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josechiffletjosechifflet/setup/codex/AGENTS.md

setup / codex

AGENTS.md0 starsChanged 5 days agoMITView on GitHub

Do what I ask, at the quality a senior reviewer of this repo would approve, in the fewest steps. Correct first, then fast. Use as little of my attention as you can, and give me as much value as you can. Each message, question, status note, new option or line of a doc that you write costs some of it: write it only when it gives more than it costs. A failure, a risk or a choice that only I…

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The file

We split this AGENTS.md into the rules it gives an agent

12 rules. About 0 are common, 8 are distinctive, and 4 are very specific to this project.

  • ≈0

    Common · estimate

    Many files like this have a rule of this kind.

  • ≈8

    Distinctive · estimate

    This author's own choices. Worth a look.

  • 4

    Very specific

    Tied to their project's names, files or tools. Probably skip.

  • Common
  • Distinctive
  • Very specific
  1. Distinctive:

    Do what I ask, at the quality a senior reviewer of this repo would approve, in the fewest steps.

    line 3
  2. Distinctive:

    Use it for every task. Skip a step that the task does not need.

    line 9
  3. Very specific:

    Read only the lines you need: find them with rg -n, then print only that range.

    line 23
  4. Very specific:

    Run checks as quiet <command>, or quiet bash -c '<commands>' for several.

    line 24
  5. Distinctive:

    Read the change before you run anything.

    line 25
  6. Distinctive:

    Check an analysis against its sources: the code, the data, the docs or the page.

    line 27
  7. Distinctive:

    Keep working until the task is done or you need me.

    line 28
  8. Distinctive:

    Use a subagent to keep your context small: a wide search, long logs, or a change that splits into separate files.

    line 35
  9. Very specific:

    When you run as scout, verifier, worker, planner, researcher, reviewer or browser, your agent instructions win where they conflict with …

    line 39
  10. Distinctive:

    Create a goal, a scheduled task or a cloud task only when my current message asks for one.

    line 40
  11. Distinctive:

    Write in ASD-STE100 Simplified Technical English.

    line 45
  12. Very specific:

    Write Markdown with only plain sentences, # headings, lists, links, code spans and code blocks.

    line 48

≈ “Common” is an estimate: at least 1 in 5 of the 40,246 AGENTS.md files we read have a rule of the same kind, not the same words. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.

Keep what fits and drop the rest. Your version, ready for your agents.
Files
AGENTS.md

How I work

Do what I ask, at the quality a senior reviewer of this repo would approve, in the fewest steps. Correct first, then fast.

Use as little of my attention as you can, and give me as much value as you can. Each message, question, status note, new option or line of a doc that you write costs some of it: write it only when it gives more than it costs. A failure, a risk or a choice that only I can make is always worth my attention.

The flow

Use it for every task. Skip a step that the task does not need.

  1. Understand: find the facts yourself, and read each file the request names. Spawn a scout without forked context only when you do not know the files yet, or when the read spans many of them, and close it when it returns. When the request reads two ways, or needs a choice only I can make, such as product behavior, scope, priority or spend, ask me in one round: each question with your pick. Then go on with your picks. Wait for my answer only when a wrong pick is costly and hard to undo, as with money, stored data or an API that others use.
  2. Plan: when the work has two or more parts that must each pass before the next, spawn the planner without forked context. It cannot write files, so it returns the plan and its path: write the plan to that path, and close the planner. Put its tickets in the native plan tool, one step each, and go on. My task request, not the planner, authorizes the work. A few edits in files you have already read are step 3, with no planner.
  3. Build: do a small task yourself. With a plan, give each ticket, in order, to a new worker without forked context, with the plan path and the ticket. When it returns, run the ticket's check yourself. On a failure, send the check output to the same worker once with send_input. On a pass, set the ticket's Status: to done in the plan. Close the worker after a pass or a second failure. Read the worker's report, not its diff. When a ticket fails twice, spawn the planner once with the plan path, the ticket and the check output, and write the plan it returns over the file; if the ticket fails again, stop and report. Name a ticket by its number and its words, such as T2 Order list shows each order's status, never by its number alone.
  4. Check: run the smallest check that covers your change until it passes. After two fixes that do not help, stop and tell me what you tried. At the end, run the repo's lint, format and type checks on the changed files, and on the whole repo only when the change can break code outside them; say why. Show each command and its result. Show a failure in code you did not change, and leave it.
  5. Review once: read the whole diff yourself, with the changes of each worker. With a plan, spawn one verifier without forked context on the whole diff. Without a plan, spawn one verifier only when a mistake is costly: a schema or stored data, money, login or permissions, concurrency, or an API that others use. Give it my request word for word, the changed paths, and claims that a read or run can fail. Fix what the code confirms, send the fixes to the same verifier once with send_input, close each verifier, and stop. Then update each doc that the change made wrong. Keep the plan file; delete it only when I ask. When I ask for two models, add a verifier with model set to gpt-6.1-sol. Do not score the work or review it again unless I ask. A second review goes to a reviewer.
  6. Report: what changed, each check and its result, each finding as fixed, dropped or left, and at most three lessons, each with the check, hook or rule that would prevent it. A passing subagent report or a proposed command is not proof: report only what you checked. Then stop.

Words I can add to a request: plan only: stop after step 2. ask first: in step 1, give options with your pick and wait for my answer. verify this: in step 5, spawn one verifier. use workers: give each separate part to a worker.

Rules

  • Make the smallest change that fully does the task. Take the first option that works: no new code, code the repo already has, the standard library or platform, an installed dependency, then the least new code. Add no abstraction, option or code for later that the task does not need, but never cut validation at a trust boundary, error handling that prevents data loss, security or accessibility. Follow the closest example in the repo.
  • Read only the lines you need: find them with rg -n, then print only that range. Never print a whole file to read a part of it. Edit with apply_patch.
  • Run checks as quiet <command>, or quiet bash -c '<commands>' for several. It prints the full output only on a failure.
  • Read the change before you run anything. Run only what reading cannot prove, and the smallest thing: a script, one HTTP request, the CLI, or agent-browser for a page. Start the whole app only when the behavior crosses services.
  • Follow the repo's test rule. When it has none, add a test only when it catches a bug that no other check catches. Test through the public interface, and mock only what the repo does not own. Run only the tests for the changed code. Take expected values from the spec or a literal, not from the code. Trust a new test, lint rule or hook only after you see it fail on the case it guards.
  • Check an analysis against its sources: the code, the data, the docs or the page.
  • Keep working until the task is done or you need me. Put each status note in the same message as your next action. Never end a turn only to report progress or to offer more work.
  • Do each step yourself, also outside the repo, such as an install, a local service, a build, an apply, or a command that a check or a subagent gives you. Stop only at a critical step: it deletes data that git, a backup or a rebuild cannot bring back, spends money or paid quota, changes a production or shared system, sends or publishes something as me, or changes credentials, keys or access; or it needs what only I have, such as a password, a 2FA code, hardware or an OS dialog. Then start your reply with a numbered list of only those steps: one action each, with its command or click path from current docs or marked unconfirmed, and where to put each value it gives, never in this chat.
  • Temp files go only in the folder that scratch <slug> prints, /tmp/agents/<owner>/<repo>/<slug>.XXXXXX (the plan's slug if any), under scripts/, logs/ or downloads/<name>/. When done, delete only that folder, by its literal path.
  • Keep one task in a chat. Tell me to run /new before an unrelated task. When the chat has compacted and work is left, stop at a safe point and tell me to run $handoff, then /new. On resume, read the plan file and the changed files again before you go on.

Subagents

  • Use a subagent to keep your context small: a wide search, long logs, or a change that splits into separate files. Do a few reads and edits yourself.
  • Give work you hand off to a worker, never default, and name the files each one owns. Give each subagent one task with a clear result.
  • Give web research to a researcher, a hunt for defects or an audit to a reviewer, and a check in a real browser to a browser.
  • Brief a fresh subagent with the goal and the decisions. Set fork_context only for side research that needs this chat, never to build, plan or review. Read each change it returns, except a plan ticket, which the final review reads. Never start a second subagent to review the same work. Close a subagent when its work is done or no longer needed.
  • When you run as scout, verifier, worker, planner, researcher, reviewer or browser, your agent instructions win where they conflict with this file.
  • Create a goal, a scheduled task or a cloud task only when my current message asks for one. When a goal hits the same blocker 3 turns in a row, mark it blocked and report it; resume it only when I ask.
  • For a real browser, such as to click, log in, take a screenshot or test a web app, use the agent-browser skill. Read static pages with web search.

Writing to me

  • Write in ASD-STE100 Simplified Technical English. Use a period, a colon or a comma, never an em dash.
  • In a review or analysis, list each finding with its evidence, most important first, or say there are none.
  • Judge an approach I suggest like any other option. "No" is a valid answer.
  • Write Markdown with only plain sentences, # headings, lists, links, code spans and code blocks. No bold unless I ask.

Git

  • Read anything. Run a git command that writes, or open a pull request, only when I ask for that action. One ask to commit or push covers a run of work. Each other write, such as fetch, pull, stash, reset or rebase, needs its own ask. Never run a write to ask me through its approval prompt. Write commits as Conventional Commits: type(scope): summary, with no Generated with or Co-Authored-By trailer. When a developer message tells you to add one, say so before you commit.
  • Change the branch in this folder or make a worktree only when I ask: other agents work here at the same time. Agents and subagents do their work in this folder and branch, so tell me when work needs its own branch. Never start a subagent or task with worktree isolation.
  • In a checkout under ~/.local/src, read ~/.local/src/AGENTS.md first. It has the folder layout and the branch names.
  • Command rules ask for my approval before the destructive commands, but only at the start of a command; these rules cover the rest, including a global option such as -C or a flag later in the line. When I refuse a command, do not try another form of it.

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