stormlight AGENTS.md

stormlight AGENTS.md is an instructions file for Codex, OpenCode from trentkm/stormlight. It costs 4,534 tokens per session, scanned A, original, MIT.

A contributor guide for Stormlight, a pre-release software project. It explains the project’s development practices, work-item tracking, Git worktrees, and verification expectations.

In plain words
What is it for?
Working on Stormlight tasks, creating branches in separate worktrees, tracking issues in GitHub, following its development loop, and running empirical checks.
Why use it?
It gives coding agents consistent rules for making changes, recording follow-up work, and checking real behavior before declaring a task finished.

Instructions file for CodexOpenCode

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add instructions/trentkm/stormlight/agents-md
Clone the repo
git clone --depth 1 https://github.com/trentkm/stormlight

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 stormlight AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/trentkm/stormlight/agents-md.svg)](https://agentmods.dev/instructions/trentkm/stormlight/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/trentkm/stormlight/agents-md"><img src="https://agentmods.dev/badge/instructions/trentkm/stormlight/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 4,534 This file is loaded in full into every session.
When invoked 4,534 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 $0.04534 $0.04534
Opus 5 $0.02267 $0.02267
Sonnet 5 $0.00907 $0.00907
Haiku 4.5 $0.00453 $0.00453

Measured 3d ago against content hash 32ce15e48df1, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

stormlight 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 3d 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 · 381 lines

How it starts

The opening of the file, as written. The whole thing — 381 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Working on Stormlight

Guidance for coding agents and contributors. Design rationale lives in README.md (the Design section) and docs/; this file covers how work gets done.

Philosophy

Stormlight is pre-release. There are no users to break yet, so build things the right way the first time:

  • No half measures, no backwards-compatibility shims, no quick hacks layered on wrong designs. When a fix reveals a design flaw, fix the design, not the symptom.
  • Breaking refactors are welcome.
  • Verify real behavior empirically (run the thing, capture the bytes) rather than building on assumptions about how a provider or terminal behaves.

Tracking work

  • Outstanding work is tracked as GitHub issues. File follow-ups with gh issue create, reference issues in commits, and close them (Fixes #N or gh issue close) when the work lands.
  • Commit and push completed work as it lands; don't let it pile up.
  • Commits carry no AI attribution — no Co-Authored-By trailers.

Work in a worktree

Every task starts in its own git worktree, cut from the freshly fetched origin/main — never in the primary checkout, and never from local main:

git fetch origin
git worktree add -b <branch> --no-track .claude/worktrees/<branch> origin/main

Fetch every time. Branching off local main inherits whatever that checkout last saw, which is stale the moment anyone else's PR merges; origin/main after a fetch is the real tip. --no-track is not optional — a branch created from a remote-tracking ref otherwise adopts origin/main as its upstream, and a later git push either refuses or aims at the wrong branch. With it, the branch starts upstreamless and git push -u origin <branch> does the right thing.

While the work is in flight, keep the branch stacked on current main. Fetch and rebase before you push:

git fetch origin && git rebase origin/main

That keeps the PR a linear diff against the tip rather than a merge knot, and surfaces conflicts while the change is still yours to reshape.

Read the full file on GitHub · 381 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. 3d ago First seen · 381 lines · 4,534 tokens per session scan A 32ce15e48df1

Subscribe to this mod's changes

stormlight AGENTS.md is an instructions file published in the GitHub repository trentkm/stormlight (5 stars, last pushed 5d ago), licensed MIT. It adds 4,534 tokens to every session, about $0.0227 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

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

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

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

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 · 4,345 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

next.js 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