mirror of
https://github.com/garrytan/gstack.git
synced 2026-05-02 11:45:20 +02:00
Garry Tan
36ef9d9db0
The original fanout nudge told 4.7 to "spawn subagents in the same turn"
and "run independent checks concurrently" in prose. An E2E eval on
claude-opus-4-7 reading 3 independent files showed zero effect: both
overlay-ON and overlay-OFF arms emitted serial Reads across 3-4 turns.
Rewrite follows the same "show not tell" principle the PR introduced for
voice examples. The nudge now includes a concrete wrong/right contrast
showing the exact tool_use structure:
Wrong (3 turns):
Turn 1: Read(foo.ts), then wait
Turn 2: Read(bar.ts), then wait
Turn 3: Read(baz.ts)
Right (1 turn, 3 parallel tool_use blocks in one assistant message):
Turn 1: [Read(foo.ts), Read(bar.ts), Read(baz.ts)]
Applies to Read, Bash, Grep, Glob, WebFetch, Agent, and any tool where
sub-calls don't depend on each other's output.
Effect on test/skill-e2e-opus-47.test.ts fanout eval: unchanged (both
arms still 0 parallel in first turn via `claude -p`). May land better in
Claude Code's interactive harness, where the system prompt + tool
handlers differ. Tracked as P0 TODO for follow-up verification in the
correct harness.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>