​
Untrace SDKs

Untrace provides native SDKs for all major programming languages, each designed to integrate seamlessly with your existing codebase and framework of choice.

​
Supported Languages

JavaScript/TypeScript

Node.js, React, Next.js, Express
Zero-latency instrumentation with decorators and auto-instrumentation

Python

FastAPI, Django, Flask
Async support with context managers and framework integration

Go

Gin, Echo, Fiber
High-performance tracing with context propagation

Rust

Axum, Actix, Tokio
Zero-cost abstractions with async/await support

C#/.NET

ASP.NET Core, Console apps
Built-in DI support and activity-based tracing

Elixir

Phoenix, LiveView, OTP
Actor model integration with supervision trees

​
Quick Comparison

LanguagePackage ManagerKey FeaturesBest For
JavaScript/TypeScriptnpm install @untrace/sdkDecorators, Auto-instrumentationWeb apps, APIs, Full-stack
Pythonpip install untrace-sdkAsync/await, Context managersML/AI apps, APIs, Data processing
Gogo get github.com/untrace-dev/untrace-sdk-goContext propagation, PerformanceMicroservices, APIs, CLI tools
Rustcargo add untrace-sdkZero-cost abstractions, Memory safetyHigh-performance systems, WebAssembly
C#/.NETdotnet add package Untrace.SdkDI integration, ActivitiesEnterprise apps, Windows services
Elixir{:untrace_sdk, "~> 0.1.2"}OTP integration, TelemetryReal-time apps, Distributed systems

​
Common Features

All SDKs provide:
  • Zero-latency instrumentation - Minimal performance overhead
  • OpenTelemetry compliance - Industry-standard observability
  • Automatic provider detection - Works with all major LLM providers
  • Token usage tracking - Automatic cost calculation
  • Error handling - Comprehensive error capture and reporting
  • Custom attributes - Add your own metadata and context
  • Sampling support - Control data volume and costs
  • Batch processing - Efficient data transmission

​
Getting Started

​
1. Choose Your Language

Select the SDK that matches your tech stack:
  • Web Development: JavaScript/TypeScript, Python, C#/.NET
  • Microservices: Go, Rust, Elixir
  • AI/ML: Python, JavaScript/TypeScript
  • High Performance: Rust, Go
  • Enterprise: C#/.NET, Java (coming soon)

​
2. Install the SDK

Each language has its own installation method: 
npm install @untrace/sdk

​
3. Initialize and Start Tracing

import { init } from '@untrace/sdk';

const untrace = init({
  apiKey: 'your-api-key',
  serviceName: 'my-app'
});

​
Framework Integration

​
Web Frameworks

FrameworkJavaScriptPythonGoRustC#Elixir
React/Next.js✅❌❌❌❌❌
Express✅❌❌❌❌❌
FastAPI❌✅❌❌❌❌
Django❌✅❌❌❌❌
Flask❌✅❌❌❌❌
Gin❌❌✅❌❌❌
Echo❌❌✅❌❌❌
Fiber❌❌✅❌❌❌
Axum❌❌❌✅❌❌
Actix❌❌❌✅❌❌
ASP.NET Core❌❌❌❌✅❌
Phoenix❌❌❌❌❌✅

​
AI/ML Frameworks

FrameworkJavaScriptPythonGoRustC#Elixir
LangChain✅✅❌❌❌❌
LlamaIndex✅✅❌❌❌❌
OpenAI✅✅✅✅✅✅
Anthropic✅✅✅✅✅✅
Hugging Face✅✅❌❌❌❌

​
Migration Between Languages

If you’re switching between languages or have a polyglot codebase, Untrace makes it easy to maintain consistent observability:

​
Consistent Data Model

All SDKs use the same trace data structure: 
{
  "event_type": "llm_call",
  "data": {
    "model": "gpt-4",
    "prompt": "Hello world",
    "response": "Hello! How can I help?",
    "tokens_used": 25
  },
  "metadata": {
    "user_id": "user123",
    "session_id": "session456"
  }
}

​
Cross-Language Correlation

Traces from different languages are automatically correlated using:
  • Trace IDs - Unique identifiers for each trace
  • Parent-Child relationships - Link related operations
  • Workflow IDs - Group related traces across services
  • User/Session context - Maintain user journey across languages

​
Best Practices

​
1. Choose the Right SDK

  • JavaScript/TypeScript: Web applications, full-stack development
  • Python: AI/ML applications, data processing, APIs
  • Go: Microservices, high-performance APIs, CLI tools
  • Rust: High-performance systems, WebAssembly, embedded
  • C#/.NET: Enterprise applications, Windows services
  • Elixir: Real-time applications, distributed systems

​
2. Consistent Naming

Use consistent naming conventions across all your services: 
// JavaScript
const trace = await untrace.trace("llm_call", {
  model: "gpt-4",
  prompt: message
});

# Python
trace = await client.trace("llm_call", {
    "model": "gpt-4",
    "prompt": message
})

​
3. Shared Context

Pass context between services using standard headers: 
// JavaScript - Set headers
const response = await fetch('/api/process', {
  headers: {
    'X-Trace-ID': traceId,
    'X-User-ID': userId
  }
});

// Go - Read headers
traceID := r.Header.Get("X-Trace-ID")
userID := r.Header.Get("X-User-ID")

​
Next Steps

Choose Your SDK

Start with the main SDK documentation

Language-Specific Guides

Deep dive into your chosen language

Framework Examples

See real-world implementations

Dashboard Setup

Configure your observability dashboard