> For the complete documentation index, see [llms.txt](https://docs.humanity.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.humanity.org/understanding-humanity.md). # Understanding Humanity Introduction to Humanity's biometric identity verification system, architecture, and core concepts for developers. Welcome to the Humanity Developer Documentation. This resource provides comprehensive technical guidance for integrating Humanity into on-chain and off-chain systems, with a strong emphasis on privacy and decentralization. \ The documentation covers the protocol’s architecture, setup instructions for both testnet and mainnet, integration workflows, and a full API reference. Humanity enables secure, privacy-preserving Proof-of-Humanity verification using biometric data, ensuring that user identities can be authenticated without compromising personal information. Use this guide to build applications that incorporate human uniqueness and trust, while maintaining user privacy and data sovereignty by design. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation by asking a question. Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters: ``` GET https://docs.humanity.org/understanding-humanity.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.