I spent a morning hunting for a setting that did not exist.
A while back I turned off Claude's co-authorship trailer in my commits — a deliberate choice at the time. Last week I decided I wanted it back. So I went looking for the switch I'd flipped. ~/.claude/settings.json: no key. settings.local.json: no key. ~/.claude.json, parsed as JSON, top-level plus all 38 project entries: no key. The 27 .claude/settings*.json files scattered across my two working drives: no key. Every CLAUDE.md and AGENTS.md I own: no mentions. Environment variables: nothing. A final sweep of my entire user directory — every *.json and *.md — returned three raw hits: a changelog and two copies of an editor extension's JSON schema. The note I wrote when that finished was two words: "Cero hits reales." Zero real hits.
There was exactly one thing anywhere on disk that turned attribution off, and it was a sentence:
~/.claude/rules/ecc/common/git-workflow.md:12
Note: Attribution disabled globally via ~/.claude/settings.json.
