |

### `iii worker status`

Show detailed status of one worker (config, sandbox, process, logs). By default refreshes live in place until the worker reaches a success or failure state

```text
iii worker status [OPTIONS] <WORKER>
```

| Argument | Description |
| -------- | ----------- |
| `<WORKER>` | Worker name |

| Option | Description |
| ------ | ----------- |
| `--no-watch` | Print status and exit immediately (no live refresh) |

### `iii worker stop`

Stop a managed worker container. Stop is treated as a routine, reversible action; running `iii worker start <name>` brings the worker back up

```text
iii worker stop [OPTIONS] <WORKER>
```

| Argument | Description |
| -------- | ----------- |
| `<WORKER>` | Worker name to stop |

| Option | Description |
| ------ | ----------- |
| `-y, --yes` | Backward-compat no-op. Stop never prompts; the flag is kept so scripts that already pass `-y` keep working |

### `iii worker sync`

Install registry-managed workers exactly from iii.lock

```text
iii worker sync [OPTIONS]
```

| Option | Description |
| ------ | ----------- |
| `--frozen` | Verify lockfile dependencies without mutating local files. Useful for validation in CICD |

### `iii worker update`

Update workers in iii.lock to their latest allowed version

```text
iii worker update [WORKER]
```

| Argument | Description |
| -------- | ----------- |
| `[WORKER]` | Optional worker name to update. If omitted, updates every worker in iii.lock |

### `iii worker verify`

Verify the worker's manifest (iii.worker.yaml) is valid

```text
iii worker verify [OPTIONS]
```

| Option | Description |
| ------ | ----------- |
| `--strict` | Also check dependency declarations against locked versions |

## `iii console`

Developer console for the iii engine

The `iii` binary dispatches `iii console ...` to the separately installed `iii-console` binary (downloaded on first use); the same binary can also be invoked directly as `iii-console`.

```text
iii console [OPTIONS]
```

| Option | Description |
| ------ | ----------- |
| `-p, --port <PORT>` | Port to run the console server on [default: 3113] |
| `--host <HOST>` | Host to bind the console server to [default: 127.0.0.1] |
| `--engine-host <ENGINE_HOST>` | Host where the iii engine is running [default: 127.0.0.1] |
| `--engine-port <ENGINE_PORT>` | Port for the iii engine REST API [default: 3111] |
| `--ws-port <WS_PORT>` | Port for the iii engine WebSocket [default: 3112] |
| `--bridge-port <BRIDGE_PORT>` | Engine WebSocket port the console registers its worker functions on [default: 49134] |
| `--no-otel` | Disable OpenTelemetry tracing, metrics, and logs export [env: OTEL_DISABLED] |
| `--otel-service-name <OTEL_SERVICE_NAME>` | OpenTelemetry service name (default: iii-console) [default: iii-console] [env: OTEL_SERVICE_NAME] |
| `--enable-flow` | Enable the experimental flow visualization page [env: III_ENABLE_FLOW] |