This repository is a curated 'awesome list' of public security-related APIs, not a software application or data pipeline. The primary artifact is README.md, a hand-maintained table of roughly 100 APIs categorized into Online services, Tools, SIEM platforms, and Various. Each entry records the API name, description, authentication type, HTTPS support, documentation link, and licensing model. The only executable logic is a GitHub Actions workflow that runs awesome_bot weekly to detect broken links in the README. A supplementary document, apidocs/haveIBeenPwned.md, documents unofficial Have I Been Pwned domain-search endpoints discovered in 2018. Despite being classified as an application for tooling purposes, there is no application code, library, or service in this repository. It functions as a knowledge base for security engineers and threat intelligence practitioners. The CI workflow is the only automated component and is a standard awesome-list link checker. The value is in the curation and categorization of APIs, not in reusable software components. The list is actively maintained, but some entries are aging and may reflect outdated API details or vendor changes.