API Security Hardener

Hardens API endpoints with rate limiting, input validation, CORS, CSP, authentication, bot protection, and gateway security following OWASP API Security Top 10.

Gold

v1.0.00 activationsSecurityEngineeringadvanced

SupaScore

84.75

Research Quality (15%)

8.5

Prompt Engineering (25%)

8.5

Practical Utility (15%)

Completeness (10%)

8.5

User Satisfaction (20%)

Decision Usefulness (15%)

8.5

Best for

▸Implementing OWASP API Security Top 10 controls for production REST APIs
▸Designing rate limiting strategies with adaptive throttling and per-client quotas
▸Configuring CORS policies for cross-origin API access with credential handling
▸Setting up API gateway security layers with WAF rules and bot protection
▸Auditing GraphQL APIs for authorization bypasses and query complexity attacks

What you'll get

●Step-by-step rate limiting configuration with Redis backend, including sliding window algorithms and per-endpoint quotas
●CORS policy implementation with proper preflight handling and dynamic origin validation for multi-tenant APIs
●Complete API security audit checklist with OWASP API Security Top 10 remediation code examples

Not designed for ↓

×General web application security beyond API endpoints
×Network-level security like firewalls and VPN configuration
×Mobile app security or client-side vulnerability assessment
×Compliance frameworks beyond API-specific security requirements

Expects

API endpoint specifications, authentication flows, or existing API security configurations that need hardening assessment.

Returns

Detailed security implementation plans with code examples, configuration snippets, and OWASP-aligned remediation steps.

Evidence Policy

Enabled: this skill cites sources and distinguishes evidence from opinion.

api-securityrate-limitinginput-validationcorscspowaspbot-protectionwafapi-gatewayrest-securitygraphql-securitysecurity-headers

Research Foundation: 6 sources (2 industry frameworks, 4 official docs)

This skill was developed through independent research and synthesis. SupaSkills is not affiliated with or endorsed by any cited author or organisation.

Version History

v1.0.02/14/2026

Initial version

Prerequisites

Use these skills first for best results.

API Design ArchitectGold

Works well with

API Design ArchitectGold API Gateway Pattern ArchitectGold Authentication & Authorization ArchitectGold OAuth Hardening SpecialistGold Web Application Firewall ArchitectGold

Need more depth?

Specialist skills that go deeper in areas this skill touches.

Penetration Testing GuideGold Threat Modeling AdvisorGold Zero Trust Access PatternsGold

Common Workflows

API Security Implementation Pipeline

Complete API security lifecycle from design review through hardening implementation to security validation testing

API Design Architect→api-security-hardener→Penetration Testing Guide

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