codesteer-atlas: Instructions file for Codex

AGENTS.md

codesteer-atlas AGENTS.md is an instructions file for Codex, OpenCode from LuisCarlosLopes/codesteer-atlas. It costs 6,326 tokens per session, scanned A, original, MIT.

A set of project instructions for coding agents working on the CodeSteer Atlas repository. It explains which code-search tools to use, which project rules take priority, and how the Python project is managed.

In plain words
What is it for?
Orienting within the project, finding implementations with Atlas search, checking project relationships, rebuilding the search index, and following its testing and setup practices.
Why use it?
It gives an agent a shared way to explore an unfamiliar codebase and follow the repository’s rules. This reduces blind file searching and conflicts between different instruction files.

Instructions file for CodexOpenCode

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

This is LuisCarlosLopes/codesteer-atlas's own configuration. It tells Codex and OpenCode how to work on codesteer-atlas 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 codesteer-atlas configures →

Reuse

Borrowing it

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

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 codesteer-atlas AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/luiscarloslopes/codesteer-atlas/agents-md/github.svg)](https://agentmods.dev/instructions/luiscarloslopes/codesteer-atlas/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/luiscarloslopes/codesteer-atlas/agents-md"><img src="https://agentmods.dev/badge/instructions/luiscarloslopes/codesteer-atlas/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 codesteer-atlas AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/luiscarloslopes/codesteer-atlas/agents-md"><img src="https://agentmods.dev/badge/instructions/luiscarloslopes/codesteer-atlas/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 6,326 This file is loaded in full into every session.
When invoked 6,326 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 $0.06326 $0.06326
Opus 5.5 $0.02530 $0.02530
Sonnet 5.5 $0.01265 $0.01265
Haiku 4.5 $0.00633 $0.00633

Measured 23d ago against content hash 77bfc2fece25, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

codesteer-atlas 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 23d 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 · 305 lines

How it starts

The opening of the file, as written. The whole thing — 305 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Instruções para agentes neste repositório. O Claude Code recebe o mesmo texto porque CLAUDE.md importa este arquivo.

Busca de código (MCP codesteer-atlas)

Use as tools do MCP antes de grep, rg, find, glob ou leitura em massa.

Objetivo Tool
Se orientar num projeto desconhecido (chame primeiro, uma vez) atlas_brief
Pacote da tarefa quando o símbolo/arquivo já é conhecido atlas_context
Onde algo está implementado atlas_search
Conectividade, hubs, rationale e impacto (affected) atlas_graph
Diagnóstico do índice atlas_status
(Re)indexar atlas_index

Quando a tarefa já tem um símbolo ou arquivo, chame atlas_context(target, intent) primeiro (edit / debug / review / understand) em vez de encadear atlas_graph + atlas_brief. Use atlas_graph(mode="affected") para o raio de impacto.

atlas_search (2 passos): retorna só metadados por padrão — localize com path_prefix/language/top_k baixo; depois Read nas linhas ou include_content=true nos poucos hits relevantes. Não chame atlas_status antes: se o índice não existir, a própria tool explica como criá-lo.

grep/Read só depois que o Atlas indicar o arquivo: confirmar string ou erro literal, ler caminho que o usuário já deu, editar, diff, commit, git, CI ou testes. Fallback se o MCP estiver indisponível, a autenticação falhar, ou o índice estiver vazio ou desatualizado.

Índice desatualizado: atlas_status com is_stale: true (HEAD indexado diferente do workspace), reindexar com atlas_index, e só então usar grep/Read como recorte do momento — reindexar de novo ao fim da sessão.

  1. Descoberta → atlas_search (semântico + BM25; só metadados).
  2. Detalhe → Read no intervalo, ou include_content=true nos poucos hits que importam.
  3. Literal → grep/Read quando a string exata importa.
  4. Edição → ferramentas de arquivo e terminal (git, testes).

Frescor e cobertura do índice

Read the full file on GitHub · 305 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. 23d ago Changed · +268 lines · +5,646 tokens per session 77bfc2fece25
  2. 2mo ago First seen · 37 lines · 680 tokens per session scan A 2ac45f5511c8

Subscribe to this mod's changes

codesteer-atlas AGENTS.md is an instructions file published in the GitHub repository LuisCarlosLopes/codesteer-atlas (0 stars, last pushed 20d ago), licensed MIT. It adds 6,326 tokens to every session, about $0.0253 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 2026-08-31.

Related

codesteer-atlas AGENTS.md compared with instructions from other repositories

codesteer-atlas AGENTS.md next to 6 instructions from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
codesteer-atlas AGENTS.mdLuisCarlosLopes/codesteer-atlasInstructions file020d agoMITA6,326Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA9,719GitHub Copilot
vscode oss-third-party-notices.instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA5,516GitHub Copilot
next.js AGENTS.mdvercel/next.jsInstructions file143kyesterdayMITA7,461Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchainInstructions file149ktodayMITA4,680Codex, OpenCode
vscode copilot-instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA3,093GitHub Copilot
vscode model-prompts.instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA2,022GitHub Copilot