/set-profile

name: by:set-profile
description: Switch model profile (quality/balanced/budget)
argument-hint: "<quality|balanced|budget>"

/set-profile — Switch Model Profile

Change the model profile used for spawning agents. This controls which Claude model each agent type uses, trading cost for capability.

Instructions

This command does NOT spawn agents. It reads and writes config directly.

Step 1: Validate argument

The argument must be one of: `quality`, `balanced`, `budget`.

If missing or invalid, show usage:

Usage: /by:set-profile <quality|balanced|budget>

Profiles control which models are used for each agent:
  quality  — Best results, highest cost (Opus for most agents)
  balanced — Good results, moderate cost (Sonnet for most agents)
  budget   — Fast iteration, lowest cost (Haiku where possible)

Step 2: Read current config

CONFIG_FILE=".by/config.json"
if [ ! -f "$CONFIG_FILE" ]; then
  mkdir -p .by
  echo '{"model_profile": "balanced"}' > "$CONFIG_FILE"
fi

Read the current config file.

Step 3: Update profile

Write the new model_profile value to `.by/config.json`, preserving any other fields in the config.

Step 4: Display profile table

Show the complete model assignment table for the selected profile:

Model Profile: {selected}

Agent                      quality     balanced    budget
-------------------------  ----------  ----------  ----------
by-research                opus        sonnet      sonnet
by-design                  opus        sonnet      sonnet
by-screening               sonnet      sonnet      haiku
by-campaign                opus        opus        sonnet
by-knowledge               sonnet      haiku       haiku
by-verifier                sonnet      sonnet      sonnet
by-plan-checker            sonnet      sonnet      haiku
by-environment             sonnet      sonnet      haiku
by-lab                     opus        opus        sonnet
by-evaluator               opus        sonnet      sonnet
by-visualization           sonnet      sonnet      haiku
by-diversity               sonnet      sonnet      haiku
by-epitope                 opus        sonnet      sonnet
by-humanization            opus        sonnet      haiku
by-liability-engineer      sonnet      sonnet      haiku
by-formatter               sonnet      haiku       haiku

Highlight the active column.

Step 5: Confirm

Report: "Profile switched to **{selected}**. All future agent spawns will use the models shown above."