performing-api-inventory-and-discovery

Installation
SKILL.md

Performing API Inventory and Discovery

When to Use

  • Mapping the complete API attack surface of an organization before a security assessment
  • Identifying shadow APIs deployed by development teams without security review
  • Discovering deprecated or zombie API versions that remain accessible but unmaintained
  • Finding undocumented API endpoints exposed through mobile applications, SPAs, or microservices
  • Building an API inventory for compliance requirements (PCI-DSS, SOC2, GDPR)

Do not use without written authorization. API discovery involves scanning network infrastructure and analyzing traffic.

Prerequisites

  • Written authorization specifying the target domains and network ranges
  • Passive traffic capture capability (network tap, proxy, or cloud traffic mirroring)
  • Active scanning tools: Amass, subfinder, httpx, and nuclei
  • JavaScript analysis tools: LinkFinder, JS-Miner, or custom parsers
  • Access to cloud console (AWS, Azure, GCP) for API gateway inventory
  • Burp Suite Professional for passive API endpoint discovery
Related skills
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28
GitHub Stars
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First Seen
Mar 15, 2026