Hydra is a documentation framework that bases on top of established Linked Data (Semantic Web) tools to build the next generation of connected Web APIs. The team of developers in the HTTP-APIs community aims to establish an ecosystem of tools to make Hydra framework operational. A list of tools under development can be found at this link.

Hydra is currently a draft created by World Wide Web Consortium’s Hydra Community Group. Official documentation available here and development is open here.

Hydra Ecosystem promotes and facilitates the adoption of Hydra.

For a general introduction you may want to follow the index:

This development community is part of Google Summer of Code and Season of Docs.