> For the complete documentation index, see [llms.txt](https://opengpu-network.gitbook.io/opengpu-network/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://opengpu-network.gitbook.io/opengpu-network/blockchain-reference/api-methods.md).

# API Methods

The OpenGPU API provides JSON-RPC 2.0 interface methods for blockchain interaction.

## Block Information

* **eth\_blockNumber**: Retrieves the most recent block number
* **eth\_getBlockByHash**: Returns block data by hash identifier
* **eth\_getBlockByNumber**: Returns block data by block number
* **eth\_getBlockTransactionCountByHash**: Gets transaction count for a block via hash
* **eth\_getBlockTransactionCountByNumber**: Gets transaction count for a block via number

## Transaction Methods

* **eth\_getTransactionByHash**: Retrieves transaction details by hash
* **eth\_getTransactionByBlockHashAndIndex**: Gets transaction by block hash and position
* **eth\_getTransactionByBlockNumberAndIndex**: Gets transaction by block number and position
* **eth\_getTransactionCount**: Returns account transaction count
* **eth\_getTransactionReceipt**: Retrieves transaction receipt details
* **eth\_sendRawTransaction**: Submits signed transaction to network

## Account & Balance

* **eth\_getBalance**: Returns account balance in wei
* **eth\_getCode**: Retrieves contract bytecode at address

## Storage & State

* **eth\_getStorageAt**: Returns storage value at address and position
* **eth\_getProof**: Generates Merkle proof for account state

## Execution

* **eth\_call**: Executes message call without transaction creation
* **eth\_estimateGas**: Calculates gas required for transaction

## Network Information

* **eth\_gasPrice**: Returns current gas price in wei
* **eth\_chainId**: Returns chain identifier
* **eth\_syncing**: Returns synchronization status or false
* **eth\_getLogs**: Retrieves contract event logs

## Utility

* **net\_version**: Returns network version
* **web3\_clientVersion**: Returns client implementation version
* **web3\_sha3**: Computes Keccak-256 hash

## Request/Response Format

All methods use standard JSON-RPC 2.0 structure with `jsonrpc`, `method`, `params`, and `id` fields. Responses include `jsonrpc`, `id`, and `result` or `error` fields.