langfuse-ergonomic 0.6.3

Ergonomic Rust client for Langfuse with builder patterns
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37

//! Basic example showing minimal trace creation

use langfuse_ergonomic::ClientBuilder;
use serde_json::json;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    // Load environment variables from .env file
    dotenvy::dotenv().ok();

    // Create client from environment variables
    let client = ClientBuilder::from_env()?.build()?;
    println!(" Connected to Langfuse");

    // Create a minimal trace
    let trace = client.trace().name("minimal-trace").call().await?;

    println!("Created minimal trace: {}", trace.id);

    // Create a trace with input/output
    let trace_with_io = client
        .trace()
        .name("trace-with-io")
        .input(json!({
            "question": "What is 2 + 2?"
        }))
        .output(json!({
            "answer": 4,
            "confidence": 1.0
        }))
        .call()
        .await?;

    println!("Created trace with I/O: {}", trace_with_io.id);

    Ok(())
}