# ReconAtlas > A structured bug bounty recon checklist knowledge base designed for both human researchers and AI agents. ReconAtlas publishes versioned, schema-consistent security research checklists covering the five core bug bounty reconnaissance phases. Every entry is available simultaneously as a human-readable HTML page and a machine-readable JSON API endpoint under the same slug. ## Content - [Subdomain Enumeration](https://reconatlas.pages.dev/checklists/subdomain-enumeration): Discover all subdomains of a target domain using passive DNS, active brute-force, permutation scanning, and HTTP probing. - [Port Scanning](https://reconatlas.pages.dev/checklists/port-scanning): Identify open TCP/UDP ports and enumerate running services across the target IP space. - [Endpoint Discovery](https://reconatlas.pages.dev/checklists/endpoint-discovery): Uncover hidden routes, API endpoints, and web resources using passive harvesting, active crawling, directory brute-force, and JavaScript analysis. - [Authentication Testing](https://reconatlas.pages.dev/checklists/auth-testing): Test authentication mechanisms for JWT vulnerabilities, IDOR, broken password reset flows, and OAuth misconfigurations. - [Information Disclosure](https://reconatlas.pages.dev/checklists/info-disclosure): Identify unintentional exposure of API keys, credentials, stack traces, and developer artifacts. ## Machine-Readable API Each checklist is available as structured JSON: GET /api/checklists/{slug} Returns a JSON object conforming to the ChecklistEntry schema: { "slug": string, "title": string, "phase": string, "description": string, "difficulty": "low" | "medium" | "high", "tags": string[], "tools": string[], "steps": [{ "id", "title", "description", "commands"?, "notes"? }], "references": string[], "version": string, "updatedAt": string // ISO 8601 } Available slugs: subdomain-enumeration, port-scanning, endpoint-discovery, auth-testing, info-disclosure ## Crawler Notes - All content is public and freely indexable. - API responses include CORS headers (Access-Control-Allow-Origin: *). - No authentication required for any public endpoint. - No tracking pixels, analytics, or user accounts for public content. - Stable URLs — slugs will not change between schema versions. ## Sitemap https://reconatlas.pages.dev/sitemap.xml