chain_getRuntimeVersion

Returns the current runtime specification and transaction version for the node. As a developer, you use this to:

• Detect runtime upgrades and adjust clients accordingly (e.g., refresh metadata).
• Ensure your transaction building/signing logic matches the node’s transactionVersion.
• Gate feature flags or migrations based on specName/specVersion (e.g., API changes between releases).

Code Examples

cURL

curl -X POST https://api-bittensor-mainnet.n.dwellir.com/YOUR_API_KEY \
+  -H 'Content-Type: application/json' \
+  -d '{"jsonrpc":"2.0","method":"chain_getRuntimeVersion","params":[],"id":1}'

Python

import requests, json

url = 'https://api-bittensor-mainnet.n.dwellir.com/YOUR_API_KEY'
headers = {'Content-Type': 'application/json'}
payload = {
  "jsonrpc": "2.0",
  "method": "chain_getRuntimeVersion",
  "params": [],
  "id": 1
}
res = requests.post(url, headers=headers, data=json.dumps(payload))
print(res.json()['result'])

JavaScript

const res = await fetch('https://api-bittensor-mainnet.n.dwellir.com/YOUR_API_KEY', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
  "jsonrpc": "2.0",
  "method": "chain_getRuntimeVersion",
  "params": [],
  "id": 1
})
});
const data = await res.json();
console.log(data.result);