delegateInfo_getDelegate - Bittensor

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

Returns information for a single delegate by their hotkey. Same response shape as one element of delegateInfo_getDelegates. Cheaper than fetching all delegates when you only need one.

Bittensor-specific custom RPC method. This method is implemented by the Subtensor runtime and is not part of the standard Substrate JSON-RPC surface. Call against a GetBlock endpoint configured for the Substrate interface. The Bittensor Python SDK provides typed wrappers; standard Polkadot.js and substrateinterface require the raw RPC interface (see SDK Integration tabs below).

Parameters

Parameter	Type	Required	Description
delegateHotkey	string	Yes	SS58-encoded delegate hotkey
blockHash	string	No	Block hash to query at

Request Example

cURL

curl --location --request POST 'https://go.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "delegateInfo_getDelegate",
    "params": [
        "5GpwjAKpRJ3JpDLvuLn8KGkbSYzZHC9YMVtMs7vCYK4tFKfP"
    ],
    "id": "getblock.io"
}'

JavaScript (Axios)

import axios from 'axios';

const data = JSON.stringify({
    "jsonrpc": "2.0",
    "method": "delegateInfo_getDelegate",
    "params": [
        "5GpwjAKpRJ3JpDLvuLn8KGkbSYzZHC9YMVtMs7vCYK4tFKfP"
    ],
    "id": "getblock.io"
});

const config = {
    method: 'post',
    url: 'https://go.getblock.io/<ACCESS-TOKEN>/',
    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://go.getblock.io/<ACCESS-TOKEN>/"

payload = json.dumps({
    "jsonrpc": "2.0",
    "method": "delegateInfo_getDelegate",
    "params": [
        "5GpwjAKpRJ3JpDLvuLn8KGkbSYzZHC9YMVtMs7vCYK4tFKfP"
    ],
    "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": "delegateInfo_getDelegate",
        "params": [
                "5GpwjAKpRJ3JpDLvuLn8KGkbSYzZHC9YMVtMs7vCYK4tFKfP"
        ],
        "id": "getblock.io"
});

    let response = client
        .post("https://go.getblock.io/<ACCESS-TOKEN>/")
        .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",
  "id": "getblock.io",
  "result": {
    "delegateSs58": "5GpwjAKpRJ3JpDLvuLn8KGkbSYzZHC9YMVtMs7vCYK4tFKfP",
    "take": 11796,
    "nominators": [
      [
        "5Hp1q5K7T8QYsxwBwYjqkZ1QzGqgYqU3pwMwYqDdjjEqLqJk",
        "5000000000000"
      ]
    ],
    "ownerSs58": "5Hp1q5K7T8QYsxwBwYjqkZ1QzGqgYqU3pwMwYqDdjjEqLqJk",
    "registrations": [
      1,
      2,
      5,
      8,
      11
    ],
    "validatorPermits": [
      1,
      5,
      8
    ],
    "returnPer1000": "12345678",
    "totalDailyReturn": "98765432100"
  }
}

Response Parameters

Field	Type	Description
result	object | null	Delegate info, or null if the hotkey is not registered as a delegate

Use Cases

• Delegate profile pages

• Pre-stake verification — confirm a delegate's take and subnet coverage before staking

• Continuous monitoring of a delegate's performance

Error Handling

Status Code	Error Message	Cause
403	Forbidden	Missing or invalid <ACCESS-TOKEN>
-32602	Invalid params	Request parameters are missing or malformed
-32601	Method not found	Method does not exist on this interface — check whether you're calling a Substrate method on an EVM endpoint or vice versa
-32603	Internal error	Server-side error while processing the request
429	Too Many Requests	Rate limit exceeded for your plan

SDK Integration

Bittensor SDK (Python)

import bittensor as bt

# Bittensor SDK provides typed wrappers for chain-specific data.
# The subtensor client routes to the appropriate custom RPC under the hood:
subtensor = bt.subtensor(network="finney")  # or pass GetBlock URL

# Example for subnetInfo_getSubnetInfo:
# subnet_info = subtensor.get_subnet_info(netuid=1)
# print(subnet_info)

# Or use the raw RPC interface for any custom method:
result = subtensor.substrate.rpc_request("delegateInfo_getDelegate", ["5GpwjAKpRJ3JpDLvuLn8KGkbSYzZHC9YMVtMs7vCYK4tFKfP"])
print(result)

Polkadot.js raw (TypeScript)

import { ApiPromise, WsProvider } from '@polkadot/api';

const provider = new WsProvider('wss://go.getblock.io/<ACCESS-TOKEN>/');
const api = await ApiPromise.create({ provider });

// Bittensor-specific RPCs need the raw send() interface
// (they aren't part of standard Polkadot.js typed wrappers):
const result = await api.rpc.send({
    method: 'delegateInfo_getDelegate',
    params: ["5GpwjAKpRJ3JpDLvuLn8KGkbSYzZHC9YMVtMs7vCYK4tFKfP"]
});
console.log(result);