Api Security Best Practices

Api Security Best Practices is a skill for Claude Code, Codex from mayurrathi/awesome-agent-skills. It costs 27 tokens per session (5,882 once invoked), scanned A, original, no licence file.

A set of guidance for designing secure application programming interfaces, or APIs. An API is a way for software systems to communicate.

In plain words
What is it for?
It covers authentication, permissions, input checks, rate limits, and protection against common vulnerabilities.
Why use it?
It helps prevent unauthorized access, invalid input, excessive requests, and common API attacks.

Skill for Claude CodeCodex

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

Good fit It covers authentication, permissions, input checks, rate limits, and protection against common vulnerabilities.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/mayurrathi/awesome-agent-skills/api-security-best-practices
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 mayurrathi/awesome-agent-skills --skill api-security-best-practices
Clone the repo
git clone --depth 1 https://github.com/mayurrathi/awesome-agent-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 Best Practices

README.md
[![agentmods](https://agentmods.dev/badge/skills/mayurrathi/awesome-agent-skills/api-security-best-practices/github.svg)](https://agentmods.dev/skills/mayurrathi/awesome-agent-skills/api-security-best-practices)
Your own site
<a href="https://agentmods.dev/skills/mayurrathi/awesome-agent-skills/api-security-best-practices"><img src="https://agentmods.dev/badge/skills/mayurrathi/awesome-agent-skills/api-security-best-practices/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 Api Security Best Practices

Your own site · 80×15
<a href="https://agentmods.dev/skills/mayurrathi/awesome-agent-skills/api-security-best-practices"><img src="https://agentmods.dev/badge/skills/mayurrathi/awesome-agent-skills/api-security-best-practices.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 27 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,882 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 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 $0.00027 $0.05882
Opus 5.5 $0.00011 $0.02353
Sonnet 5.5 $0.00005 $0.01176
Haiku 4.5 $0.00003 $0.00588

Measured 2mo ago against content hash 21fe1cb91aea, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

Api Security Best Practices 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 2mo 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.

skills/api-security-best-practices/SKILL.md · 910 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

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. 2mo ago First seen · 910 lines · 27 tokens per session scan A 21fe1cb91aea

Subscribe to this mod's changes

Api Security Best Practices is a skill published in the GitHub repository mayurrathi/awesome-agent-skills (8 stars, last pushed 8mo ago), with no licence file. It adds 27 tokens to every session and 5,882 once invoked, about $0.0001 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 2026-08-31.

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