FOFA is a cyberspace mapping and security search engine for asset discovery, exposure search, and security situation awareness. The official site provides syntax, rule lists, API documentation/API tools, icon search, batch search, a vulnerability collection platform, and related support and tools.

The available materials do not show a self-hosted version, so deployment requirements and server resource needs cannot be confirmed. Actual use appears to be based mainly on the official website account, membership, and API. Users in China should note the listed ICP and telecom license information, and independently verify compatibility with WeChat ecosystem services and domestic cloud, SMS, and payment providers.