> ## Documentation Index
> Fetch the complete documentation index at: https://docs.earthity.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Command channel unavailable

> **Reserved** — this code is approved and frozen, but no production route can emit it yet. It is live today in the sandbox reference implementation — see the `servers` entry and `x-sandbox` extension in the spec.

**Status:** `503`

**`field` member:** never present

**Source:** `route`

Reserved: fail-closed behavior for the future dock-command route's own rate limiter/executor channel, mirroring the outbox drain's fail-closed 503 pattern. Approved 2026-08-03; born live in the sandbox reference implementation (its fail-closed KV-unavailable path) — the production route is pending viam task 3.6.