Rust SDK

1use reqwest::Client;
2use serde_json::{json, Value};
3
4const API: &str = "https://buff.finance";
5const API_KEY: &str = "YOUR_API_KEY";
6
7#[tokio::main]
8async fn main() -> Result<(), Box<dyn std::error::Error>> {
9    let client = Client::new();
10
11    // Calculate round-up
12    let url = format!("{}/api/roundup", API);
13    let res: Value = client.post(&url)
14        .header("x-api-key", API_KEY)
15        .json(&json!({"txValueUsd": 27.63, "plan": "sprout"}))
16        .send().await?.json().await?;
17    println!("Round-up: {}", res["data"]["roundUpUsd"]); // 0.07
18
19    // Get wrap instructions (server builds transfers with fees)
20    let url = format!("{}/api/wrap", API);
21    let res: Value = client.post(&url)
22        .header("x-api-key", API_KEY)
23        .json(&json!({
24            "txValueUsd": 27.63,
25            "userPubkey": "YOUR_PUBKEY",
26            "buffWalletPubkey": "BUFF_WALLET",
27            "plan": "sprout"
28        }))
29        .send().await?.json().await?;
30    let ix = res["data"]["instructions"].as_array().unwrap();
31    println!("Instructions: {}", ix.len());
32
33    // Build swap when threshold reached
34    let url = format!("{}/api/swap/build", API);
35    let res: Value = client.post(&url)
36        .header("x-api-key", API_KEY)
37        .json(&json!({
38            "buffWalletPubkey": "BUFF_WALLET",
39            "targetAsset": "BTC",
40            "threshold": 5
41        }))
42        .send().await?.json().await?;
43    println!("Ready: {}", res["data"]["ready"]);
44
45    Ok(())
46}