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do-it: Instructions file for Codex

AGENTS.md

do-it AGENTS.md is an instructions file for Codex, OpenCode from tdwhere123/do-it. It costs 897 tokens per session, scanned A, original, MIT.

Repository instructions for do-it, a plugin that packages agent skills, checks, and helper agents for several coding tools from one source tree.

In plain words
What is it for?
Use them when contributing to do-it, especially when changing its skills, hooks, agents, commands, installers, or validation scripts.
Why use it?
They clarify which files are authoritative, how source differs from generated build files, and which language and file-size rules apply.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions subagents; mentions Claude Code; mentions AGENTS.md.

This is tdwhere123/do-it's own configuration. It tells Codex and OpenCode how to work on do-it itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything do-it configures →

not rated 28repo changed 7d ago A scan 897 tokens original MIT
View source ↗ tdwhere123/do-it
Reuse

Borrowing it

Nothing to install: this file belongs to tdwhere123/do-it. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/tdwhere123/do-it/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/tdwhere123/do-it

Made for: Codex, OpenCode.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for do-it AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/tdwhere123/do-it/agents-md/github.svg)](https://agentmods.dev/instructions/tdwhere123/do-it/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/tdwhere123/do-it/agents-md"><img src="https://agentmods.dev/badge/instructions/tdwhere123/do-it/agents-md/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for do-it AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/tdwhere123/do-it/agents-md"><img src="https://agentmods.dev/badge/instructions/tdwhere123/do-it/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 897 This file is loaded in full into every session.
When invoked 897 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00897 $0.00897
Opus 5.5 $0.00359 $0.00359
Sonnet 5.5 $0.00179 $0.00179
Haiku 4.5 $0.00090 $0.00090

Measured 7d ago against content hash 57b708ffdde8, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

do-it AGENTS.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

AGENTS.md · 84 lines

How it starts

The opening of the file, as written. The whole thing — 84 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Canonical agent instructions for this repository. Behavioral rules live in the shipped layers — skills carry judgment (skills/do-it/do-it-code-quality), hooks carry numbers (hooks/write-quality-lint.sh), validators carry drift contracts (scripts/validate-*.mjs). This file holds only what cannot ship: repo-local facts for agents working on do-it itself.

File rules

  • Source and this file are English-only. Paired end-user docs stay bilingual (README.md / README.zh-CN.md, CONTRIBUTING.md).
  • Read and write source as UTF-8 without BOM.
  • Do not read files larger than 30 KB in full; use targeted reads or grep. (install/manage.mjs is over this limit.)

Repository

do-it is a cross-host agent-behavior plugin: skills, advisory/blocking hooks, and scoped subagents shipped to Claude Code, Codex, Cursor, Pi, and Grok Build from one source tree.

Contribution rules (dogfood-first, issue-first, PR template) are load-bearing: CONTRIBUTING.md. Changes without an observed real-world problem get pushed back.

Source of truth vs build artifacts

Source of truth: skills/do-it/, hooks/, agents/*.toml, commands/, install/, scripts/, tests/.

Never edit build artifacts directly; rebuild them instead:

  • Generated skills, hooks, indexes, and compiled output inside plugins/*/ are regenerated by npm run build:generated plus node scripts/build-<host>-plugin.mjs (codex script writes plugins/do-it/).
  • hooks/data/core-context.txt — generated from the bootstrap excerpt in skills/do-it/do-it-core/SKILL.md; hook context must not maintain separate prose.
  • plugins/do-it-pi/agents/*.md — generated from agents/*.toml plus the Pi metadata and coordination wording in scripts/lib/pi-agent-adapter.mjs.
  • index.json, plugins/*/skills/_index.md — generated indexes.
  • .do-it/runtime/ — session state; .pi-subagents/ — run artifacts.

Closed-set contracts

These drift checks run in npm test; touch one side and you must touch all:

Read the full file on GitHub · 84 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 7d ago Changed · +5 lines · +75 tokens per session 57b708ffdde8
  2. 1mo ago Changed · -51 tokens per session c227b9011ca2
  3. 1mo ago First seen · 79 lines · 873 tokens per session scan A 37589fe31e29

Subscribe to this mod's changes

do-it AGENTS.md is an instructions file published in the GitHub repository tdwhere123/do-it (28 stars, last pushed 3d ago), licensed MIT. It adds 897 tokens to every session, about $0.0036 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

agentic-workflowagentsai-agentscodexcodex-clideveloper-tools
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