# Summary

* [Introduction](README.md)
* [Core Principles](core-principles/README.md)
  * [API First](core-principles/api-first.md)
  * [OpenAPI Specification](core-principles/openapi-specification.md)
  * [API Design Platform](core-principles/apiary.md)
  * [Version Control System](core-principles/version-control-system.md)
  * [Contract](core-principles/contract.md)
  * [Testing](core-principles/testing.md)
  * [Design Maturity](core-principles/design-maturity.md)
  * [Robustness](core-principles/robustness.md)
  * [Minimal API Surface](core-principles/minimal-api-surface.md)
  * [Rules for Extending](core-principles/rules-for-extending.md)
* [Protocol](protocol/README.md)
  * [HTTP](protocol/http.md)
  * [TLS](protocol/tls.md)
  * [Separate Concerns](protocol/separate-concerns.md)
  * [Request Methods](protocol/use-appropriate-methods.md)
  * [Status Codes](protocol/use-appropriate-status-codes.md)
* [Message](message/README.md)
  * [Message Formats](message/message-formats.md)
  * [Content Negotiation](message/content-negotiation.md)
  * [HAL](message/hal.md)
  * [Problem Detail](message/error-reporting.md)
  * [Foreign Key Relations](message/foreign-key-relations.md)
* [Application](application/README.md)
  * [Common Data Types](application/common-data-types.md)
* [Evolution](evolution/README.md)
  * [Naming Conventions](evolution/naming-conventions.md)
  * [Reserved Identifiers](evolution/reserved-identifiers.md)
  * [JSON](evolution/json.md)
  * [Changes and Versioning](evolution/versioning.md)
  * [URI Structure](evolution/uri-structure.md)
  * [Testing Enviroments](execution/testing-enviroments.md)
* [Execution](execution/README.md)
  * [Pagination](execution/pagination.md)
  * [Asynchronous Tasks](execution/asynchronous-tasks.md)
  * [Batch Operations](execution/batch-operations.md)
  * [Choosing Fields and Embedded Resources](execution/choosing-fields-and-embedded-resoruces.md)
  * [Query Requests with Large Inputs](execution/query-requests-with-large-inputs.md)
  * [Localization](execution/localization.md)
  * [Authentication](execution/authentication.md)
  * [Security](execution/security.md)
  * [Rate Limiting](execution/rate-limiting.md)
  * [Caching](execution/caching.md)
  * [Client Application Access Control](execution/api-keys.md)
* [API Clients](clients/README.md)
  * [Loose Coupling](clients/loose-coupling.md)
* [Miscellaneous](miscellaneous.md)
* [Guides](guides/README.md)
  * [API Testing CI Environment](guides/api-testing-ci-environment.md)
  * [Complete API Development](guides/complete-api-development.md)
* [Acknowledgements](acknowledgements.md)