grpc-ecosystem/grpc-gateway

Health v2 · maintenance only

Adoption not part of the score

19991 stars · 2402 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

A protoc plugin that reads protobuf service definitions with google.api.http annotations and generates a reverse-proxy server translating RESTful JSON/HTTP requests into gRPC calls. It lets you expose the same API in both gRPC and REST styles, with OpenAPI/Swagger support.

Use cases

• expose a gRPC service as a RESTful JSON API
• generate a reverse proxy from protobuf definitions
• support clients that cannot use gRPC
• generate OpenAPI/Swagger docs from proto files
• serve both gRPC and REST endpoints from one codebase
• maintain backward-compatible HTTP APIs alongside gRPC

When to choose

• you already define services in protobuf and need HTTP/JSON access
• you want REST and gRPC from a single source of truth
• you need OpenAPI documentation generated from proto annotations
• you serve high-volume APIs in Go with proven tooling

When to avoid

• your services are not defined with protobuf/gRPC
• you want a hand-crafted REST API with full control over routing
• you need non-Go runtime support for the generated gateway
• you only need gRPC without any HTTP/JSON interface

Facets

library · maturity stable

rpc api-framework http-server middleware api-gateway apis backend developer-tools web-development go cross-platform grpc protobuf rest-api openapi swagger reverse-proxy protoc-plugin code-generation

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