auth-required

auth-required is a cursor rule for coding agents from apisec-inc/apisec-skills. It costs 251 tokens per session, scanned A, original, MIT.

A coding rule that requires authentication before an API route can read, change, or delete data. Authentication verifies who the requester is.

In plain words
What is it for?
It helps add or check authentication middleware and decorators in Express, FastAPI, Django, Spring, and Go Gin routes, returning a safe unauthorized response when protection is missing.
Why use it?
It prevents unauthenticated callers from reaching data-handling endpoints and flags routes that lack the required protection.

Cursor rule

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.

agentmods
npx agentmods add rules/apisec-inc/apisec-skills/auth-required
Clone the repo
git clone --depth 1 https://github.com/apisec-inc/apisec-skills

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-required

README.md
[![agentmods](https://agentmods.dev/badge/rules/apisec-inc/apisec-skills/auth-required.svg)](https://agentmods.dev/rules/apisec-inc/apisec-skills/auth-required)
Your own site
<a href="https://agentmods.dev/rules/apisec-inc/apisec-skills/auth-required"><img src="https://agentmods.dev/badge/rules/apisec-inc/apisec-skills/auth-required.svg" alt="Measured on agentmods" height="20"></a>
Per session 251 This file is loaded in full into every session.
When invoked 251 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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 $0.00251 $0.00251
Opus 5 $0.00125 $0.00125
Sonnet 5 $0.00050 $0.00050
Haiku 4.5 $0.00025 $0.00025

Measured 3d ago against content hash 99787a93a795, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

auth-required 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 3d 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.

rules/auth-required.mdc · 28 lines

What it actually says

API authentication rule

Every route handler that reads, modifies, or deletes data MUST include authentication middleware or a decorator before the handler executes.

Never generate a data-touching endpoint without auth. If auth middleware is not yet defined in the codebase, note that it needs to be added and generate a placeholder that fails safely (401) until implemented.

Patterns that indicate missing auth — flag these:

  • Express route with no middleware before the handler function
  • FastAPI endpoint with no Depends(get_current_user) or equivalent
  • Django view with no @login_required or IsAuthenticated permission class
  • Spring endpoint with no @PreAuthorize or SecurityConfig coverage
  • Go handler registered without auth middleware in the route group

When you detect missing auth, do not silently generate the insecure code. Output: ⚠️ Auth missing — add authentication before generating this endpoint. Suggested fix: [framework-appropriate auth middleware pattern]

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. 3d ago First seen · 28 lines · 251 tokens per session scan A 99787a93a795

Subscribe to this mod's changes

auth-required is a cursor rule published in the GitHub repository apisec-inc/apisec-skills (18 stars, last pushed 5mo ago), licensed MIT. It adds 251 tokens to every session, about $0.0013 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.