HTTP API design : This guide describes a set of HTTP+JSON API design practices, originally extracted from work on the Heroku Platform API.
DevDocs : DevDocs combines multiple API documentations in a fast, organized, and searchable interface.
JSON API : A specification for building APIs in JSON. Clients built around JSON API are able to take advantage of its features around efficiently caching respons...
JSON Schema : JSON Schema is a vocabulary that allows you to annotate and validate JSON documents.
WebPlatform.org : Web Platform Docs is a community-driven site that aims to become a comprehensive and authoritative source for web developer documentation.