/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.
$ npx -y skills add yaklang/hack-skills --skill api-sec --agent claude-codeHow it fires
How this skill gets triggered: by you, by Claude, or both.
- Fires itselfAuto-invocation. Claude auto-loads it when your prompt matches the work.Auto-invocation is when the right skill fires by itself at the right moment, driven by a FLOW.md router and a hook, instead of you invoking it by name. It is the difference between a skill being installed and a skill actually getting used.Read the full definition →
- You can call itInvoke it directly when you want it.
- Slash command
/api-sec
Context preview
The summary Claude sees to decide when to auto-load this skill.
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.
SKILL.md
api-sec.SKILL.mdname: api-sec
description: >-
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.
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](../api-recon-and-docs/SKILL.md): OpenAPI, Swagger, version drift, hidden documentation
- [API Authorization and BOLA](../api-authorization-and-bola/SKILL.md): BOLA, BFLA, method abuse, hidden writable fields
- [API Auth and JWT Abuse](../api-auth-and-jwt-abuse/SKILL.md): bearer token, header trust, claim abuse, rate-limit bypass
- [GraphQL and Hidden Parameters](../graphql-and-hidden-parameters/SKILL.md): introspection, batching, undocumented fields, hidden parameters
Quick Triage
| Observation | Route | |---|---| | Swagger or OpenAPI is present | [api-recon-and-docs](../api-recon-and-docs/SKILL.md) | | IDs appear in URL, JSON, headers, or GraphQL args | [api-authorization-and-bola](../api-authorization-and-bola/SKILL.md) | | JWT token visible in traffic | [api-auth-and-jwt-abuse](../api-auth-and-jwt-abuse/SKILL.md) | | `/graphql` or batched JSON arrays are present | [graphql-and-hidden-parameters](../graphql-and-hidden-parameters/SKILL.md) | | Registration, login, or profile updates accept extra fields | [api-authorization-and-bola](../api-authorization-and-bola/SKILL.md) then [api-auth-and-jwt-abuse](../api-auth-and-jwt-abuse/SKILL.md) |
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](../auth-sec/SKILL.md)
- [business-logic-vuln](../business-logic-vuln/SKILL.md)
- [recon-for-sec](../recon-for-sec/SKILL.md)
Read more
name: api-sec description: >- 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.
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](../api-recon-and-docs/SKILL.md): OpenAPI, Swagger, version drift, hidden documentation
- [API Authorization and BOLA](../api-authorization-and-bola/SKILL.md): BOLA, BFLA, method abuse, hidden writable fields
- [API Auth and JWT Abuse](../api-auth-and-jwt-abuse/SKILL.md): bearer token, header trust, claim abuse, rate-limit bypass
- [GraphQL and Hidden Parameters](../graphql-and-hidden-parameters/SKILL.md): introspection, batching, undocumented fields, hidden parameters
Quick Triage
| Observation | Route | |---|---| | Swagger or OpenAPI is present | [api-recon-and-docs](../api-recon-and-docs/SKILL.md) | | IDs appear in URL, JSON, headers, or GraphQL args | [api-authorization-and-bola](../api-authorization-and-bola/SKILL.md) | | JWT token visible in traffic | [api-auth-and-jwt-abuse](../api-auth-and-jwt-abuse/SKILL.md) | | `/graphql` or batched JSON arrays are present | [graphql-and-hidden-parameters](../graphql-and-hidden-parameters/SKILL.md) | | Registration, login, or profile updates accept extra fields | [api-authorization-and-bola](../api-authorization-and-bola/SKILL.md) then [api-auth-and-jwt-abuse](../api-auth-and-jwt-abuse/SKILL.md) |
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](../auth-sec/SKILL.md)
- [business-logic-vuln](../business-logic-vuln/SKILL.md)
- [recon-for-sec](../recon-for-sec/SKILL.md)
Master Entry → Category Entries → Deep Topic Skills One master entry, six category entries, and 101 deep topic skills across 14 security domains.
Repo: yaklang/hack-skills
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