api-security

api-security is a skill for Claude Code, Codex from roodlicht/accans-sec-skills. It costs 66 tokens per session (3,026 once invoked), scanned B, original, no licence file.

A security review for web APIs based on the OWASP API Top 10 2023. It covers common API risks such as weak login checks, broken access rules, unsafe input, and server-side request forgery.

In plain words
What is it for?
Reviewing OAuth2, JWT, and API-key authentication; object-level authorization such as BOLA or IDOR; validation, rate limits, CORS, SSRF, and GraphQL concerns.
Why use it?
It helps find security weaknesses in API design and implementation before attackers can exploit them.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Reviewing OAuth2, JWT, and API-key authentication; object-level authorization such as BOLA or IDOR; validation, rate limits, CORS, SSRF, and GraphQL concerns.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/roodlicht/accans-sec-skills/api-security
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.

Any agent
npx skills add roodlicht/accans-sec-skills --skill api-security
Clone the repo
git clone --depth 1 https://github.com/roodlicht/accans-sec-skills

Made for: Claude Code, 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 api-security

README.md
[![agentmods](https://agentmods.dev/badge/skills/roodlicht/accans-sec-skills/api-security.svg)](https://agentmods.dev/skills/roodlicht/accans-sec-skills/api-security)
Your own site
<a href="https://agentmods.dev/skills/roodlicht/accans-sec-skills/api-security"><img src="https://agentmods.dev/badge/skills/roodlicht/accans-sec-skills/api-security.svg" alt="Measured on agentmods" height="20"></a>
Per session 66 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,026 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 $0.00066 $0.03026
Opus 5 $0.00033 $0.01513
Sonnet 5 $0.00013 $0.00605
Haiku 4.5 $0.00007 $0.00303

Measured 8d ago against content hash c0a48ca5088f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade B, and why

api-security scanned grade B with 2 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 8d 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.

Cloud metadata endpointmediumServer-side request forgery

One request to 169.254.169.254 can return temporary IAM credentials.

- **API7 Server Side Request Forgery.** Endpoints that make an outbound HTTP call based on user input (webhook dispatch, URL preview, image proxy, PDF rendering, OAuth redirect). Fix: allowlist of permitted hosts. Block

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

Findings themselves as in `security-review`: location, CWE/API category, severity, reproduction, fix direction. Reproduction preferably as a curl example against a test endpoint, not against production.
skills/api-security/SKILL.md · 149 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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. 8d ago First seen · 149 lines · 66 tokens per session scan B c0a48ca5088f

Subscribe to this mod's changes

api-security is a skill published in the GitHub repository roodlicht/accans-sec-skills (4 stars, last pushed 3mo ago), with no licence file. It adds 66 tokens to every session and 3,026 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it B with 2 findings (cloud metadata endpoint, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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