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claude-saas-blueprint: Instructions file for Codex

AGENTS.md

claude-saas-blueprint AGENTS.md is an instructions file for Codex, OpenCode from GlamgarOnDiscord/claude-saas-blueprint. It costs 1,069 tokens per session, scanned A, original, MIT.

A shared AGENTS.md guide for building SaaS applications with a hexagonal architecture, where business logic is kept separate from databases, APIs, authentication, and other integrations. It applies across several coding assistants and defines project identity, models, and conventions.

In plain words
What is it for?
Use it to structure SaaS projects into domain logic, use cases, interfaces, adapters, shared code, and configuration while following the documented model and coding conventions.
Why use it?
It gives agents one common set of architectural and security expectations across different tools. Separating core rules from integrations makes the codebase easier to reason about and change.

Instructions file for CodexOpenCode

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

This is GlamgarOnDiscord/claude-saas-blueprint's own configuration. It tells Codex and OpenCode how to work on claude-saas-blueprint 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 claude-saas-blueprint configures →

not rated 2repo 3mo ago A scan 1,069 tokens original MIT
View source ↗ GlamgarOnDiscord/claude-saas-blueprint
Reuse

Borrowing it

Nothing to install: this file belongs to GlamgarOnDiscord/claude-saas-blueprint. 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/GlamgarOnDiscord/claude-saas-blueprint/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/GlamgarOnDiscord/claude-saas-blueprint

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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Per session 1,069 This file is loaded in full into every session.
When invoked 1,069 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 $0.01069 $0.01069
Opus 5 $0.00535 $0.00535
Sonnet 5 $0.00214 $0.00214
Haiku 4.5 $0.00107 $0.00107

Measured 11d ago against content hash cd2d51410421, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

claude-saas-blueprint 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 11d 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 · 65 lines

How it starts

The opening of the file, as written. The whole thing — 65 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md — claude-saas-blueprint (Cross-Tool)

Source unique des conventions communes à tous les outils IA (Claude Code, Cursor, Copilot, Windsurf, Cline, Aider…). Pour Claude Code, CLAUDE.md importe ce fichier et y ajoute uniquement les spécificités (skills, hooks, memory, MCP).

Identity

Développeur SaaS full-stack senior. Code production-ready. Sécurité par défaut.

Models (Mars 2026)

  • Opus 4.6 : tâches complexes, multi-agent, refactoring. 1M context (beta), 128k output.
  • Sonnet 4.6 : production, coût-efficace, approche Opus. Default recommandé.
  • Haiku 4.5 : sous-agents Explore, triage, haute fréquence.
  • Thinking : adaptive par défaut (budget_tokens déprécié). Paramètre effort: low | medium | high | max.

Architecture — Hexagonale

src/
├── core/           # Logique métier pure, ZERO import externe
│   ├── entities/   # Objets métier + validation Zod
│   ├── usecases/   # 1 fichier = 1 usecase
│   └── ports/      # Interfaces/contrats
├── adapters/       # Implémentations concrètes (db, api, auth, payments)
├── shared/         # Types partagés, utils, constantes
└── config/         # Configuration par environnement

Conventions

  • Fichiers : kebab-case. Types : PascalCase, I prefix interfaces.
  • Max 200 lignes/fichier (composants UI : 150). Pas de any. Imports absolus @/.
  • Erreurs typées toujours. Pas de throw new Error() nu.
  • Zod au boundary (validation des entrées API). Pas de Valibot sauf décision projet explicite.
  • Réponse API : { data, error, meta }.

Workflow APEX

  1. A — Analyze : blast radius, lire types/interfaces. Si >5 fichiers → demander un plan.
  2. P — Plan : 3 lignes. QUOI · POURQUOI · COMMENT.
  3. E — Execute : diffs ciblés. Un commit = un changement logique. Subagents si parallélisable et indépendant.
  4. X — eXamine : tsc --noEmit, tests blast radius, 0 secret, 0 console.log. Fail-stop : 2 échecs consécutifs → arrêt.

SaaS Patterns

  • Multi-tenancy : organizationId + RLS sur chaque table métier.
  • Auth : authn ≠ authz. RBAC par défaut. Sessions DB préférées à JWT pour le web.
  • DB : migrations versionnées. Soft delete (deletedAt). createdAt + updatedAt partout.
  • Sécurité : rate limiting + CSP + HSTS sur les endpoints publics. CSRF sur les formulaires non-stateless.

Read the full file on GitHub · 65 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. 11d ago First seen · 65 lines · 1,069 tokens per session scan A cd2d51410421

Subscribe to this mod's changes

claude-saas-blueprint AGENTS.md is an instructions file published in the GitHub repository GlamgarOnDiscord/claude-saas-blueprint (2 stars, last pushed 3mo ago), licensed MIT. It adds 1,069 tokens to every session, about $0.0053 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.

Backend and APIsClaude Codeagent-skillsai-agentsclinecopilotcursor
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