go-authcrunch: Skill for Codex

.codex/skills/authdbctl/SKILL.md

authdbctl is a skill for Codex from greenpau/go-authcrunch. It costs 40 tokens per session (1,179 once invoked), scanned A, original, Apache-2.0.

A maintenance guide for the AuthDB management command-line tool, including its commands, settings, terminal prompts, retries, output, and end-to-end tests. It also explains how the tool uses a separate login package.

In plain words
What is it for?
Use it when changing the AuthDB CLI, its flags or configuration, interactive password input, login handling, retry logic, output, or executable end-to-end tests.
Why use it?
It helps keep command behavior, saved credentials, environment settings, terminal handling, and tests consistent when the tool changes.

Skill for Codex

Written for Codex: agents/openai.yaml present.

This is greenpau/go-authcrunch's own configuration. It tells Codex how to work on go-authcrunch 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 go-authcrunch configures →

Reuse

Borrowing it

Nothing to install: this file belongs to greenpau/go-authcrunch. 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/greenpau/go-authcrunch/main/.codex/skills/authdbctl/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/greenpau/go-authcrunch

Made for: Codex.

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 authdbctl

README.md
[![agentmods](https://agentmods.dev/badge/skills/greenpau/go-authcrunch/authdbctl/github.svg)](https://agentmods.dev/skills/greenpau/go-authcrunch/authdbctl)
Your own site
<a href="https://agentmods.dev/skills/greenpau/go-authcrunch/authdbctl"><img src="https://agentmods.dev/badge/skills/greenpau/go-authcrunch/authdbctl/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 authdbctl

Your own site · 80×15
<a href="https://agentmods.dev/skills/greenpau/go-authcrunch/authdbctl"><img src="https://agentmods.dev/badge/skills/greenpau/go-authcrunch/authdbctl.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 40 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,179 The whole file, excluding the scripts and references it only reads on demand.
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 $0.00040 $0.01179
Opus 5 $0.00020 $0.00589
Sonnet 5 $0.00008 $0.00236
Haiku 4.5 $0.00004 $0.00118

Measured yesterday against content hash 5b7aefef602e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-14, from the pricing page.

Security

Grade A, and why

authdbctl 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 yesterday.

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.

.codex/skills/authdbctl/SKILL.md · 101 lines

How it starts

The opening of the file, as written. The whole thing — 101 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AuthDB Management CLI

Ownership and Contracts

cmd/authdbctl owns application paths, configuration discovery, flags/env, terminal input, management commands, retry decisions, and output. Use authentication-client for the importable login protocol and token-file contracts. Keep CLI and admin API dependencies out of pkg/authclient. connect authenticates through /login even when the admin API is disabled.

Preserve AUTHDBCTL_* environment names and ~/.config/authdbctl defaults. Explicit flags override environment; YAML token_path overrides the path flag. Freshly acquired credentials replace the in-memory cache only after a successful file save. A failed login/save must preserve previously usable credentials.

Keep one buffered reader per wrapper for plain identity input; creating readers for consecutive prompts can discard piped lines. Hidden prompts use a real terminal, with terminal state owned by the caller and restored on completion, error, or context timeout. The raw-mode line editor handles Ctrl-C/Ctrl-D as EOF. A pending read must not change OS terminal settings after cancellation. Prompt cancellation ends the command; do not start another prompt while that read is pending. Do not move terminal IO into the reusable authentication package.

Management requests attach opaque credentials and reuse the cache. Access denial may cause a fresh login only when another attempt remains. System messages have token attachment disabled and must not trigger login. Validate management HTTP 200 bodies as JSON objects and reject status: failure; a failed mutation must return an error without retrying. Malformed responses, including null, must not produce a successful command exit. Preserve the original successful JSON body for output, including generated credentials the command is meant to return. Never put response bodies or configured secrets in error diagnostics.

Marshal realm/user fields as JSON rather than interpolating strings. A user update selects exactly one operation; reject absent or conflicting selections before configuration, login, or mutation. Hash generation may print the new hash and intentionally generated API key, but must not print supplied password fragments. Report encryption-key setup failures as errors.

Read the full file on GitHub · 101 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. yesterday First seen · 101 lines · 40 tokens per session scan A 5b7aefef602e

Subscribe to this mod's changes

authdbctl is a skill published in the GitHub repository greenpau/go-authcrunch (59 stars, last pushed yesterday), licensed Apache-2.0. It adds 40 tokens to every session and 1,179 once invoked, about $0.0002 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 2026-09-13.

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