Feign (feign)

Feign (OpenFeign) is a declarative Java HTTP client binder inspired by Retrofit, JAX-RS, and WebSocket. It turns annotated Java interfaces into templated HTTP requests with pluggable encoders, decoders, error handlers, and HTTP transports. The OpenFeign organization maintains a broad set of modules covering serialization, HTTP transports, JAX-RS contracts, resilience, logging, form encoding, GraphQL, and metrics.

URL: Visit APIs.json URL

Scope

• Type: Index
• Position: Consumer
• Access: 3rd-Party

Tags

• HTTP Client, Java, JVM, Open Source, REST, SDKs

Timestamps

• Created: 2026-03-27
• Modified: 2026-04-28

Modules

Feign Core

Base library that processes annotated Java interfaces into templated HTTP requests.

• Source / Docs

Serialization

• Feign Jackson — docs
• Feign Gson — docs

HTTP Transports

• Feign OkHttp — docs
• Feign Apache HttpClient (HC5) — docs
• Feign Java 11 HTTP — docs

Resilience and Load Balancing

• Feign Ribbon — docs
• Feign Hystrix — docs

Contracts

• Feign JAX-RS — docs

Logging and Metrics

• Feign SLF4J — docs
• Feign Micrometer — docs

Forms

• Feign Form — docs

Common Properties

• Website / Source
• Documentation
• GitHub Organization
• Issues
• Releases
• License
• Maven Central

Maintainers

• FN: Kin Lane
• Email: kin@apievangelist.com