json-rpc.md

JSON-RPC methods

Ethereum type JSON-RPC Methods

Pre-requisite Readings

• Ethereum JSON-RPC
• Geth JSON-RPC APIs

Below is a list of Ethereum type JSON-RPC Methods where users can curl via local node. While you can also surf to our swagger playgroundfor a better understanding.

JSON-RPC Methods

Web3

Method	Namespace	Implemented	Public
web3_clientVersion	Web3	✔	✔
web3_sha3	Web3	✔	✔

Getting Blocks

Method	Namespace	Implemented	Public
eth_getBalance	Eth	✔	✔
eth_getBlockByNumber	Eth	✔	✔
eth_getBlockByHash	Eth	✔	✔

Read data

Method	Namespace	Implemented	Public
eth_call	Eth	✔	✔
eth_getTransactionByHash	Eth	✔	✔
eth_getTransactionCount	Eth	✔	✔
eth_getTransactionReceipt	Eth	✔	✔
eth_getBlockTransactionCountByNumber	Eth	✔	✔
eth_getBlockTransactionCountByHash	Eth	✔	✔
eth_getTransactionbyBlockNumberAndIndex	Eth	✔	✔
eth_getTransactionByBlockHashAndIndex	Eth	✔	✔
eth_sign	Eth	✔
eth_coinbase	Eth	✔

Writing data

Method	Namespace	Implemented	Public
eth_sendTransaction	Eth	✔
eth_sendRawTransaction	Eth	✔	✔
eth_sendPrivateTransaction	Eth
eth_cancelPrivateTransaction	Eth

Account

Method	Namespace	Implemented	Public
eth_getBalance	Eth	✔	✔
eth_getStorageAt	Eth	✔	✔
eth_getCode	Eth	✔	✔
eth_accounts	Eth	✔
eth_getProof	Eth	✔

Event Logs

Method	Namespace	Implemented	Public
eth_getLogs	Eth	✔	✔
eth_getFilterChanges	Eth	✔
eth_getFilterLogs	Eth	✔
eth_newBlockFilter	Eth	✔
eth_newFilter	Eth	✔
eth_newPendingTransactionFilter	Eth	✔
eth_uninstallFilter	Eth	✔

Chain

Method	Namespace	Implemented	Public
eth_protocolVersion	Eth	✔	✔
eth_gasPrice	Eth	✔	✔
eth_estimateGas	Eth	✔	✔
eth_feeHistory	Eth	✔	✔
eth_maxPriorityFeePerGas	Eth	✔	✔
eth_chainId	Eth	✔	✔
eth_syncing	Eth	✔	✔
eth_blockNumber	Eth	✔	✔
net_listening	Net	✔	✔
net_version	Net	✔	✔
net_peerCount	Net	✔	✔

Websocket

Method	Namespace	Implemented	Public
eth_subscribe	Websocket	✔
eth_unsubscribe	Websocket	✔

{% hint style="info" %} Tip
Block Number can be entered as a Hex string, "earliest", "latest" or "pending". {% endhint %}

{% hint style="info" %} When using batch requests, we currently only allow 3 objects for Mainnet and 5 objects for Testnet {% endhint %}

JSON-RPC namespaces

Pre-requisite Readings

• Geth JSON-RPC Namespaces

Ethereum Namespaces

Namespace	Description	Supported	Enabled by Default
eth	Cronos provides several extensions to the standard eth JSON-RPC namespace.	✔	✔
web3	The web3 API provides utility functions for the web3 client.	✔	✔
net	The net API provides access to network information of the node	✔	✔
clique	The clique API provides access to the state of the clique consensus engine. You can use this API to manage signer votes and to check the health of a private network.	❌
debug	The debug API gives you access to several non-standard RPC methods, which will allow you to inspect, debug and set certain debugging flags during runtime.	✔
les	The les API allows you to manage LES server settings, including client parameters and payment settings for prioritized clients. It also provides functions to query checkpoint information in both server and client mode.	❌
miner	The miner API allows you to remote control the node’s mining operation and set various mining specific settings.	✔	❌
txpool	The txpool API gives you access to several non-standard RPC methods to inspect the contents of the transaction pool containing all the currently pending transactions as well as the ones queued for future processing.	✔	❌
admin	The admin API gives you access to several non-standard RPC methods, which will allow you to have a fine grained control over your nodeinstance, including but not limited to network peer and RPC endpoint management.	❌
personal	The personal API manages private keys in the key store.	✔	❌