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Install

cargo add orbitflare-sdk
The rpc feature is enabled by default.

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Building the client

Here’s a client with every option set: 
use orbitflare_sdk::{RpcClientBuilder, RetryPolicy, Result};
use std::time::Duration;

let client = RpcClientBuilder::new()
    .url("http://ny.rpc.orbitflare.com")
    .fallback_url("http://fra.rpc.orbitflare.com")
    .fallback_url("http://ams.rpc.orbitflare.com")
    .api_key("ORBIT-XXXXXX-NNNNNN-NNNNNN")
    .commitment("confirmed")
    .retry(RetryPolicy {
        initial_delay: Duration::from_millis(100),
        max_delay: Duration::from_secs(30),
        multiplier: 2.0,
        max_attempts: 5,
    })
    .timeout(Duration::from_secs(30))
    .build()?;
Most of these have sensible defaults. A minimal setup: 
let client = RpcClientBuilder::new()
    .url("http://ny.rpc.orbitflare.com")
    .build()?;

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Builder methods

.url(url) - The primary endpoint to send requests to. If not set, the SDK checks the ORBITFLARE_RPC_URL environment variable. 
.url("http://ny.rpc.orbitflare.com")
.urls(&[...]) - Set the primary and all fallbacks in one call. The first element is the primary, the rest are fallbacks. 
.urls(&["http://ny.rpc.orbitflare.com", "http://fra.rpc.orbitflare.com", "http://ams.rpc.orbitflare.com"])
.fallback_url(url) - Add a single fallback endpoint. Call multiple times to add several. When the primary fails, the SDK tries fallbacks in order. 
.fallback_url("http://fra.rpc.orbitflare.com")
.fallback_url("http://ams.rpc.orbitflare.com")
.fallback_urls(&[...]) - Same as fallback_url but takes a slice. 
.fallback_urls(&["http://fra.rpc.orbitflare.com", "http://ams.rpc.orbitflare.com"])
.api_key(key) - Your OrbitFlare license key. If not set, the SDK checks ORBITFLARE_LICENSE_KEY from the environment. The key is injected into the URL at request time, never stored in the endpoint. 
.api_key("ORBIT-XXXXXX-NNNNNN-NNNNNN")
.commitment(level) - Default commitment level used for all typed helpers. Options: "processed", "confirmed", "finalized". Defaults to "confirmed". 
.commitment("finalized")
.retry(policy) - Controls how the SDK retries failed requests. initial_delay is the wait before the first retry. multiplier scales the delay on each attempt. max_delay caps the backoff. max_attempts limits total retries per endpoint (0 means infinite). Defaults: 100ms initial, 30s max, 2x multiplier, infinite attempts. 
use orbitflare_sdk::RetryPolicy;
use std::time::Duration;

.retry(RetryPolicy {
    initial_delay: Duration::from_millis(200),
    max_delay: Duration::from_secs(15),
    multiplier: 2.0,
    max_attempts: 5,
})
.timeout(duration) - HTTP timeout for each individual request. Defaults to 30 seconds. 
.timeout(Duration::from_secs(10))

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Available RPC methods

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get_slot()

Returns the current slot number. 
let slot: u64 = client.get_slot().await?;

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get_balance(address)

Returns the balance in lamports for an account. 
let lamports: u64 = client.get_balance("So11111111111111111111111111111111111111112").await?;
let sol = lamports as f64 / 1_000_000_000.0;

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get_account_info(address)

Returns the full account data or None if the account doesn’t exist. Data is base64-encoded. 
let account: Option<serde_json::Value> = client.get_account_info("EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v").await?;
if let Some(info) = account {
    println!("owner: {}", info["owner"]);
    println!("lamports: {}", info["lamports"]);
    println!("data length: {}", info["data"][0].as_str().unwrap_or("").len());
}

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get_multiple_accounts(addresses)

Fetches multiple accounts in one call. Automatically chunks into batches of 100 (Solana’s per-request limit), so you can pass any number of addresses. 
let accounts: Vec<Option<serde_json::Value>> = client
    .get_multiple_accounts(&["addr1", "addr2", "addr3"])
    .await?;

for (i, acct) in accounts.iter().enumerate() {
    match acct {
        Some(info) => println!("account {i}: {} lamports", info["lamports"]),
        None => println!("account {i}: not found"),
    }
}

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get_latest_blockhash()

Returns the most recent blockhash and the last block height it’s valid for. 
let (blockhash, last_valid_block_height): (String, u64) = client.get_latest_blockhash().await?;

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get_transaction(signature)

Fetches a confirmed transaction by its signature. Returns the full transaction with metadata. 
let tx: serde_json::Value = client.get_transaction("5K8F2j...").await?;
println!("slot: {}", tx["slot"]);
println!("fee: {}", tx["meta"]["fee"]);

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get_signatures_for_address(address, limit)

Returns recent transaction signatures for an address, newest first. 
let sigs: Vec<serde_json::Value> = client
    .get_signatures_for_address("So111...", 10)
    .await?;

for sig in &sigs {
    println!("{} at slot {}", sig["signature"], sig["slot"]);
}

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get_program_accounts(program_id)

Returns all accounts owned by a program. Can return a lot of data. 
let accounts: Vec<serde_json::Value> = client
    .get_program_accounts("TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA")
    .await?;

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get_recent_prioritization_fees(addresses)

Returns recent priority fees for a set of accounts. Useful for estimating compute unit pricing. 
let fees: Vec<serde_json::Value> = client
    .get_recent_prioritization_fees(&["6EF8rrecthR5Dkzon8Nwu78hRvfCKubJ14M5uBEwF6P"])
    .await?;

for fee in &fees {
    println!("slot {}: {} micro-lamports", fee["slot"], fee["prioritizationFee"]);
}

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send_transaction(tx_base64)

Sends a signed transaction to the network. Takes a base64-encoded serialized transaction. Returns the transaction signature. 
let signature: String = client.send_transaction(tx_base64).await?;
println!("sent: {signature}");

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simulate_transaction(tx_base64)

Simulates a transaction without submitting it. Returns logs, compute units consumed, and any errors. 
let result: serde_json::Value = client.simulate_transaction(tx_base64).await?;
if let Some(err) = result["err"].as_str() {
    println!("simulation failed: {err}");
} else {
    println!("compute units: {}", result["unitsConsumed"]);
}

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get_token_accounts_by_owner(owner, mint, program_id)

Returns token accounts for a wallet. Pass either a specific mint or a token program ID. If both are None, defaults to the SPL Token program. 
let tokens: Vec<serde_json::Value> = client
    .get_token_accounts_by_owner("wallet_address", None, None)
    .await?;

for token in &tokens {
    let info = &token["account"]["data"]["parsed"]["info"];
    println!("mint: {} balance: {}",
        info["mint"],
        info["tokenAmount"]["uiAmountString"],
    );
}

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get_transactions_for_address(address, options)

OrbitFlare-specific method that combines getSignaturesForAddress and getTransaction into one call. Returns a GetTransactionsResult with the data array and an optional pagination_token for fetching the next page. Supports four detail levels (signatures, none, accounts, full), bidirectional sorting, time/slot filtering, status filtering, and token account inclusion. 
use orbitflare_sdk::{GetTransactionsOptions, GetTransactionsFilters, RangeFilter};

let result = client.get_transactions_for_address(
    "address",
    GetTransactionsOptions::new()
        .transaction_details("full")
        .limit(100)
        .sort_order("asc")
        .filters(
            GetTransactionsFilters::new()
                .token_accounts("all")
                .status("succeeded")
                .block_time(RangeFilter {
                    gte: Some(1704067200),
                    lte: Some(1706745600),
                    ..Default::default()
                })
        ),
).await?;

for tx in &result.data {
    println!("slot {}", tx["slot"]);
}

if let Some(token) = result.pagination_token {
    // fetch next page using .pagination_token(&token)
}

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request(method, params)

Call any RPC method by name. The SDK builds the JSON-RPC envelope, handles retry and failover, and returns the result field. 
use serde_json::json;

let epoch = client.request("getEpochInfo", json!([])).await?;
let inflation = client.request("getInflationRate", json!([])).await?;
let supply = client.request("getSupply", json!([])).await?;

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request_raw(body)

Send a raw JSON-RPC body string. Same retry and failover as everything else. 
let result = client
    .request_raw(r#"{"jsonrpc":"2.0","id":1,"method":"getHealth","params":[]}"#)
    .await?;

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Full example

A script that checks the state of the network, fetches a wallet’s SOL balance and token holdings, and looks up recent transactions. 
use orbitflare_sdk::{RpcClientBuilder, Result};

#[tokio::main]
async fn main() -> Result<()> {
    let client = RpcClientBuilder::new()
        .url("http://ny.rpc.orbitflare.com")
        .fallback_url("http://fra.rpc.orbitflare.com")
        .commitment("confirmed")
        .build()?;

    let wallet = "CKs1E69a2e9TmH4mKKLrXFF8kD3ZnwKjoEuXa6sz9WqX";

    let slot = client.get_slot().await?;
    let (blockhash, _) = client.get_latest_blockhash().await?;
    println!("network slot: {slot}");
    println!("blockhash: {blockhash}");

    let balance = client.get_balance(wallet).await?;
    println!("\n{wallet}");
    println!("  SOL: {:.4}", balance as f64 / 1_000_000_000.0);

    let tokens = client.get_token_accounts_by_owner(wallet, None, None).await?;
    for token in &tokens {
        let info = &token["account"]["data"]["parsed"]["info"];
        let mint = info["mint"].as_str().unwrap_or("unknown");
        let amount = info["tokenAmount"]["uiAmountString"].as_str().unwrap_or("0");
        if amount != "0" {
            println!("  {mint}: {amount}");
        }
    }

    let sigs = client.get_signatures_for_address(wallet, 5).await?;
    println!("\nrecent transactions:");
    for sig in &sigs {
        let signature = sig["signature"].as_str().unwrap_or("?");
        let slot = sig["slot"].as_u64().unwrap_or(0);
        let err = if sig["err"].is_null() { "ok" } else { "failed" };
        println!("  {slot} {err} {}", &signature[..20]);
    }

    let fees = client
        .get_recent_prioritization_fees(&[wallet])
        .await?;
    let avg: f64 = fees.iter()
        .filter_map(|f| f["prioritizationFee"].as_f64())
        .sum::<f64>() / fees.len().max(1) as f64;
    println!("\navg priority fee: {avg:.0} micro-lamports");

    Ok(())
}