auth

auth is a command for Claude Code from dotclaude/marketplace. It costs 7 tokens per session (112 once invoked), scanned A, original, MIT.

A command for designing and implementing authentication and authorization, which control who users are and what they may access.

In plain words
What is it for?
Use it to design or build login flows, OAuth integrations, JWT refresh strategies, and access-control systems.
Why use it?
It gives a request to a specialist workflow instead of leaving the security design entirely to a general coding task. It can also focus the work on a chosen method, such as OAuth or JWT.

Command for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: model in frontmatter; positional $N argument.

Part of the backend-security plugin — 4 commands, 5 agents shipped together

Good fit Use it to design or build login flows, OAuth integrations, JWT refresh strategies, and access-control systems.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/dotclaude/marketplace/auth
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/dotclaude/marketplace

Made for: Claude Code.

Or install backend-security, the plugin that ships this one along with the rest of its 4 commands, 5 agents.

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 auth

README.md
[![agentmods](https://agentmods.dev/badge/commands/dotclaude/marketplace/auth/github.svg)](https://agentmods.dev/commands/dotclaude/marketplace/auth)
Your own site
<a href="https://agentmods.dev/commands/dotclaude/marketplace/auth"><img src="https://agentmods.dev/badge/commands/dotclaude/marketplace/auth/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 auth

Your own site · 80×15
<a href="https://agentmods.dev/commands/dotclaude/marketplace/auth"><img src="https://agentmods.dev/badge/commands/dotclaude/marketplace/auth.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 7 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 112 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 $0.00007 $0.00112
Opus 5.5 $0.00003 $0.00045
Sonnet 5.5 $0.00001 $0.00022
Haiku 4.5 $0.00001 $0.00011

Measured 1mo ago against content hash f1c3d3d07e2e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

auth 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 1mo 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.

plugins/backend-security/commands/auth.md · 26 lines

What it actually says

Auth Command

Authentication and authorization system design and implementation

Arguments

$1 (Required): requirement

$2 (Optional): method

Examples

/auth "Implement OAuth2 flow" oauth2
/auth "Design JWT refresh strategy" jwt

Invoke the auth-specialist agent with: $ARGUMENTS

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. 1mo ago First seen · 26 lines · 7 tokens per session scan A f1c3d3d07e2e

Subscribe to this mod's changes

auth is a command published in the GitHub repository dotclaude/marketplace (43 stars, last pushed 6mo ago), licensed MIT. It adds 7 tokens to every session and 112 once invoked, about $0.0000 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.