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

# Advanced API Overview

> Understand the capabilities and structure of the W3API Advanced API.

![Advanced API](/_fern-img/cf23b2903bcff7e09c635c9d391115f97c540e0beed9317183f93e267df47d70.webp)

**Advanced API** provides indexed and structured JSON-RPC endpoints for common Web3 data scenarios across multiple chains. It enables applications, dashboards, wallets, and analytics tools to retrieve aggregated blockchain data through simplified API requests. Available via JavaScript and Python SDKs, and React Hooks.

#### [Chains list](./chains-list)

Supported blockchains and their available access options.

#### [Pricing](./pricing)

How API usage, requests, and platform costs are priced.

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## Method Groups

Advanced API methods are organized by use case. Start here to choose the right method group, then open the corresponding API overview for the full method descriptions.

* [**NFT API**](/advanced-api/nft-api/overview): retrieve NFT ownership, collection membership, holder data, and token metadata across supported chains.
* [**Query API**](/advanced-api/query-api/overview): query indexed blocks, logs, wallet interactions, and transaction details without maintaining an indexer.
* [**Token API**](/advanced-api/token-api/overview): read account balances, token prices, currencies, token holders, and holder counts through normalized responses.

> Understand the capabilities and structure of the W3API Advanced API.