shidler: Instructions file for Codex

AGENTS.md

shidler AGENTS.md is an instructions file for Codex, OpenCode from adamwstauffer/shidler. It costs 3,522 tokens per session, scanned A, original, MIT.

Repository instructions for Shidler, a portfolio and course-materials hub, covering working principles, file structure, privacy-sensitive directories, and validation.

In plain words
What is it for?
Use them when editing course materials, portfolio documents, templates, decision records, or scripts that validate Office files and links.
Why use it?
They help agents make focused edits while protecting private records and checking that generated files and referenced paths remain valid. They also discourage unnecessary restructuring.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: reads .claude/ paths; mentions CLAUDE.md; mentions Claude Code.

This is adamwstauffer/shidler's own configuration. It tells Codex and OpenCode how to work on shidler 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 shidler configures →

Reuse

Borrowing it

Nothing to install: this file belongs to adamwstauffer/shidler. 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/adamwstauffer/shidler/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/adamwstauffer/shidler

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 shidler AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/adamwstauffer/shidler/agents-md.svg)](https://agentmods.dev/instructions/adamwstauffer/shidler/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/adamwstauffer/shidler/agents-md"><img src="https://agentmods.dev/badge/instructions/adamwstauffer/shidler/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 3,522 This file is loaded in full into every session.
When invoked 3,522 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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 $0.03522 $0.03522
Opus 5 $0.01761 $0.01761
Sonnet 5 $0.00704 $0.00704
Haiku 4.5 $0.00352 $0.00352

Measured 6d ago against content hash 0f6372f9ee41, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

shidler 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 6d 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 · 175 lines

How it starts

The opening of the file, as written. The whole thing — 175 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Instructions for AI coding agents (Claude Code, Codex CLI, and any other tool that reads this convention) working in this repository. CLAUDE.md is a one-line pointer here — the same AGENTS.md-canonical convention students follow in their portfolio repos.

Working Principles

Adapted from Andrej Karpathy's coding guidelines for this docs/Markdown repository:

  • Think before editing — state assumptions and surface ambiguity instead of guessing silently; offer the simpler option when one exists.
  • Simplicity first — do the task that was asked; no speculative restructuring of courses, templates, or decision memos.
  • Surgical changes — touch only what the request needs, and preserve each file's existing style and formatting (existing template conventions always win). Flag stray issues you notice rather than fixing them unasked; when records document a past change (e.g. a decision memo), update live materials, not the record.
  • Goal-driven — define what "done" looks like, then verify it: recalc.py returns 0 errors, generated Office files validate, referenced paths resolve, no broken links.

Repository Purpose

Unified portfolio and course materials hub for Shidler College of Business (University of Hawaiʻi at Mānoa) courses taught by Adam W. Stauffer. Contains syllabi, assignment frameworks, project templates, branded materials, and professional portfolio documents — all managed via Git/Markdown.

Student-facing tutorials live on the companion Kumu site, https://adamwstauffer.github.io/ai-lms/ (published from the sibling ai-lms repo). This repo's stage briefs and the site's stage pages are kept in sync — a change to one usually implies a change to the other.

Repository Structure

  • courses/ — Subject-first directories (e.g., courses/International-Corporate-Finance/), not course-code-first. See courses/README.md for the Shidler-code-to-directory map. Each subject directory shares one shape: projects/<slug>/ (shared curriculum) + one <CODE[-POPULATION]>/ subfolder per offering (e.g., BUS-629-VEMBA/, FIN-321/). See docs/decisions/2026-07-08-generic-course-directory-naming.md for the full rationale.
  • docs/ — Centralized documentation hub:
    • _branding/ — UH Mānoa design tokens (design.json) and visual reference (design-system.html)
    • templates/ — Reusable assignment templates (memo, spec, case brief, risk memo, prompt log)
    • decisions/ — Strategic decision memos, flat (YYYY-MM-DD-<slug>.md; course-specific ones are YYYY-MM-DD-<course-code>-<slug>.md, e.g. 2026-05-07-bus629-stage2-restructure.md)
    • ai-usage-guidelines.md, writing-style-guide.md, reproducibility-playbook.md
  • BIO.md — Single source of truth for instructor biography; course READMEs link here
  • scripts/ — Repo-level tooling scripts; spreadsheet cleanup pipelines live in scripts/spreadsheets/

Read the full file on GitHub · 175 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. 6d ago First seen · 175 lines · 3,522 tokens per session scan A 0f6372f9ee41

Subscribe to this mod's changes

shidler AGENTS.md is an instructions file published in the GitHub repository adamwstauffer/shidler (10 stars, last pushed yesterday), licensed MIT. It adds 3,522 tokens to every session, about $0.0176 per session on Opus 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 2026-08-31.

Related

Other instructions, from other repositories

next.js AGENTS.md

AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.

vercel/next.js · 7,296 tokens

codex AGENTS.md

AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.

openai/codex · 5,182 tokens

vscode buildNext.instructions.md

Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).

microsoft/vscode · 6,785 tokens

vscode oss-third-party-notices.instructions.md

Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).

microsoft/vscode · 5,001 tokens

langchain AGENTS.md

AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.

langchain-ai/langchain · 4,469 tokens

spec-kit AGENTS.md

AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.

github/spec-kit · 7,104 tokens