Claude Code v2.1.219 ·
Subagent-delegation nudges can now be suppressed by the model itself
Subagent delegation nudges are now switched off for Opus 5; you can also control them by env var.
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All of v2.1.219
Use it nowTier: how much it should matter to you
3Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
System PromptArea: what it touches
ImprovementsKind: in v2.1.219,
What probably matters to youSection of the release
What
The prompt block that nudges Claude to delegate to subagents can be turned off based on the model, not just by env var, client data or remote config.
Details
- resolution order was env
CLAUDE_CODE_THISTLE_GREBE, then client data, then growthbook; a fourth model-derived resolver was added - the model resolver returns
no_nudges for models carrying the opus_5_prompt_bundle capability, suppressing the "## Delegating to subagents" block - telemetry reports
source: "model" when this path decides
See this entry in the whole of v2.1.219 →
