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Golang sdk (#339)
* Add Go SDK core events package Implements comprehensive event handling for the Go SDK including: - Message, run, state, and thinking events - Custom event support - Tool event handling - Event decoding and ID generation utilities - Test coverage for core functionality 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <[email protected]> * test: Add comprehensive unit tests for Go SDK events package - Add tests for EventDecoder covering all event types (100% coverage) - Add tests for ID generation utilities (DefaultIDGenerator, TimestampIDGenerator) - Add tests for previously untested event methods (ToJSON, ID, auto ID generation) - Add tests for chunk events (TextMessageChunk, ToolCallChunk) - Add tests for ToolCallResult events - Improve overall test coverage from 43.9% to 84.8% - Verify thread safety with concurrent ID generation tests - Add edge case testing for invalid inputs All 166 test cases passing with no race conditions detected. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <[email protected]> * feat: Add Go SDK SSE client implementation - Implement SSE client with retry logic and event handling - Add comprehensive unit tests with 100% coverage - Support custom headers and error handling - Include exponential backoff for reconnection attempts 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <[email protected]> * feat: Add Go SDK encoding and error handling packages - Add comprehensive encoding package with JSON support - Implement content negotiation for Accept headers - Add buffer sizing utilities and encoder pool - Add error types and utilities package - Include unit tests for negotiation functionality 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <[email protected]> * test: Add comprehensive unit tests for Go SDK SSE client - Added extensive test coverage for SSE client streaming functionality - Coverage improved from 12.5% to 97.1% for the SSE client package - Tests cover authentication, error handling, context cancellation, multiline data, concurrent operations, and timeout scenarios - Added performance benchmarks for streaming operations - Overall SDK test coverage now at 82.6% 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <[email protected]> * feat: Add Go SDK SSE writer implementation with comprehensive tests Implement SSE (Server-Sent Events) writer for Go SDK with: - Thread-safe SSE frame creation and writing - Support for custom event types and IDs - Proper escaping of newlines in JSON data - Error event handling with request IDs - Content negotiation support - Automatic flushing for compatible writers - CustomEvent implementation for flexible event creation - Comprehensive unit tests with 100% coverage 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <[email protected]> * exmaple ag-ui command line client * add example golang server * docs: Add comprehensive Go SDK documentation - Add main Go SDK overview with installation and getting started guide - Add client package documentation for SSE client implementation - Add core package documentation for events and types - Add encoding package documentation for marshaling/unmarshaling - Add errors package documentation for error handling - Include code examples and API references for all packages 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <[email protected]> * feat: Add Go SDK tests to GitHub Actions workflow - Add Go test job following Python and TypeScript patterns - Set up Go 1.24.4 environment - Cache Go modules for faster builds - Run all tests in sdks/community/go with verbose output 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <[email protected]> * fix: event missing EventTypeToolCallResult * fix: Fix SSE client read timeout handling - Replace SetReadDeadline approach with async read + timeout pattern - Use goroutines for non-blocking reads with proper timeout enforcement - Ensure timeout errors are properly sent to the errors channel - Fixes failing TestStream/read_timeout_handling test 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <[email protected]> --------- Co-authored-by: Claude <[email protected]> Co-authored-by: hackerli <[email protected]> Co-authored-by: Max Korp <[email protected]>
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.github/workflows/test.yml

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working-directory: typescript-sdk
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run: pnpm run test
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go:
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name: Go SDK Tests
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runs-on: ubuntu-latest
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steps:
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- name: Checkout code
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uses: actions/checkout@v4
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- name: Set up Go
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uses: actions/setup-go@v5
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with:
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go-version: '1.24.4'
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- name: Setup Go module cache
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uses: actions/cache@v4
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with:
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path: |
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~/go/pkg/mod
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~/.cache/go-build
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key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
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restore-keys: |
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${{ runner.os }}-go-
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- name: Download dependencies
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working-directory: sdks/community/go
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run: go mod download
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- name: Run tests
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working-directory: sdks/community/go
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run: go test ./... -v
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kotlin:
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name: Kotlin SDK Tests
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runs-on: ubuntu-latest
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exit 1
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else
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echo "✅ All $total_tests tests passed!"
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fi
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fi

.gitignore

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**/.claude/settings.local.json
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.vscode/
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.idea/
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mastra.db*
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.DS_Store
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**/.DS_Store
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test-results/

docs/sdk/go/client/overview.mdx

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---
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title: "Overview"
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description: "Client package overview for Go SDK"
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---
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# Client Package
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The AG-UI Go SDK client package provides Server-Sent Events (SSE) connectivity for real-time event streaming from AG-UI agents. This package enables Go applications to connect to agent endpoints and receive streaming responses.
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## Package Import
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```go
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import "github.com/ag-ui-protocol/ag-ui/sdks/community/go/pkg/client/sse"
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```
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## SSE Client Introduction
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The SSE (Server-Sent Events) client provides a robust connection mechanism for streaming events from AG-UI agents. SSE is a standard protocol for server-to-client streaming over HTTP, making it ideal for real-time agent interactions where the agent needs to send continuous updates about its processing state, thoughts, and outputs.
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Key features:
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- Real-time event streaming from agents
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- Automatic connection management
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- Context-based cancellation support
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- Configurable timeouts and buffer sizes
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- Built-in authentication support
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## Configuration
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The client is highly configurable to adapt to different deployment scenarios:
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```go
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client := sse.NewClient(sse.Config{
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Endpoint: "https://api.example.com/agent",
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APIKey: "your-api-key",
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ConnectTimeout: 30 * time.Second,
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ReadTimeout: 5 * time.Minute,
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BufferSize: 100,
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})
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// Start streaming with context and payload
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frames, errors, err := client.Stream(sse.StreamOptions{
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Context: context.Background(),
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Payload: map[string]interface{}{
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"threadId": "thread_123",
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"messages": []interface{}{
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map[string]string{
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"role": "user",
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"content": "Hello, agent!",
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},
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},
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},
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})
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```
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## Quick Example
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Here's a complete example showing how to connect to an agent and process events:
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```go
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package main
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import (
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"context"
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"fmt"
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"log"
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"github.com/ag-ui-protocol/ag-ui/sdks/community/go/pkg/client/sse"
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"github.com/ag-ui-protocol/ag-ui/sdks/community/go/pkg/core/events"
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)
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func main() {
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// Create SSE client
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client := sse.NewClient(sse.Config{
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Endpoint: "https://api.example.com/agent",
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APIKey: "your-api-key",
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})
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// Start streaming
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ctx := context.Background()
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frames, errors, err := client.Stream(sse.StreamOptions{
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Context: ctx,
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Payload: map[string]interface{}{
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"threadId": "thread_123",
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"messages": []interface{}{
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map[string]string{
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"role": "user",
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"content": "What is the weather today?",
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},
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},
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},
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})
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if err != nil {
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log.Fatal("Failed to start stream:", err)
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}
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// Process events
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decoder := events.NewEventDecoder()
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for {
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select {
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case frame := <-frames:
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event, err := decoder.Decode(frame.Data)
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if err != nil {
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log.Printf("Decode error: %v", err)
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continue
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}
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// Handle different event types
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switch e := event.(type) {
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case *events.TextMessageContentEvent:
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fmt.Print(e.Delta)
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case *events.RunFinishedEvent:
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fmt.Println("\nAgent finished processing")
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return
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}
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case err := <-errors:
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log.Printf("Stream error: %v", err)
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return
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}
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}
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}
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```
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## Navigation
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<Card
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title="SSE Client Reference"
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icon="cube"
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href="/sdk/go/client/sse-client"
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color="#3B82F6"
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iconType="solid"
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>
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Detailed documentation for the Server-Sent Events client including configuration, streaming, and error handling
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</Card>

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