sendTransaction

Submits a signed transaction to the cluster for processing. The transaction must be fully signed and serialized in base-58 or base-64 encoding. This is the primary method for broadcasting transactions to the Solana network. The method returns a transaction signature immediately, but the transaction is not yet confirmed -- use getSignatureStatuses or confirmTransaction to verify it has been processed and finalized.

Parameters

#	Type	Required	Description
1	`string`	Yes	Fully-signed transaction as an encoded string
2	`object`	No	Configuration object

Configuration object fields:

Field	Type	Description
`encoding`	`string`	Encoding used for the transaction data: `base58` or `base64` (default `base58`)
`skipPreflight`	`bool`	If `true`, skip the preflight transaction checks (default `false`)
`preflightCommitment`	`string`	Commitment level for preflight checks (default `finalized`)
`maxRetries`	`usize`	Maximum number of times the RPC node will retry sending the transaction to the leader
`minContextSlot`	`number`	Minimum slot at which the request can be evaluated

Response

Returns a single value:

Field	Type	Description
`result`	`string`	First transaction signature embedded in the transaction (base-58)

Code Examples

cURL

1curl http://[IP_ADDRESS]:[PORT] -X POST -H "Content-Type: application/json" -d '{
2  "jsonrpc": "2.0",
3  "id": 1,
4  "method": "sendTransaction",
5  "params": [
6    "4hXTCkRzt9WyecNzV1XPgCDfGAZzQKNxLXgynz5QDuWWPSAZBZSHptvWRL3BjCvzUXRdKvHL2b7yGrRQcWyaqsaBCncVG7BFggS8w9snUts67BSh3EqKpXLUm5UMHfD7ZBe9GhARjbNQMLJ1QD3Spr6oMTBU6EhdB4RD8CP2xUxr2u3d6fos36PD98XS6oX8TQjLpsMwncs5DAMiD4nNnR8NBfyghGCWvCVifVwvA8B8TJxE1aiyiv9eYGUIKcJEKCA",
7    { "encoding": "base58" }
8  ]
9}'

TypeScript

1const response = await fetch("http://[IP_ADDRESS]:[PORT]", {
2  method: "POST",
3  headers: { "Content-Type": "application/json" },
4  body: JSON.stringify({
5    jsonrpc: "2.0",
6    id: 1,
7    method: "sendTransaction",
8    params: [
9      "4hXTCkRzt9WyecNzV1XPgCDfGAZzQKNxLXgynz5QDuWWPSAZBZSHptvWRL3BjCvzUXRdKvHL2b7yGrRQcWyaqsaBCncVG7BFggS8w9snUts67BSh3EqKpXLUm5UMHfD7ZBe9GhARjbNQMLJ1QD3Spr6oMTBU6EhdB4RD8CP2xUxr2u3d6fos36PD98XS6oX8TQjLpsMwncs5DAMiD4nNnR8NBfyghGCWvCVifVwvA8B8TJxE1aiyiv9eYGUIKcJEKCA",
10      { encoding: "base58" }
11    ]
12  }),
13});
14const { result } = await response.json();
15console.log("Transaction sent:", result);

Python

1import requests
2
3response = requests.post("http://[IP_ADDRESS]:[PORT]", json={
4    "jsonrpc": "2.0",
5    "id": 1,
6    "method": "sendTransaction",
7    "params": [
8        "4hXTCkRzt9WyecNzV1XPgCDfGAZzQKNxLXgynz5QDuWWPSAZBZSHptvWRL3BjCvzUXRdKvHL2b7yGrRQcWyaqsaBCncVG7BFggS8w9snUts67BSh3EqKpXLUm5UMHfD7ZBe9GhARjbNQMLJ1QD3Spr6oMTBU6EhdB4RD8CP2xUxr2u3d6fos36PD98XS6oX8TQjLpsMwncs5DAMiD4nNnR8NBfyghGCWvCVifVwvA8B8TJxE1aiyiv9eYGUIKcJEKCA",
9        {"encoding": "base58"}
10    ]
11})
12result = response.json()["result"]
13print(f"Transaction sent: {result}")

Rust

1use reqwest::Client;
2use serde_json::json;
3
4#[tokio::main]
5async fn main() -> Result<(), Box<dyn std::error::Error>> {
6    let client = Client::new();
7    let res = client.post("http://[IP_ADDRESS]:[PORT]")
8        .json(&json!({
9            "jsonrpc": "2.0",
10            "id": 1,
11            "method": "sendTransaction",
12            "params": [
13                "4hXTCkRzt9WyecNzV1XPgCDfGAZzQKNxLXgynz5QDuWWPSAZBZSHptvWRL3BjCvzUXRdKvHL2b7yGrRQcWyaqsaBCncVG7BFggS8w9snUts67BSh3EqKpXLUm5UMHfD7ZBe9GhARjbNQMLJ1QD3Spr6oMTBU6EhdB4RD8CP2xUxr2u3d6fos36PD98XS6oX8TQjLpsMwncs5DAMiD4nNnR8NBfyghGCWvCVifVwvA8B8TJxE1aiyiv9eYGUIKcJEKCA",
14                {"encoding": "base58"}
15            ]
16        }))
17        .send().await?
18        .text().await?;
19    println!("{}", res);
20    Ok(())
21}

Example Response

1{
2  "jsonrpc": "2.0",
3  "result": "5VERv8NMvzbJMEkV8xnrLkEaWRtSz9CosKDYjCJjBRnbJLgp8uirBgmQpjKhoR4tjF3ZpRzrFmBV6UjKdiSZkQUW",
4  "id": 1
5}