eth_syncing

Returns an object with data about the sync status or false on Avalanche C-Chain.

Parameters

This method accepts no parameters.

{
  "jsonrpc": "2.0",
  "method": "eth_syncing",
  "params": [],
  "id": 1
}

Returns

Object|Boolean - An object with sync status data or FALSE, when not syncing:

• startingBlock: QUANTITY - The block at which the import started (will only be reset, after the sync reached his head)
• currentBlock: QUANTITY - The current block, same as eth_blockNumber
• highestBlock: QUANTITY - The estimated highest block

Implementation Example

cURL

curl -X POST https://api-avalanche-mainnet-archive.n.dwellir.com/YOUR_API_KEY/ext/bc/C/rpc \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "method": "eth_syncing",
    "params": [],
    "id": 1
  }'

JavaScript

const response = await fetch('https://api-avalanche-mainnet-archive.n.dwellir.com/YOUR_API_KEY/ext/bc/C/rpc', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    jsonrpc: '2.0',
    method: 'eth_syncing',
    params: [],
    id: 1
  })
});

const data = await response.json();
console.log(data.result);

Response Example

When syncing

{
  "id": 1,
  "jsonrpc": "2.0",
  "result": {
    "startingBlock": "0x384",
    "currentBlock": "0x386",
    "highestBlock": "0x454"
  }
}

When not syncing

{
  "id": 1,
  "jsonrpc": "2.0",
  "result": false
}

Note: Avalanche's fast block times mean sync status changes frequently. A false result indicates the node is fully synced.

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Need help? Contact our support team or check the Avalanche documentation.