Agent skill · security · yaklang
api-sec
Entry P1 category router for API security. Use when choosing between API recon, authorization, token abuse, and hidden-parameter workflows before any deeper API topic skill.
Why this skill is useful
Provides a structured approach to categorize and route API security testing, which the AI wouldn't reliably generate on its own.
What it needs
About 1k tokens when loaded. Last updated 2026-06-16. 1,563 stars on the source repository.
What this skill does
API Security Router This is the routing entry point for API security testing. Use this skill first to decide whether the API issue is mostly recon/docs, object authorization, token trust, or GraphQL/hidden parameters, then route to a deeper topic skill. When to Use The target exposes REST APIs, mobile backends, or GraphQL endpoints You need to define API testing order before going into specific topics You want to handle object authorization, JWT, GraphQL, and hidden fields as separate tracks Skill Map API Recon and Docs: OpenAPI, Swagger, version drift, hidden documentation API Authorization and BOLA: BOLA, BFLA, method abuse, hidden writable fields API Auth and JWT Abuse: bearer token, header trust, claim abuse, rate-limit bypass GraphQL and Hidden Parameters: introspection, batching, undocumented fields, hidden parameters Quick Triage Observation Route --- --- Swagger or OpenAPI is present api-recon-and-docs IDs appear in URL, JSON, headers, or GraphQL args api-authorization-and-bola JWT token visible in traffic api-auth-and-jwt-abuse /graphql or batched JSON arrays are present graphql-and-hidden-parameters Registration, login, or profile updates accept extra fields api-authorization-and-bola then api-auth-and-jwt-abuse Recommended Flow 1. Start with exposed endpoints and documentation assets 2. Then evaluate object-level and function-level authorization 3. Then evaluate token, header, signature, and rate-limit boundaries 4. If GraphQL or complex JSON is present, continue with hidden fields and schema abuse Related Categories auth-sec business-logic-vuln recon-for-sec
How to use it
Reference it in AdaL, Claude Code, Cursor or any coding agent — nothing to install:
@skills yaklang/api-sec