Eco mode for OpenAI Codex (CLI and the ChatGPT desktop app). Cuts 35-59% of the instruction prefix with settings verified against your own build, and delivers behavioural rules through AGENTS.md - the one channel that costs no round trip. Every claim measured, replicated across 6 models and 6 effort levels, with the retractions published.
Skill Claude CodeCodex
Token-frugal mode for Codex - minimize token spend (no preamble turns, no unasked surveys, region reads, batched shell calls) at full task quality. Use when the user mentions tokens, cost, budget, quota, rate limits, or economical operation, in any language. Invoke once; applies for the rest of the thread. Pass…
Skill Claude CodeCodex
Maximum-savings variant of eco - the same frugality rules with a tighter reply budget, for routine chores (rename, small fix, quick lookup, boilerplate). Prefer plain eco for hard or high-stakes work. Works in any language.
Skill Claude CodeCodex
Token-frugal mode for Codex - fewer tokens per turn at full task quality. Use when the user mentions tokens, cost, budget, quota, rate limits, or working economically, in any language. Say nothing about invoking it - read this file, then let your first visible action be the work. Pass "setup" to configure durable…