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pages/dev-ecosystem-providers/indexers/goldrush.mdx

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+import {ImageWithCaption} from '../../../components';
+
+import imgWalletUiComponent from "../../../public/assets/ecosystem/resources/goldrush/wallet_ui_component.png";
+
+# GoldRush - powered by Covalent
+
+[GoldRush](https://goldrush.dev/?utm_source=sei&utm_medium=partner-docs) is a set foundational multichain data APIs and toolkits for easy web3 development across [100+ supported blockchains](https://goldrush.dev/docs/networks/?utm_source=sei&utm_medium=partner-docs), including Sei mainnet (EVM only). GoldRush offers structured onchain data, including token balances, transactions and event logs through powerful APIs, SDKs and UI Kits for building dapps.
+
+
+> [Sign up to start building on Sei](https://goldrush.dev/platform/?utm_source=sei&utm_medium=partner-docs)
+
+## APIs
+
+The GoldRush APIs enable developers to quickly and easily access structured onchain data. This means consistent response schemas that are blockchain agnostic. Available APIs and corresponding use cases include:
+
+### Wallet API
+
+- **Features:** All token balances (ERC20, 721, 1155, native), token transfers and prices (spot and 
+historical) for a wallet.
+- **Use cases:** [Wallets, portfolio trackers](https://goldrush-wallet-portfolio-ui.vercel.app/?utm_source=sei&utm_medium=partner-docs), token gating, airdrop snapshots.
+
+### Transactions API
+
+- **Features:** All historical transactions with human-readable log events. Includes gas usage/spend
+summaries.
+- **Use cases:** [Accounting and tax tools](https://bit.ly/crypto-tax-tool), branded in-app [transaction receipts](https://goldrush-dfk-tx-receipt-ui.vercel.app/tx/defi-kingdoms-mainnet/0x4e5c0af28b2cea27d06677fae1f573572e0ff863c43ae42d2959ca67b90c4390/?utm_source=sei&utm_medium=partner-docs).
+
+### Cross-Chain Activity API
+
+- **Features:** Single API call to fetch a list of active chains and the latest transaction date 
+on each for an address.
+- **Use cases:** [App onboarding](https://goldrush-wallet-portfolio-ui.vercel.app/activity/0x6d68A318D0632f7B9Ce9d6757Dea0e9dE19D7CCA/?utm_source=sei&utm_medium=partner-docs).
+
+### Security API
+
+- **Features:** NFT and ERC20 token allowances, including value-at-risk.
+- **Use cases:** [Revoke features](https://goldrush-revokehub.vercel.app/?utm_source=sei&utm_medium=partner-docs) in wallets, security applications.
+
+### Blockchain API
+
+- **Features:** Block details, log events by contract address or topic hash, gas prices, token prices and holders.
+- **Use cases:** [Custom block explorers](https://goldrush-block-explorer-ui.vercel.app/?utm_source=sei&utm_medium=partner-docs).
+
+## Developer Tools
+
+There are 4 primary developer tools for using the APIs:
+
+1. [GoldRush APIs](https://goldrush.dev/docs/api) - enteprise-grade REST APIs to use with any programming language. Switch blockchains with one path parameter.
+
+    ```sh
+    curl -X GET https://api.covalenthq.com/v1/sei-mainnet/address/0x6d68A318D0632f7B9Ce9d6757Dea0e9dE19D7CCA/balances_v2/ \
+        -H 'Content-Type: application/json' \
+        -u YOUR_API_KEY:
+    ```
+
+2. [GoldRush SDKs](https://goldrush.mintlify.app/docs/goldrush-sdks?utm_source=sei&utm_medium=partner-docs) - official client libraries including TypeScript and Python. 
+    ```sh
+    npm install @covalenthq/client-sdk
+    ```
+
+
+    ```ts
+    import { GoldRushClient } from "@covalenthq/client-sdk";
+
+    (async () => {
+    try {
+        const client = new GoldRushClient("YOUR_API_KEY");
+        const transactions = client.TransactionService.getAllTransactionsForAddress("sei-mainnet", "0x6d68A318D0632f7B9Ce9d6757Dea0e9dE19D7CCA");
+
+        for await (const tx of transactions) {
+        console.log("tx", tx);
+        }
+    } catch (error) {
+        console.log(error.message);
+    }
+    })();
+    ```
+
+3. [GoldRush UI Kit](https://github.com/covalenthq/goldrush-kit/?utm_source=sei&utm_medium=partner-docs) - beautifully designed React components for your dApp frontend.
+
+<ImageWithCaption
+  img={imgWalletUiComponent}
+  alt="GoldRush UI Kit Wallet Component"
+  caption="Example of a Wallet Component using the GoldRush UI Kit"
+/>
+
+4. [GoldRush Decoder](https://github.com/covalenthq/goldrush-decoder/?utm_source=sei&utm_medium=partner-docs) - decode any raw event logs into human-readable structured data.
+
+
+## Get started
+
+- [API Key](https://goldrush.dev/platform/auth/register/?utm_source=sei&utm_medium=partner-docs) - sign up for free
+- [Docs](https://goldrush.dev/docs/?utm_source=sei&utm_medium=partner-docs) - comprehensive knowledge base for all things GoldRush including a quickstart
+- [Sei Network Details](https://goldrush.dev/chains/sei/?utm_source=sei&utm_medium=partner-docs) - setup details and supported APIs for Sei
+- [Guides](https://goldrush.dev/guides/?utm_source=sei&utm_medium=partner-docs) - learn how to build for various use cases and expand your onchain knowledge