authgear-server: Instructions file for Codex

AGENTS.md

authgear-server AGENTS.md is an instructions file for Codex, OpenCode from authgear/authgear-server. It costs 3,779 tokens per session, scanned A, original, Apache-2.0.

A repository guide for working on Authgear Server, covering its AGENTS.md instructions, folder layout, documentation, common commands, and local development setup. Authgear Server is the codebase described by these instructions.

In plain words
What is it for?
Use it when navigating or changing the Authgear Server repository, starting local development, reading its documentation map, or choosing commands for common tasks.
Why use it?
It gives a coding agent the project-specific context needed to find the right files and follow the repository's normal development process.

Instructions file for CodexOpenCode

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

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

About the project

Authgear is an open-source identity and authentication service that provides login, account management, multi-factor authentication, passkeys, and single sign-on for applications. SaaS and mobile-app developers can run it themselves or use Authgear Cloud to manage consumer and enterprise user access. The catalogue entries relate to operating and configuring Authgear's authentication workflows.

authgear/authgear-server · 2,133 stars · on GitHub · authgear.com

Reuse

Borrowing it

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

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 authgear-server AGENTS.md

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

Your own site · 80×15
<a href="https://agentmods.dev/instructions/authgear/authgear-server/agents-md"><img src="https://agentmods.dev/badge/instructions/authgear/authgear-server/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 3,779 This file is loaded in full into every session.
When invoked 3,779 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 $0.03779 $0.03779
Opus 5.5 $0.01512 $0.01512
Sonnet 5.5 $0.00756 $0.00756
Haiku 4.5 $0.00378 $0.00378

Measured 10d ago against content hash b7f94a3c25f0, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

authgear-server 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 10d 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 · 227 lines

How it starts

The opening of the file, as written. The whole thing — 227 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

This repository is Authgear Server. Use the repo docs and skills below as the source of truth for agentic work.

Repository layout

authgear-server/
├── cmd/                        # Entry points (main packages)
│   ├── authgear/               # Core auth server binary
│   │   ├── main.go
│   │   ├── server/             # HTTP server wiring
│   │   ├── background/         # Background worker (cron jobs, queues)
│   │   ├── adminapi/           # Admin API server
│   │   ├── config/             # Config commands (validate, migrate)
│   │   └── images/             # Docker image utilities
│   ├── portal/                 # Portal backend binary
│   │   └── main.go
│   └── once/                   # One-shot migration / setup commands
│
├── pkg/                        # Shared Go packages
│   ├── lib/                    # Core business logic (auth flows, OAuth,
│   │   │                         sessions, SAML, OIDC, webhooks, etc.)
│   ├── auth/                   # AuthUI HTTP handlers & webapp routes
│   │   ├── handler/            # Request handlers
│   │   └── webapp/             # Server-side rendered web-app views
│   ├── admin/                  # Admin API GraphQL layer
│   │   └── graphql/
│   ├── portal/                 # Portal backend GraphQL layer
│   │   └── graphql/
│   ├── siteadmin/              # Site-admin API (global administration)
│   ├── api/                    # Shared API types / transport helpers
│   ├── resolver/               # Request resolver middleware
│   ├── util/                   # General-purpose utilities
│   └── images/                 # Image-processing helpers
│
├── authui/                     # AuthUI frontend (React/TypeScript)
│   │                             Compiled output is embedded into the binary.
│   └── src/
│
├── portal/                     # Portal frontend (React/TypeScript)
│   │                             The portal lets tenant admins manage their apps.
│   └── src/
│
├── resources/                  # Static resources embedded into binaries
│   ├── authgear/               # AuthUI templates, translations, assets
│   └── portal/                 # Portal static assets
│
├── e2e/                        # End-to-end test suite
│   └── tests/
│
├── docs/                       # Specs and design documents
│   ├── specs/                  # Feature and API specifications
│   └── api/                    # OpenAPI / schema definitions
│
├── hack/                       # Developer scripts and tooling
├── devtools/                   # Local development helpers
└── scripts/                    # CI / release scripts

Read the full file on GitHub · 227 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. 10d ago Changed · +5 lines · +98 tokens per session b7f94a3c25f0
  2. 28d ago Changed · +9 lines · +448 tokens per session c254e35637b7
  3. 29d ago Changed · +69 tokens per session f405df586bd1
  4. 1mo ago Changed · +64 tokens per session 290a0519efa6
  5. 1mo ago Changed · +1 lines · +75 tokens per session b544d788dbb3
  6. 1mo ago Changed · +19 lines · +306 tokens per session 2db5e0f7f1dc
  7. 2mo ago First seen · 193 lines · 2,719 tokens per session scan A b3cba3145b4f

Subscribe to this mod's changes

authgear-server AGENTS.md is an instructions file published in the GitHub repository authgear/authgear-server (2,133 stars, last pushed yesterday), licensed Apache-2.0. It adds 3,779 tokens to every session, about $0.0151 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 2026-08-30.

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