avm.getTx - AVAX

Example code for the avm.getTx JSON-RPC method. Complete guide on how to use avm.getTx JSON-RPC in GetBlock Web3 documentation.

Returns an X-Chain transaction by its ID. Useful for inspecting any past transfer or atomic transaction.

Parameters

Parameter	Type	Required	Description
txID	string	Yes	Transaction ID (CB58)
encoding	string	No	Response encoding — "hex" (default), "cb58", or "json"

Request Example

cURL

curl --location --request POST 'https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/ext/bc/X' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "avm.getTx",
    "params": {
        "txID": "2oyUzwwCLpYn6MyKyNaJe2FcCgXqnmNENyiCNKocfsWcjvmard",
        "encoding": "json"
    },
    "id": "getblock.io"
}'

JavaScript (Axios)

import axios from 'axios';

const data = JSON.stringify({
    "jsonrpc": "2.0",
    "method": "avm.getTx",
    "params": {
        "txID": "2oyUzwwCLpYn6MyKyNaJe2FcCgXqnmNENyiCNKocfsWcjvmard",
        "encoding": "json"
    },
    "id": "getblock.io"
});

const config = {
    method: 'post',
    url: 'https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/ext/bc/X',
    headers: {
        'Content-Type': 'application/json'
    },
    data: data
};

axios(config)
    .then(response => console.log(JSON.stringify(response.data, null, 2)))
    .catch(error => console.log(error));

Python (Requests)

import requests
import json

url = "https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/ext/bc/X"

payload = json.dumps({
    "jsonrpc": "2.0",
    "method": "avm.getTx",
    "params": {
        "txID": "2oyUzwwCLpYn6MyKyNaJe2FcCgXqnmNENyiCNKocfsWcjvmard",
        "encoding": "json"
    },
    "id": "getblock.io"
})

headers = {
    'Content-Type': 'application/json'
}

response = requests.post(url, headers=headers, data=payload)
print(response.text)

Rust (Reqwest)

use reqwest::Client;
use serde_json::json;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = Client::new();

    let payload = json!({
        "jsonrpc": "2.0",
        "method": "avm.getTx",
        "params": {
            "txID": "2oyUzwwCLpYn6MyKyNaJe2FcCgXqnmNENyiCNKocfsWcjvmard",
            "encoding": "json"
        },
        "id": "getblock.io"
    });

    let response = client
        .post("https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/ext/bc/X")
        .header("Content-Type", "application/json")
        .json(&payload)
        .send()
        .await?;

    let result: serde_json::Value = response.json().await?;
    println!("{:#?}", result);

    Ok(())
}

Response Example

{
    "jsonrpc": "2.0",
    "result": {
        "tx": {
            "unsignedTx": {
                "networkID": 1,
                "blockchainID": "2oYMBNV4eNHyqk2fjjV5nVQLDbtmNJzq5s3qs3Lo6ftnC6FByM",
                "outputs": [
                    {
                        "assetID": "FvwEAhmxKfeiG8SnEvq42hc6whRyY3EFYAvebMqDNDGCgxN5Z",
                        "fxID": "spdxUxVJQbX85MGxMHbKw1sHxMnSqJ3QBzDyDYEP3h6TLuxqQ",
                        "output": {
                            "addresses": [
                                "X-avax1kgxpsws29gfzsm50ge4yucp3fjpzznklcckzag"
                            ],
                            "amount": 644347000,
                            "locktime": 0,
                            "threshold": 1
                        }
                    },
                    {
                        "assetID": "FvwEAhmxKfeiG8SnEvq42hc6whRyY3EFYAvebMqDNDGCgxN5Z",
                        "fxID": "spdxUxVJQbX85MGxMHbKw1sHxMnSqJ3QBzDyDYEP3h6TLuxqQ",
                        "output": {
                            "addresses": [
                                "X-avax1y9gqplplrrmpqdqgp0k6ketpufny2k9vxnlfry"
                            ],
                            "amount": 216823360653000,
                            "locktime": 0,
                            "threshold": 1
                        }
                    }
                ],
                "inputs": [
                    {
                        "txID": "nn1fVC6vzYdP1U1kc8scrX6ETEfBSyPA1vDhLFEYXLsyF6px5",
                        "outputIndex": 1,
                        "assetID": "FvwEAhmxKfeiG8SnEvq42hc6whRyY3EFYAvebMqDNDGCgxN5Z",
                        "fxID": "spdxUxVJQbX85MGxMHbKw1sHxMnSqJ3QBzDyDYEP3h6TLuxqQ",
                        "input": {
                            "amount": 216824006000000,
                            "signatureIndices": [
                                0
                            ]
                        }
                    }
                ],
                "memo": "0x"
            },
            "credentials": [
                {
                    "fxID": "spdxUxVJQbX85MGxMHbKw1sHxMnSqJ3QBzDyDYEP3h6TLuxqQ",
                    "credential": {
                        "signatures": [
                            "0xcdee8b67f426e4d514e598ea32aebbf479724b0941bbaae983eb360178d6f6b66b8da70ab0dcd04e4e7bbca912357145194d54c1e593c3b06cd597a965f13b4101"
                        ]
                    }
                }
            ],
            "id": "2oyUzwwCLpYn6MyKyNaJe2FcCgXqnmNENyiCNKocfsWcjvmard"
        },
        "encoding": "json"
    },
    "id": "getblock.io"
}

Response Parameters

Field	Type	Description
result.tx	object | string	Transaction body — object when encoding=json, hex/cb58 string otherwise
result.encoding	string	Encoding used

Use Cases

• Inspecting historical X-Chain transactions

• Building X-Chain explorers

• Audit trails and forensics on native asset transfers

Error Handling

Status Code	Error Message	Cause
404	Not found	Missing or invalid <ACCESS-TOKEN>
-32602	Invalid params	Request parameters are missing or malformed
429	Too Many Requests	Rate limit exceeded for your plan

SDK Integration

AvalancheJS / Axios

// AvalancheJS provides typed clients for P-Chain and X-Chain.
// X-Chain operations are exposed through `avm` in AvalancheJS.
// For raw JSON-RPC access, use a generic HTTP client as in the Request Example.
import axios from 'axios';

const response = await axios.post('https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/ext/bc/X', {
    jsonrpc: '2.0',
    id: 'getblock.io',
    method: 'avm.getTx',
    params: {
        txID: "2kxwWpHvZPhMsJcSTmM7a3Da7sExB8pPyF7t4cr2NSwnYqNHni",
        encoding: "json"
    }
});
console.log(response.data);

Python

# AvalancheJS is JavaScript-only. For Python, use a generic JSON-RPC client.
import requests
import json

url = 'https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/ext/bc/X'
payload = {
    'jsonrpc': '2.0',
    'id': 'getblock.io',
    'method': 'avm.getTx',
    'params': {
        "txID": "2kxwWpHvZPhMsJcSTmM7a3Da7sExB8pPyF7t4cr2NSwnYqNHni",
        "encoding": "json"
    }
}
response = requests.post(url, json=payload)
print(response.json())