> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.galleon8.com/node-api/standard-api/overview/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.galleon8.com/_mcp/server.

# Standard API Overview

> Understand chain-specific Node API methods for direct blockchain interaction.

**Standard API** is the main Node API method group for direct blockchain interaction through chain-native interfaces. Use it when your application needs raw blockchain data or standard node operations over HTTPS, including reading blocks, transactions, balances, logs, account data, gas data, cluster data, and submitting signed transactions where the selected chain supports them.

---

## What You Can Build

Standard API supports common chain-native operations used by production applications:

* **Read blockchain data**: query blocks, transactions, receipts, logs, account balances, account data, storage, contract code, slots, epochs, and cluster status.
* **Estimate and submit transactions**: estimate gas, fetch fee data, and submit signed transactions on chains where those operations are supported.
* **Integrate existing tooling**: connect wallets, SDKs, backend clients, and indexing workers that speak chain-native RPC, REST, or gRPC protocols.
* **Monitor application state**: read chain state on demand over HTTPS for dashboards, explorers, and automated services.

---

## Request Model

Standard API uses the selected chain's native request model over a chain-specific Node API endpoint. For Ethereum-compatible chains, requests commonly use JSON-RPC 2.0 over HTTPS:

```json
{
  "jsonrpc": "2.0",
  "method": "eth_blockNumber",
  "params": [],
  "id": 1
}
```

Responses follow the selected chain's standard response format. Successful JSON-RPC responses include a `result`; failed responses include an `error` object with details from the node or endpoint.

Method names, parameters, and response schemas can differ by chain, so use the API Reference for the target chain before implementing production requests.

---

## Methods

The Standard API references are chain-specific. Select the one you'd like to interact with to view its method details:

#### [Ethereum](/api-reference/node-api/ethereum/overview)

View Ethereum API reference.

#### [Solana](/api-reference/node-api/solana/overview)

View Solana API reference.

#### BNB Smart Chain

Coming soon...

#### Polygon PoS

Coming soon...

#### Base

Coming soon...

#### Arbitrum

Coming soon...

#### Bitcoin

Coming soon...

#### Optimism

Coming soon...

#### Avalanche

Coming soon...

#### TRON

Coming soon...

#### Monad

Coming soon...

#### Sui

Coming soon...

> Understand chain-specific Node API methods for direct blockchain interaction.