admin_validatorKey - Tempo

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

Returns the node's ed25519 validator public key if configured, or null for non-validator nodes. Available only on self-hosted Tempo nodes started with --http.api admin.

SELF-HOSTED-ONLY METHOD. This method is part of the admin_* namespace and is only available on self-hosted Tempo nodes started with --http.api admin. It is not available on any shared or managed RPC provider, including GetBlock. Documented here for completeness of the Tempo RPC surface; for operational reasons it cannot be exposed on multi-tenant infrastructure.

Parameters

None

Request Example

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

import requests
import json

url = "https://go.getblock.io/<ACCESS-TOKEN>/"

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

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

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

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": "admin_validatorKey",
        "params": [],
        "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": "0x8e1aa0e2d4c7f9d4b0c8b8d5f1a2b3c4d5e6f7a8b9c0d1e2f3a4b5c6d7e8f9a0"
}

Response Parameters

Field

Type

Description

result

string or null

Hex-encoded ed25519 validator public key, or null if not configured as a validator

Use Cases

Validator operations — confirming the correct keypair is loaded
Validator monitoring scripts running locally on the validator host

Error Handling

Status Code

Error Message

Cause

403

Forbidden

Missing or invalid <ACCESS-TOKEN>

-32602

Invalid params

Request parameters are missing or malformed

429

Too Many Requests

Rate limit exceeded for your plan

-32601

Method not found

The admin API is not enabled on this node — not exposed on managed infrastructure

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