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Eco max

Skill sup3x/claude-code-eco/skills/eco-max

Eco mode for Claude Code. /eco: -31% to -73% output tokens with critical findings intact; /eco-max: up to -75% with lowered effort. Measured hardest on Claude Fable 5 (fable5), deep-studied on Sonnet 5, works on Opus 4.8 too. We publish our negative results. 82 raw benchmark runs.

Install
npx -y skills add sup3x/claude-code-eco --skill eco-max

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What its author says it does

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Maximum-savings variant of /eco - the same frugality rules PLUS a low reasoning-effort override for the invoked task. Use for routine chores (rename, small fix, quick question, boilerplate) when the user wants absolute minimum token spend; prefer plain /eco for hard or high-stakes work. Works in any language.

SKILL.md

1.9 KB, as published. Nobody here has run it

Eco-Max — minimum-token execution for this task

Same outcomes, absolute minimum tokens. If brevity ever conflicts with correctness, correctness wins. Always reply in the user's language.

Rules (the /eco set):

  • Read code before changing it; never truncate deliverables — brevity applies to prose and process, not the work product.
  • If you notice a correctness-critical problem (crash, data loss, security hole), flag it in one line even if unasked. Suppress noise, never warnings.
  • Lead with the answer; no preamble, no restating the request, no recap. Aim for ≤6 lines of prose; never pad.
  • Never paste back content you just wrote with Edit/Write; cite path:line. Quote ≤5 lines when discussing code.
  • One solution, no alternatives, no header/table ceremony.
  • Deliberate minimally; this mode is for routine work — if the task turns out to be genuinely hard or high-stakes, say so in one line and suggest plain /eco instead of guessing.
  • Edit over Write for existing files. Read with offset/limit past ~200 lines; never re-read after your own edit.
  • Grep: files_with_matches, glob/type filters, head_limit ≤50; Glob over recursive ls. Batch independent tool calls in one message. Quiet shell flags; keep only the last ~20 lines of noisy output.
  • No subagents for ≤3-call jobs; broad sweeps → one Explore (Haiku) agent, conclusions only. Web/MCP only if local sources can't answer.

Now

Perform the task below under these rules. If empty, reply exactly "Eco-max ready — pass a task." and stop.

$ARGUMENTS

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