> ## Documentation Index
> Fetch the complete documentation index at: https://docs.etherscan.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Common Use Cases

> Whether you're building a wallet, AI agent, analytics platform, or enterprise finance tool, Etherscan API provides the onchain data needed to power your application.

Explore step-by-step guides for common development workflows used by thousands of teams.

| Build                        | What the Etherscan API helps you do                                                                 |
| ---------------------------- | --------------------------------------------------------------------------------------------------- |
| **Wallets & Portfolio Apps** | Retrieve balances, transaction history, token holdings, NFT assets, and address labels.             |
| **Analytics & Research**     | Analyze onchain activity, protocol usage, token holders, events, and historical trends.             |
| **Security & Compliance**    | Screen addresses with labels and reputation, monitor transactions, and assess wallet risk.          |
| **Finance & Accounting**     | Export complete transaction records, historical balances, and transfer activity for reconciliation. |
| **DeFi & Onchain Apps**      | Index tokens, contracts, events, and onchain activity for DeFi and Web3 applications.               |
| **AI & Automation**          | Power AI agents, MCP servers, bots, and automation workflows with onchain data and metadata.        |

Explore guides for common development workflows:

<Columns cols={2}>
  <Card title="Wallet and Portfolio" icon="wallet" href="/resources/wallet-and-portfolio" horizontal>
    Build wallet experiences with balances, transactions, NFTs, and readable names.
  </Card>

  <Card title="Tax and Accounting" icon="file-invoice-dollar" href="/resources/tax-and-accounting" horizontal>
    Generate complete, reconcilable transaction records for tax reporting, accounting, and audits.
  </Card>

  <Card title="Security and Compliance" icon="shield-halved" href="/resources/security-and-compliance" horizontal>
    Screen addresses, monitor transactions, and detect phishing, hacks, and sanctions.
  </Card>

  <Card title="Onchain Analytics and Research" icon="chart-line" href="/resources/analytics-and-research" horizontal>
    Analyze blockchain activity with entity attribution, holders, logs, and daily stats.
  </Card>
</Columns>

<Tip>
  Every guide uses a single API key across all 60+ [supported chains](/supported-chains). Many also combine core API endpoints with [Etherscan Metadata](/metadata/introduction), the identity layer that returns the same names, labels, and reputation shown on Etherscan. New to the API? Start with [Make your first call](/make-your-first-call).
</Tip>