Launches OpenCode as a live companion on your Tuple call when transcription starts.

When call-transcription-started fires, this trigger opens your preferred terminal and runs tuple connect --harness opencode. Connect resolves the call state, gives OpenCode a context prompt, and points it at the live transcript — so OpenCode catches up on everything said so far, then watches the call as it happens and acts as a sharp third pair.

What it does

tuple connect brings OpenCode into the call and tells it how to follow along, using the tuple CLI's own transcript stream (tuple transcription show --wait). Guided by connect's prompt, OpenCode:

• Logs the call live — a one-line · play-by-play on each batch of new transcript, so you can follow along at a glance.
• Chimes in when it matters — a real interjection for a bug it can see, an ambiguous decision or action item, a correction, or a direct question.
• Answers when addressed — say "OpenCode, ..." (or type into the terminal) and it responds, then keeps listening.
• Summarizes — a checkpoint when recording stops, and a final summary (decisions, action items, open threads) when the call ends.

Because the trigger just hands off to tuple connect, there's nothing call-format-specific in it: how OpenCode reads the call lives in connect's prompt, in the CLI. Nothing is hard-coded about the model either — OpenCode uses whatever you have configured.

Choosing your terminal

By default the trigger opens your system's default handler for .command files. To force a specific terminal, set PREFERRED_TERM at the top of call-transcription-started (or in the environment):

PREFERRED_TERM="iterm"   # ghostty | iterm | alacritty | terminal

The terminal runs launch-sidekick-opencode.command, whose #!/bin/zsh -li shebang sources your shell profile, so tuple and opencode resolve from the same PATH you get in a normal terminal.

Prerequisites

• macOS
• OpenCode installed so opencode works in a new terminal
• The tuple CLI on your interactive shell PATH (with connect and transcription support)
  • Install it from the Tuple app: its Transcription settings have an Install button that links tuple onto your PATH.
• Tuple transcription enabled for the call

Installation

Drop this directory into your Tuple triggers folder:

~/.tuple/triggers/sidekick-opencode/

The trigger fires the next time call transcription starts.

How it works

call-transcription-started fires with no call-specific arguments. This trigger:

1. Creates a working directory per start, ${TMPDIR:-/tmp}/tuple-sidekick-opencode/<timestamp>-<pid>.
2. Writes an executable launch-sidekick-opencode.command wrapper into it.
3. Opens it in your preferred terminal via open (LaunchServices). No AppleScript and no direct binary launch, so it triggers no macOS accessibility prompt and no stray windows.
4. The wrapper starts a login-interactive zsh, cds to that directory, and runs tuple connect --harness opencode.

There is no dedup: each transcription-start gets its own directory, so stopping and restarting transcription spawns a fresh companion while older ones keep running.

For local testing without opening a terminal, set SIDEKICK_OPENCODE_DRY_RUN=1; it writes the launcher and exits.