b2b-saas-starter: Instructions file for Codex

AGENTS.md

b2b-saas-starter AGENTS.md is an instructions file for Codex, OpenCode from brandhaug/b2b-saas-starter. It costs 959 tokens per session, scanned A, original, MIT.

Repository instructions for a Cloudflare-based business software starter. It documents a public site and an authenticated app with workspaces, permissions, APIs, email, webhooks, notifications, auditing, and administration.

In plain words
What is it for?
Use it to navigate the web app, API, background worker, database, authentication, authorization, logging, and capability packages, and to find the relevant instructions for each area.
Why use it?
It points agents to the right documentation and package-specific rules before they change the system. This helps keep shared security, architecture, and design decisions consistent.

Instructions file for CodexOpenCode

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

This is brandhaug/b2b-saas-starter's own configuration. It tells Codex and OpenCode how to work on b2b-saas-starter 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 b2b-saas-starter configures →

Reuse

Borrowing it

Nothing to install: this file belongs to brandhaug/b2b-saas-starter. 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/brandhaug/b2b-saas-starter/master/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/brandhaug/b2b-saas-starter

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 b2b-saas-starter AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/brandhaug/b2b-saas-starter/agents-md.svg)](https://agentmods.dev/instructions/brandhaug/b2b-saas-starter/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/brandhaug/b2b-saas-starter/agents-md"><img src="https://agentmods.dev/badge/instructions/brandhaug/b2b-saas-starter/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 959 This file is loaded in full into every session.
When invoked 959 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 $0.00959 $0.00959
Opus 5 $0.00479 $0.00479
Sonnet 5 $0.00192 $0.00192
Haiku 4.5 $0.00096 $0.00096

Measured today against content hash 49076f39ddea, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

b2b-saas-starter 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 today.

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 · 56 lines

How it starts

The opening of the file, as written. The whole thing — 56 lines — stays where its author put it; the contents beside it link to each section on GitHub.

B2B SaaS Starter

Cloudflare-first B2B SaaS starter. Public site showcases the repo; app demonstrates workspaces.

CONTEXT.md holds the domain language, ARCHITECTURE.md the system map and security model, DESIGN.md the visual identity, docs/adr the decisions.

Project posture

No production users. Refactor freely, rename, and drop stored shapes. No backwards compatibility, deprecation paths, or old-data shims.

For issue/spec implementation, follow the implement skill. For ticket context, read issue-tracker.md.

Intent Node Index

Area Intent Node
Web app apps/web/AGENTS.md
API worker apps/api/AGENTS.md
Background worker apps/background/AGENTS.md
HTTP contract packages/api/AGENTS.md
Capabilities packages/capabilities/AGENTS.md
Database packages/db/AGENTS.md
Authentication packages/auth/AGENTS.md
Authorization packages/authz/AGENTS.md
Email packages/email/AGENTS.md
Environment packages/env/AGENTS.md
Observability packages/logger/AGENTS.md
Typed SDK packages/sdk/AGENTS.md
Lint rules packages/oxlint-plugin/AGENTS.md

Read the full file on GitHub · 56 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. today Changed · -5 lines · -166 tokens per session 49076f39ddea
  2. 2d ago Changed · -14 lines · -197 tokens per session c34eee7f35e2
  3. 3d ago Changed · +16 lines · +240 tokens per session 3a37e0768e02
  4. 8d ago First seen · 59 lines · 1,082 tokens per session scan A bbadcc07f5f0

Subscribe to this mod's changes

b2b-saas-starter AGENTS.md is an instructions file published in the GitHub repository brandhaug/b2b-saas-starter (42 stars, last pushed today), licensed MIT. It adds 959 tokens to every session, about $0.0048 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 2026-08-30.

Related

Other instructions, from other repositories

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

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

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

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

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