Node API
Supported Chains
API Reference
0G

0G

0G API is available on Web3 API platform (opens in a new tab).

0G Chain is a highly scalable, AI-optimized L1 blockchain designed to meet the needs of data-heavy applications. Built with a modular architecture, it allows for the independent optimization of key components like consensus, execution, and storage—making it ideal for AI-driven workflows. 0G is fully EVM-compatible, so decentralized applications (dApps) already deployed on other L1 or L2 chains (such as Ethereum or rollups) can easily leverage 0G's products without needing to migrate entirely.

0G Chain supports a data availability network, distributed storage network, and AI compute network. All of these networks integrate with 0G Chain's highly scalable consensus network, built to handle massive data volumes suitable for AI.

In order for your Web3 application to interact with 0G — either by reading blockchain data or sending transactions to the network — it must connect to an 0G node. Developers interact with the blockchain using the methods provided by the API.

We support the following networks and protocols for 0G:

Responses come in JSON format (opens in a new tab).

EVM JSON-RPC methods

web3_clientVersion

Returns the current client version.

Parameters

  • id (integer; required): a request ID (example: 1).
  • jsonrpc (string; required): a JSON RPC spec used (example: 2.0).
  • method (string; required): a method used for the request.
  • params (array; required): none.

Returns

  • <string>: the current client version.

Request example

curl -X POST https://rpc.ankr.com/0g_newton \
-H 'Content-Type: application/json' \
-d '{
      "jsonrpc": "2.0",
      "method": "web3_clientVersion",
      "params": [],
      "id": 1
    }'

Response example

{
    "id": 1,
    "jsonrpc": "2.0",
    "result": "Version dev ()\nCompiled at  using Go go1.21.13 (amd64)"
}

web3_sha3

Returns Keccak-256 (not the standardized SHA3-256) of the given data.

Parameters

  • id (integer; required): a request ID (example: 1).

  • jsonrpc (string; required): a JSON RPC spec used (example: 2.0).

  • method (string; required): a method used for the request.

  • params (array; required):

    • <string> (data): the data to convert into a SHA3 hash.

Returns

  • <string> (data): the SHA3 result of the given string.

Request example

curl -X POST https://rpc.ankr.com/0g_newton \
-H 'Content-Type: application/json' \
-d '{
      "jsonrpc": "2.0",
      "method": "web3_sha3",
      "params": ["0x68656c6c6f20776f726c64"],
      "id": 1
    }'

Response example

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "0x5b2c76da96136d193336fad3fbc049867b8ca157da22f69ae0e4923648250acc"
}

net_version

Returns the current network ID.

Parameters

  • id (integer; required): a request ID (example: 1).
  • jsonrpc (string; required): a JSON RPC spec used (example: 2.0).
  • method (string; required): a method used for the request.
  • params (array; required): none.

Returns

  • <string>: the current network ID.

Request example

curl -X POST https://rpc.ankr.com/0g_newton \
-H 'Content-Type: application/json' \
-d '{
      "jsonrpc": "2.0",
      "method": "net_version",
      "params": [],
      "id": 1
    }'

Response example

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "16600"
}

net_listening

Returns true if client is actively listening for network connections.

Parameters

  • id (integer; required): a request ID (example: 1).
  • jsonrpc (string; required): a JSON RPC spec used (example: 2.0).
  • method (string; required): a method used for the request.
  • params (array; required): none.

Returns

  • <boolean>: true when listening, otherwise false.

Request example

curl -X POST https://rpc.ankr.com/0g_newton \
-H 'Content-Type: application/json' \
-d '{
      "jsonrpc": "2.0",
      "method": "net_listening",
      "params": [],
      "id": 1
    }'

Response example

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

eth_syncing

Returns an object with data about the sync status or false.

Parameters

  • id (integer; required): a request ID (example: 1).
  • jsonrpc (string; required): a JSON RPC spec used (example: 2.0).
  • method (string; required): a method used for the request.
  • params (array; required): none.

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 its head).
    • currentBlock (quantity): the current block, same as eth_blockNumber.
    • highestBlock (quantity): the estimated highest block.

Request example

curl -X POST https://rpc.ankr.com/0g_newton \
-H 'Content-Type: application/json' \
-d '{
      "jsonrpc": "2.0",
      "method": "eth_syncing",
      "params": [],
      "id": 1
    }'

Response example

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

eth_gasPrice

Returns the current price per gas in wei.

Parameters

  • id (integer; required): a request ID (example: 1).
  • jsonrpc (string; required): a JSON RPC spec used (example: 2.0).
  • method (string; required): a method used for the request.
  • params (array; required): none.

Returns

  • <string> (quantity): the current gas price in wei.

Request example

curl -X POST https://rpc.ankr.com/0g_newton \
-H 'Content-Type: application/json' \
-d '{
      "jsonrpc": "2.0",
      "method": "eth_gasPrice",
      "params": [],
      "id": 1
    }'

Response example

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "0x14"
}

eth_accounts

Returns a list of addresses owned by client.

Parameters

  • id (integer; required): a request ID (example: 1).
  • jsonrpc (string; required): a JSON RPC spec used (example: 2.0).
  • method (string; required): a method used for the request.
  • params (array; required): none.

Returns

  • <array> (string; data, 20 bytes): addresses owned by the client.

Request example

curl -X POST https://rpc.ankr.com/0g_newton \
-H 'Content-Type: application/json' \
-d '{
      "jsonrpc": "2.0",
      "method": "eth_accounts",
      "params": [],
      "id": 1
    }'

Response example

{
    "id": 1,
    "jsonrpc": "2.0",
    "result": []
}

eth_blockNumber

Returns the number of most recent block.

Parameters

  • id (integer; required): a request ID (example: 1).
  • jsonrpc (string; required): a JSON RPC spec used (example: 2.0).
  • method (string; required): a method used for the request.
  • params (array; required): none.

Returns

  • <string> (quantity): the current block number the client is on.

Request example

curl -X POST https://rpc.ankr.com/0g_newton \
-H 'Content-Type: application/json' \
-d '{
      "jsonrpc": "2.0",
      "method": "eth_blockNumber",
      "params": [],
      "id": 1
    }'

Response example

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "0x27221a"
}

eth_getBalance

Returns the balance of the account specified by address.

Parameters

  • id (integer; required): a request ID (example: 1).

  • jsonrpc (string; required): a JSON RPC spec used (example: 2.0).

  • method (string; required): a method used for the request.

  • params (array; required):

    1. <string> (data, 20 bytes): an address to check for balance.
    2. <string> (quantity|tag): either the hex value of a block number or one of the following block tags:
      • earliest: the lowest numbered block available on the client.
      • finalized: the most recent crypto-economically secure block; cannot be re-orged outside of manual intervention driven by community coordination.
      • safe: the most recent block that is safe from re-orgs under honest majority and certain synchronicity assumptions.
      • latest: the most recent block in the canonical chain observed by the client; this block can be re-orged out of the canonical chain even under healthy/normal conditions.
      • pending: a sample next block built by the client on top of the latest and containing the set of transactions usually taken from local mempool. In other words, it is the block that has not been mined yet.

Returns

  • <string> (quantity): the current balance in wei.

Request example

curl -X POST https://rpc.ankr.com/0g_newton \
-H 'Content-Type: application/json' \
-d '{
      "jsonrpc": "2.0",
      "method": "eth_getBalance",
      "params": ["0x83c4A688174A8d4b99b4C8A2feC124dff79D58d2", "latest"],
      "id": 1
    }'

Response example

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "0x209e65811b7e34e40de0"
}

eth_getStorageAt

Returns the value from a storage position at an address specified.

Parameters

  • id (integer; required): a request ID (example: 1).

  • jsonrpc (string; required): a JSON RPC spec used (example: 2.0).

  • method (string; required): a method used for the request.

  • params (array; required):

    1. <string> (data, 20 bytes): an address of the storage (hex encoded).

    2. <string> (quantity): a slot position in the storage (hex encoded unsigned integer).

    3. <string> (quantity|tag): either the hex value of a block number or one of the following block tags:

      • earliest: the lowest numbered block available on the client.
      • finalized: the most recent crypto-economically secure block; cannot be re-orged outside of manual intervention driven by community coordination.
      • safe: the most recent block that is safe from re-orgs under honest majority and certain synchronicity assumptions.
      • latest: the most recent block in the canonical chain observed by the client; this block can be re-orged out of the canonical chain even under healthy/normal conditions.
      • pending: a sample next block built by the client on top of the latest and containing the set of transactions usually taken from local mempool. In other words, it is the block that has not been mined yet.

Returns

  • <string> (data): the value at this storage position.

Request example

curl -X POST https://rpc.ankr.com/0g_newton \
-H 'Content-Type: application/json' \
-d '{
      "jsonrpc": "2.0",
      "method": "eth_getStorageAt",
      "params": ["0x83c4A688174A8d4b99b4C8A2feC124dff79D58d2", "0x0", "latest"],
      "id": 1
    }'

Response example

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "0x0000000000000000000000000000000000000000000000000000000000000000"
}

eth_getTransactionCount

Returns the number of transactions sent from an address.

Parameters

  • id (integer; required): a request ID (example: 1).

  • jsonrpc (string; required): a JSON RPC spec used (example: 2.0).

  • method (string; required): a method used for the request.

  • params (array; required):

    1. <string> (data, 20 bytes): an address.

    2. <string> (quantity|tag): either the hex value of a block number or one of the following block tags:

      • earliest: the lowest numbered block available on the client.
      • finalized: the most recent crypto-economically secure block; cannot be re-orged outside of manual intervention driven by community coordination.
      • safe: the most recent block that is safe from re-orgs under honest majority and certain synchronicity assumptions.
      • latest: the most recent block in the canonical chain observed by the client; this block can be re-orged out of the canonical chain even under healthy/normal conditions.
      • pending: a sample next block built by the client on top of the latest and containing the set of transactions usually taken from local mempool. In other words, it is the block that has not been mined yet.

Returns

  • <string> (quantity): the number of transactions send from this address.

Request example

curl -X POST https://rpc.ankr.com/0g_newton \
-H 'Content-Type: application/json' \
-d '{
      "jsonrpc": "2.0",
      "method": "eth_getTransactionCount",
      "params": ["0x83c4A688174A8d4b99b4C8A2feC124dff79D58d2", "latest"],
      "id": 1
    }'

Response example

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "0xc9121"
}

eth_getBlockTransactionCountByHash

Returns the number of transactions in a block specified by block hash.

Parameters

  • id (integer; required): a request ID (example: 1).

  • jsonrpc (string; required): a JSON RPC spec used (example: 2.0).

  • method (string; required): a method used for the request.

  • params (array; required):

    1. <string> (data, 32 bytes): a block hash.

Returns

  • <string> (quantity): the number of transactions in this block.

Request example:

curl -X POST https://rpc.ankr.com/0g_newton \
-H 'Content-Type: application/json' \
-d '{
      "jsonrpc": "2.0",
      "method": "eth_getBlockTransactionCountByHash",
      "params": ["0x14d481f2a9bd51b3bb5ab2b64d41deb7083b9b8036969d407da673d163a09905"],
      "id": 1
    }'

Response example

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "0x1"
}

eth_getBlockTransactionCountByNumber

Returns the number of transactions in the block specified by number.

Parameters

  • id (integer; required): a request ID (example: 1).

  • jsonrpc (string; required): a JSON RPC spec used (example: 2.0).

  • method (string; required): a method used for the request.

  • params (array; required):

    1. <string> (quantity|tag): either the hex value of a block number or one of the following block tags:
      • earliest: the lowest numbered block available on the client.
      • finalized: the most recent crypto-economically secure block; cannot be re-orged outside of manual intervention driven by community coordination.
      • safe: the most recent block that is safe from re-orgs under honest majority and certain synchronicity assumptions.
      • latest: the most recent block in the canonical chain observed by the client; this block can be re-orged out of the canonical chain even under healthy/normal conditions.
      • pending: a sample next block built by the client on top of the latest and containing the set of transactions usually taken from local mempool. In other words, it is the block that has not been mined yet.

Returns

  • <string> (quantity): the number of transactions in this block.

Request example

curl -X POST https://rpc.ankr.com/0g_newton \
-H 'Content-Type: application/json' \
-d '{
      "jsonrpc": "2.0",
      "method": "eth_getBlockTransactionCountByNumber",
      "params": ["0x87D"],
      "id": 1
    }'

Response example

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "0x1"
}

eth_getUncleCountByBlockHash

Returns the number of uncles in a block specified by block hash.

Parameters

  • id (integer; required): a request ID (example: 1).

  • jsonrpc (string; required): a JSON RPC spec used (example: 2.0).

  • method (string; required): a method used for the request.

  • params (array; required):

    1. <string> (data, 32 bytes): a block hash.

Returns

  • <string> (quantity): the number of uncles in this block.

Request example

curl -X POST https://rpc.ankr.com/0g_newton \
-H 'Content-Type: application/json' \
-d '{
      "jsonrpc": "2.0",
      "method": "eth_getUncleCountByBlockHash",
      "params": ["0x14d481f2a9bd51b3bb5ab2b64d41deb7083b9b8036969d407da673d163a09905"],
      "id": 1
    }'

Response example

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "0x0"
}

eth_getUncleCountByBlockNumber

Returns the number of uncles in a block specified by block number.

Parameters

  • id (integer; required): a request ID (example: 1).

  • jsonrpc (string; required): a JSON RPC spec used (example: 2.0).

  • method (string; required): a method used for the request.

  • params (array; required):

    1. <string> (quantity|tag): either the hex value of a block number or one of the following block tags:
      • earliest: the lowest numbered block available on the client.
      • finalized: the most recent crypto-economically secure block; cannot be re-orged outside of manual intervention driven by community coordination.
      • safe: the most recent block that is safe from re-orgs under honest majority and certain synchronicity assumptions.
      • latest: the most recent block in the canonical chain observed by the client; this block can be re-orged out of the canonical chain even under healthy/normal conditions.
      • pending: a sample next block built by the client on top of the latest and containing the set of transactions usually taken from local mempool. In other words, it is the block that has not been mined yet.

Returns

  • <string> (quantity): the number of uncles in this block.

Request example

curl -X POST https://rpc.ankr.com/0g_newton \
-H 'Content-Type: application/json' \
-d '{
      "jsonrpc": "2.0",
      "method": "eth_getUncleCountByBlockNumber",
      "params": ["0x87D"],
      "id": 1
    }'

Response example

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "0x0"
}

eth_getCode

Returns code at a given address.

Parameters

  • id (integer; required): a request ID (example: 1).

  • jsonrpc (string; required): a JSON RPC spec used (example: 2.0).

  • method (string; required): a method used for the request.

  • params (array; required):

    1. <string> (data, 20 bytes): an address to get the code from.
    2. <string> (quantity|tag): either the hex value of a block number or one of the following block tags:
      • earliest: the lowest numbered block available on the client.
      • finalized: the most recent crypto-economically secure block; cannot be re-orged outside of manual intervention driven by community coordination.
      • safe: the most recent block that is safe from re-orgs under honest majority and certain synchronicity assumptions.
      • latest: the most recent block in the canonical chain observed by the client; this block can be re-orged out of the canonical chain even under healthy/normal conditions.
      • pending: a sample next block built by the client on top of the latest and containing the set of transactions usually taken from local mempool. In other words, it is the block that has not been mined yet.

Returns

  • <string> (data): the code from the given address.

Request example

curl -X POST https://rpc.ankr.com/0g_newton \
-H 'Content-Type: application/json' \
-d '{
      "jsonrpc": "2.0",
      "method": "eth_getCode",
      "params": ["0x83c4A688174A8d4b99b4C8A2feC124dff79D58d2", "latest"],
      "id": 1
    }'

Response example

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "0x"
}

eth_sendRawTransaction

Creates new message call transaction or a contract creation for signed transactions.

Parameters

  • id (integer; required): a request ID (example: 1).

  • jsonrpc (string; required): a JSON RPC spec used (example: 2.0).

  • method (string; required): a method used for the request.

  • params (array; required):

    1. <string> (data): the signed transaction data.

Returns

  • <string> (data, 32 bytes): the transaction hash, or the zero hash if the transaction is not yet available.

Use eth_getTransactionReceipt to get the contract address, after the transaction was mined, when you created a contract.

Request example

curl -X POST https://rpc.ankr.com/0g_newton \
-H 'Content-Type: application/json' \
-d '{
    "jsonrpc": "2.0",
    "method": "eth_sendRawTransaction",
    "params": ["signed_tx_data"],
    "id": 1
}'

Response example

{
    "id": 1,
    "jsonrpc": "2.0",
    "result": "0xe670ec64341771606e55d6b4ca35a1a6b75ee3d5145a99d05921026d1527331"
}

eth_call

Executes a new message call immediately without creating a transaction on the blockchain.

Parameters

  • id (integer; required): a request ID (example: 1).

  • jsonrpc (string; required): a JSON RPC spec used (example: 2.0).

  • method (string; required): a method used for the request.

  • params (array; required):

    1. <object> (hex encoded): the transaction object:

      • from (string; data, 20 bytes; optional): the address the transaction is sent from.
      • to (string; data, 20 bytes): the address the transaction is directed to.
      • gas (string; quantity; optional): the gas provided for the transaction execution. eth_call consumes zero gas, but this parameter may be needed by some executions.
      • gasPrice (string; quantity; optional): the gas price willing to be paid by the sender in wei.
      • value (string; quantity; optional): the value sent with this transaction, in wei.
      • data (string; data; optional): the hash of the method signature and encoded parameters.

    2. <string> (quantity|tag): either the hex value of a block number or one of the following block tags:

      • earliest: the lowest numbered block available on the client.
      • finalized: the most recent crypto-economically secure block; cannot be re-orged outside of manual intervention driven by community coordination.
      • safe: the most recent block that is safe from re-orgs under honest majority and certain synchronicity assumptions.
      • latest: the most recent block in the canonical chain observed by the client; this block can be re-orged out of the canonical chain even under healthy/normal conditions.
      • pending: a sample next block built by the client on top of the latest and containing the set of transactions usually taken from local mempool. In other words, it is the block that has not been mined yet.

Returns

  • <string> (hex encoded bytes): the return value of executed contract.

Request example

curl -X POST https://rpc.ankr.com/0g_newton \
-H 'Content-Type: application/json' \
-d '{
    "jsonrpc": "2.0",
    "method": "eth_call",
    "params": [
        {
            "to": "0x6b175474e89094c44da98b954eedeac495271d0f",
            "data": "0x70a08231000000000000000000000000a0df350d2637096571f7a701cb08f08f0775fcf9"
        },
        "latest"
    ],
    "id": 1
}'

Response example

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "0x"
}

eth_estimateGas

Generates and returns an estimate of how much gas is necessary to allow the transaction to complete.

The transaction will not be added to the blockchain. Note that the estimate may be significantly more than the amount of gas actually used by the transaction, for a variety of reasons including EVM mechanics and node performance.

Parameters

  • id (integer; required): a request ID (example: 1).

  • jsonrpc (string; required): a JSON RPC spec used (example: 2.0).

  • method (string; required): a method used for the request.

  • params (array; required):

    1. <object> (hex encoded): the transaction object:

      • from (string; data, 20 bytes; optional): the address the transaction is sent from.
      • to (string; data, 20 bytes; optional): the address the transaction is directed to.
      • gas (string; quantity; optional): the gas provided for the transaction execution. eth_call consumes zero gas, but this parameter may be needed by some executions.
      • gasPrice (string; quantity; optional): the gas price willing to be paid by the sender in wei.
      • value (string; quantity; optional): the value sent with this transaction, in wei.
      • data (string; data; optional): the hash of the method signature and encoded parameters.

    2. <string> (quantity|tag; optional): either a HEX value of a block number or one of the following block tags:

      • earliest: the lowest numbered block available on the client.
      • finalized: the most recent crypto-economically secure block; cannot be re-orged outside of manual intervention driven by community coordination.
      • safe: the most recent block that is safe from re-orgs under honest majority and certain synchronicity assumptions.
      • latest: the most recent block in the canonical chain observed by the client; this block can be re-orged out of the canonical chain even under healthy/normal conditions.
      • pending: a sample next block built by the client on top of the latest and containing the set of transactions usually taken from local mempool. In other words, it is the block that has not been mined yet.

Returns

  • <string> (quantity): the amount of gas used.

Request example

curl -X POST https://rpc.ankr.com/0g_newton \
-H 'Content-Type: application/json' \
-d '{
    "jsonrpc": "2.0",
    "method": "eth_estimateGas",
    "params": [
        {
            "from": "0x83c4A688174A8d4b99b4C8A2feC124dff79D58d2",
            "to": "0x7E359114E9098cBeB28f4e23648a39E3Fcb915D0",
            "data": "0xa9059cbb000000000000000000000000a0df350d2637096571f7a701cb08f08f0775fcf90000000000000000000000000000000000000000000000000000000000000064"
        }
    ],
    "id": 1
}'

Response example

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "0x705a"
}

eth_getBlockByHash

Returns information for the block specified by block hash.

Parameters

  • id (integer; required): a request ID (example: 1).

  • jsonrpc (string; required): a JSON RPC spec used (example: 2.0).

  • method (string; required): a method used for the request.

  • params (array; required):

    1. <string> (data, 32 bytes): the block hash.
    2. <boolean>: if true it returns the full transaction objects, if false — only the hashes of the transactions.

Returns

  • <object>: a block object, or null when no block was found:
    • number (string; quantity): the block number; null when it's a pending block.
    • hash (string; data, 32 bytes): the hash of the block; null when it's a pending block.
    • parentHash (string; data, 32 bytes): the hash of the parent block.
    • nonce (string; data, 8 bytes): the hash of the generated proof-of-work; null when it's a pending block.
    • sha3Uncles (string; data, 32 bytes): SHA3 of the uncles data in the block.
    • logsBloom (string; data, 256 bytes): the bloom filter for the logs of the block. null when its pending block.