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/btw (alias /side) asks a quick side question about the current session without adding it to conversation history. It is modeled after Claude Code’s /btw, adapted to OpenClaw’s Gateway and multi-channel architecture. 
/btw what changed?
/side what does this error mean?

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What it does

  1. Snapshots the current session as background context (including any in-flight main-run prompt).
  2. Runs a separate, one-shot side query telling the model to answer only the side question and not resume or steer the main task.
  3. Delivers the answer as a live side result, not a normal assistant message.
  4. Never writes the question or answer to session history or chat.history.
The main run, if one is active, is left untouched. For Codex harness sessions, BTW forks the active Codex app-server thread into an ephemeral child thread instead of running a separate provider call. This keeps Codex OAuth and native tool/thread behavior intact, and the forked thread keeps the parent thread’s current approval policy, sandbox, and native tool surface. The forked thread gets a boundary prompt telling the model that everything before it is inherited reference context, not active instructions, and that only messages after the boundary are live. /btw requires an existing Codex thread; send a normal message first. For CLI runtime aliases, BTW invokes the owning CLI backend in one-shot side-question mode: it seeds sanitized conversation context into a fresh CLI invocation with tool bundling and reusable session state disabled, and adds any no-resume/no-tools flags the backend supports. Direct (non-CLI) runtimes use a direct one-shot provider call instead.

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What it does not do

/btw does not create a durable session, continue the unfinished main task, persist question/answer data to transcript history, or survive a reload.

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Delivery model

Normal assistant chat uses the Gateway chat event. BTW uses a separate chat.side_result event so clients cannot mistake it for regular conversation history. Because it is not replayed from chat.history, it disappears after reload.

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Surface behavior

SurfaceBehavior
TUIRendered inline in the chat log, visibly distinct from a normal reply, dismissible with Enter or Esc.
External channelsDelivered as a clearly labeled one-off reply (Telegram, WhatsApp, Discord have no local ephemeral overlay).
Control UI / webGateway emits chat.side_result correctly and it is excluded from chat.history, but Control UI has no consumer yet to render it live in the browser.

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When to use it

Use /btw for a quick clarification, a factual side answer while a long run is still in progress, or a temporary answer that should not enter future session context. 
/btw what file are we editing?
/btw summarize the current task in one sentence
/btw what is 17 * 19?
For anything you want to become part of the session’s future working context, ask normally in the main session instead.

Slash commands

Native command catalog and chat directives.

Thinking levels

Reasoning effort levels for the side-question model call.

Session

Session keys, history, and persistence semantics.

Steer command

Inject a steering message into the active run without ending it.