Extensions Registry

Master Issue

Contributing

Please raise a Pull-Request and follow the instructions in CONTRIBUTING.md, or open an Issue to contribute or discuss a registry value.

Values

Value Description Issue
x-agent-trust Trust-level metadata block for agent-authenticated security schemes. Required by apiKey security schemes that use Agent-Signature as the header. Carries algorithm, trust level vocabulary, and JWKS endpoint for local verification.  
x-oai-additionalOperations Represents non-standard HTTP method operations on a Path Item when targeting OpenAPI versions prior to 3.2.  
x-oai-deprecated Indicates that a Security Scheme is deprecated, used when targeting OpenAPI versions prior to 3.2.  
x-oai-deviceAuthorizationUrl The device authorization URL for an OAuth2 flow (RFC 8628), used when targeting OpenAPI versions prior to 3.2.  
x-oai-itemEncoding Encoding properties for individual items in a multipart request part, used when targeting OpenAPI versions prior to 3.2.  
x-oai-itemSchema Schema for individual items in a multipart request part, used when targeting OpenAPI versions prior to 3.2.  
x-oai-name An identifier for a Server Object, used when targeting OpenAPI versions prior to 3.2.  
x-oai-prefixEncoding Encoding properties applied before the item encoding in a multipart request part, used when targeting OpenAPI versions prior to 3.2.  
x-twitter Used to hold a reference to the API provider’s Twitter account.