Connect-RPC

aid: connect-rpc
name: Connect-RPC
description: >-
  Connect is a slim framework for building browser-friendly and gRPC-compatible
  HTTP APIs from Protocol Buffer schemas. Servers built with Connect speak the
  Connect protocol, gRPC, and gRPC-Web simultaneously, while clients can
  switch between protocols without changing code. Connect provides
  type-safe SDKs for Go, TypeScript/JavaScript, Swift, Kotlin, and Python,
  plus the Buf-generated `protoc-gen-connect-*` code generators. The project
  is open source under the Apache 2.0 license and is maintained by Buf.
type: Index
position: Provider
access: Open Source
image: https://kinlane-productions2.s3.amazonaws.com/apis-json/apis-json-logo.jpg
url: >-
  https://raw.githubusercontent.com/api-evangelist/connect-rpc/refs/heads/main/apis.yml
created: '2026-03-25'
modified: '2026-04-28'
specificationVersion: '0.19'
x-type: opensource
tags:
  - Apache 2.0
  - Buf
  - Code Generation
  - Connect Protocol
  - gRPC
  - gRPC-Web
  - HTTP
  - Open Source
  - Protocol Buffers
  - RPC
  - SDKs
apis:
  - aid: connect-rpc:connect-go
    name: connect-go
    description: >-
      The Go implementation of Connect. Provides server handlers and clients
      that speak the Connect, gRPC, and gRPC-Web protocols simultaneously.
      Generated from .proto files via the protoc-gen-connect-go plugin and
      designed to slot into idiomatic net/http servers.
    humanURL: https://connectrpc.com/docs/go/
    image: https://kinlane-productions2.s3.amazonaws.com/apis-json/apis-json-logo.jpg
    tags:
      - Go
      - SDK
    properties:
      - type: Documentation
        url: https://connectrpc.com/docs/go/
      - type: Getting Started
        url: https://connectrpc.com/docs/go/getting-started
      - type: GitHub
        url: https://github.com/connectrpc/connect-go
      - type: Tutorial
        url: https://connectrpc.com/docs/go/tutorial
    x-features:
      - Connect Protocol Server and Client
      - gRPC Compatibility
      - gRPC-Web Compatibility
      - Streaming RPCs
      - Interceptors
      - Idiomatic net/http Integration
    x-use-cases:
      - Build a Go service callable from browsers and gRPC clients
      - Migrate gRPC services to Connect without breaking clients
      - Add HTTP/JSON access to existing Protobuf services
  - aid: connect-rpc:connect-es
    name: connect-es (Connect for ECMAScript)
    description: >-
      Connect for ECMAScript provides type-safe browser and Node.js clients
      and Node.js servers from Protobuf schemas. Targets the Connect protocol
      and gRPC-Web with idiomatic TypeScript types and tree-shakable output.
    humanURL: https://connectrpc.com/docs/web/
    image: https://kinlane-productions2.s3.amazonaws.com/apis-json/apis-json-logo.jpg
    tags:
      - JavaScript
      - SDK
      - TypeScript
    properties:
      - type: Documentation
        url: https://connectrpc.com/docs/web/
      - type: Getting Started
        url: https://connectrpc.com/docs/web/getting-started
      - type: GitHub
        url: https://github.com/connectrpc/connect-es
    x-features:
      - Browser Clients
      - Node.js Clients
      - Node.js Servers
      - Tree-Shakable Bundles
      - Type-Safe TypeScript
      - gRPC-Web Compatibility
    x-use-cases:
      - Call Protobuf services from React, Vue, or vanilla JS
      - Build Node.js servers without a gRPC dependency
      - Share TypeScript types between client and server
  - aid: connect-rpc:connect-swift
    name: connect-swift
    description: >-
      Connect for Swift provides type-safe Connect, gRPC, and gRPC-Web
      clients for iOS, macOS, watchOS, and tvOS apps, generated from
      Protobuf schemas via protoc-gen-connect-swift.
    humanURL: https://connectrpc.com/docs/swift/
    image: https://kinlane-productions2.s3.amazonaws.com/apis-json/apis-json-logo.jpg
    tags:
      - iOS
      - SDK
      - Swift
    properties:
      - type: Documentation
        url: https://connectrpc.com/docs/swift/
      - type: Getting Started
        url: https://connectrpc.com/docs/swift/getting-started
      - type: GitHub
        url: https://github.com/connectrpc/connect-swift
    x-features:
      - URLSession Integration
      - Streaming Support
      - gRPC and gRPC-Web Clients
      - Async/Await API
    x-use-cases:
      - Call Protobuf services from iOS apps
      - Add streaming RPC to Apple platform clients
  - aid: connect-rpc:connect-kotlin
    name: connect-kotlin
    description: >-
      Connect for Kotlin provides type-safe clients for Android and JVM
      applications. Speaks the Connect protocol, gRPC, and gRPC-Web from a
      single SDK generated by protoc-gen-connect-kotlin.
    humanURL: https://connectrpc.com/docs/kotlin/
    image: https://kinlane-productions2.s3.amazonaws.com/apis-json/apis-json-logo.jpg
    tags:
      - Android
      - JVM
      - Kotlin
      - SDK
    properties:
      - type: Documentation
        url: https://connectrpc.com/docs/kotlin/
      - type: Getting Started
        url: https://connectrpc.com/docs/kotlin/getting-started
      - type: GitHub
        url: https://github.com/connectrpc/connect-kotlin
    x-features:
      - Coroutines API
      - OkHttp Transport
      - Streaming Support
      - Multi-Protocol Client
    x-use-cases:
      - Call Protobuf services from Android apps
      - Share Kotlin types across mobile and backend
  - aid: connect-rpc:connect-python
    name: connect-python
    description: >-
      Connect for Python (beta) provides Connect protocol and gRPC clients
      generated from Protobuf schemas. Targets ASGI servers and async Python
      with type-safe stubs.
    humanURL: https://connectrpc.com/docs/python/
    image: https://kinlane-productions2.s3.amazonaws.com/apis-json/apis-json-logo.jpg
    tags:
      - Python
      - SDK
    properties:
      - type: Documentation
        url: https://connectrpc.com/docs/python/
      - type: GitHub
        url: https://github.com/connectrpc/connect-python
    x-features:
      - ASGI Integration
      - Type-Safe Stubs
      - Connect and gRPC Clients
    x-use-cases:
      - Add Protobuf RPC to Python services
      - Call Connect services from data-science notebooks
common:
  - type: Website
    url: https://connectrpc.com
  - type: Documentation
    url: https://connectrpc.com/docs/introduction
  - type: GitHub Organization
    url: https://github.com/connectrpc
  - type: Demo
    url: https://connectrpc.com/demo
  - type: Blog
    url: https://buf.build/blog
  - type: Maintainer
    url: https://buf.build
  - type: License
    url: https://github.com/connectrpc/connect-go/blob/main/LICENSE
  - type: Slack
    url: https://buf.build/links/slack
maintainers:
  - FN: Kin Lane
    email: [email protected]