> ## Documentation Index > Fetch the complete documentation index at: https://goldrush.dev/docs/llms.txt > Use this file to discover all available pages before exploring further. # Polygon Onchain Data API > Get token balances and transactions for Polygon. 28 endpoints supported. Testnet supported. ## Overview Polygon PoS is the most battle-tested Ethereum scaling solution with 1.3B+ transactions, 130M wallets, and 2.7M monthly active users. The proven choice for production-grade applications. GoldRush offers the most comprehensive Polygon Data API suite for developers, analysts, and enterprises. Whether you're building a DeFi dashboard, a wallet, a trading bot, an AI agent or a compliance platform, our Polygon Data APIs provide fast, accurate, and developer-friendly access to the essential onchain data you need. ### Supported APIs Access structured historical blockchain data across 100+ chains using REST APIs. Get token balances, transaction histories, decoded event logs, NFT assets, token holders and more.

Use cases: Wallets, portfolio trackers, crypto accounting & tax tools, and DeFi dashboards. Low-latency EVM JSON-RPC with global failover and archive depth. Point your existing tooling at the GoldRush endpoint — no code changes required.

Use cases: dApps, wallets, indexers, bots, and trading infrastructure. ## Mainnet | Property | Value | | -------------------- | ---------------------------------------------- | | **Chain Name** | `matic-mainnet` | | **Chain ID** | `137` | | **Network Type** | Foundational Chain | | **Support Level** | foundational | | **Block Explorer** | [PolygonScan](https://polygonscan.com/) | | **Official Website** | [Polygon Website](https://polygon.technology/) | | **Native Gas Token** | MATIC | ## Testnet | Property | Value | | -------------------- | ------------------------------------------------------------------------------------------------------------ | | **Chain Name** | `polygon-amoy-testnet` | | **Chain ID** | `80002` | | **Purpose** | Development and testing network | | **Support Level** | foundational | | **Block Explorer** | [Amoy PolygonScan](https://amoy.polygonscan.com/) | | **Official Website** | [Polygon Amoy Testnet Website](https://polygon.technology/blog/introducing-the-amoy-testnet-for-polygon-pos) | | **Native Gas Token** | gwei | ## API Usage To use this blockchain network in GoldRush API calls, use: #### Chain Name * `matic-mainnet` (mainnet) * `polygon-amoy-testnet` (testnet) #### Example API Calls ```bash Chain Name (Mainnet) theme={null} curl -X GET "https://api.covalenthq.com/v1/matic-mainnet/address/0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045/balances_v2/?key=" ``` ```bash Chain Name (Polygon Amoy Testnet) theme={null} curl -X GET "https://api.covalenthq.com/v1/polygon-amoy-testnet/address/0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045/balances_v2/?key=" ``` ```bash theme={null} ``` #### SDK Usage ```typescript TypeScript SDK (Mainnet) theme={null} import { GoldRushClient } from "@covalenthq/client-sdk"; const client = new GoldRushClient(""); const resp = await client.BalanceService.getTokenBalancesForWalletAddress({ chainName: "matic-mainnet", walletAddress: "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045" }); ``` ```typescript TypeScript SDK (Polygon Amoy Testnet) theme={null} import { GoldRushClient } from "@covalenthq/client-sdk"; const client = new GoldRushClient(""); const resp = await client.BalanceService.getTokenBalancesForWalletAddress({ chainName: "polygon-amoy-testnet", walletAddress: "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045" }); ``` ## Foundational API Support This chain supports **28** GoldRush Foundational APIs: #### Wallet API * **[Get token holders as of any block height (v2) on Polygon](/docs/api-reference/foundational-api/balances/get-token-holders-as-of-any-block-height-v2/)** * **[Get historical token balances for address on Polygon](/docs/api-reference/foundational-api/balances/get-historical-token-balances-for-address/)** * **[Get token balances for address on Polygon](/docs/api-reference/foundational-api/balances/get-token-balances-for-address/)** * **[Get native token balance for address on Polygon](/docs/api-reference/foundational-api/balances/get-native-token-balance/)** * **[Get historical portfolio value over time on Polygon](/docs/api-reference/foundational-api/balances/get-historical-portfolio-value-over-time/)** * **[Get ERC20 token transfers for address on Polygon](/docs/api-reference/foundational-api/balances/get-erc20-token-transfers-for-address/)** #### NFT API * **[Get NFTs for address on Polygon](/docs/api-reference/foundational-api/nft/get-nfts-for-address/)** * **[Check ownership in NFT collection on Polygon](/docs/api-reference/foundational-api/nft/check-ownership-in-nft-collection/)** * **[Check ownership in NFT collection for specific token on Polygon](/docs/api-reference/foundational-api/nft/check-ownership-in-nft-collection-token/)** #### Pricing API * **[Get pool spot prices on Polygon](/docs/api-reference/foundational-api/utility/get-pool-spot-prices/)** * **[Get historical token prices on Polygon](/docs/api-reference/foundational-api/utility/get-historical-token-prices/)** #### Security API * **[Get token approvals for address on Polygon](/docs/api-reference/foundational-api/security/get-token-approvals-for-address/)** #### Transactions API * **[Get a transaction on Polygon](/docs/api-reference/foundational-api/transactions/get-a-transaction/)** `with-traces` * **[Get transaction summary for address on Polygon](/docs/api-reference/foundational-api/transactions/get-transaction-summary-for-address/)** * **[Get earliest transactions for address (v3) on Polygon](/docs/api-reference/foundational-api/transactions/get-earliest-transactions-for-address-v3/)** `with-traces` * **[Get recent transactions for address (v3) on Polygon](/docs/api-reference/foundational-api/transactions/get-recent-transactions-for-address-v3/)** `with-traces` * **[Get paginated transactions for address (v3) on Polygon](/docs/api-reference/foundational-api/transactions/get-paginated-transactions-for-address-v3/)** `with-traces` * **[Get bulk time bucket transactions for address (v3) on Polygon](/docs/api-reference/foundational-api/transactions/get-time-bucket-transactions-for-address-v3/)** * **[Get all transactions in a block (v3) on Polygon](/docs/api-reference/foundational-api/transactions/get-all-transactions-in-a-block/)** * **[Get all transactions in a block by page (v3) on Polygon](/docs/api-reference/foundational-api/transactions/get-all-transactions-in-a-block-by-page/)** #### Block Explorer API * **[Get a block on Polygon](/docs/api-reference/foundational-api/utility/get-a-block/)** * **[Get all chain statuses on Polygon](/docs/api-reference/foundational-api/utility/get-all-chain-statuses/)** * **[Get all chains on Polygon](/docs/api-reference/foundational-api/utility/get-all-chains/)** * **[Get block heights on Polygon](/docs/api-reference/foundational-api/utility/get-block-heights/)** * **[Get gas prices on Polygon](/docs/api-reference/foundational-api/utility/get-gas-prices/)** * **[Get log events by contract address on Polygon](/docs/api-reference/foundational-api/utility/get-log-events-by-contract-address/)** * **[Get log events by topic hash(es) on Polygon](/docs/api-reference/foundational-api/utility/get-log-events-by-topic-hash/)** * **[Get logs on Polygon](/docs/api-reference/foundational-api/utility/get-logs/)** ## Internal Transactions (`with-internal`) Polygon supports **internal transactions** (traces). The Transactions API endpoints marked `with-traces` above accept the `with-internal=true` query parameter, which includes internal transactions (the value transfers triggered by contract execution that are not recorded as standalone onchain transactions) in the response. Internal transactions are included in the response by passing `with-internal` and cost `0.05` credits/item. #### Example API Call ```bash Recent transactions with internal transactions theme={null} curl -X GET "https://api.covalenthq.com/v1/matic-mainnet/address/0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045/transactions_v3/?with-internal=true&key=" ``` ## JSON-RPC Polygon is available on the GoldRush JSON-RPC service. Point your existing EVM tooling (ethers.js, viem, web3.js, or raw HTTP) at the GoldRush endpoint — the standard `eth_*`, `net_*`, `web3_*`, `debug_*`, and `trace_*` methods are supported. #### Endpoint ``` https://rpc.goldrushdata.com/v1/matic-mainnet ``` #### Example JSON-RPC Calls ```bash eth_blockNumber theme={null} curl https://rpc.goldrushdata.com/v1/matic-mainnet \ -H "Authorization: Bearer " \ -H "Content-Type: application/json" \ -d '{"jsonrpc":"2.0","id":1,"method":"eth_blockNumber","params":[]}' ``` ```bash eth_getBalance theme={null} curl https://rpc.goldrushdata.com/v1/matic-mainnet \ -H "Authorization: Bearer " \ -H "Content-Type: application/json" \ -d '{"jsonrpc":"2.0","id":1,"method":"eth_getBalance","params":["0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045","latest"]}' ``` #### Sample Methods * **[eth\_blockNumber on Polygon](/docs/api-reference/json-rpc/polygon/eth-blocknumber)** * **[eth\_getBalance on Polygon](/docs/api-reference/json-rpc/polygon/eth-getbalance)** * **[eth\_call on Polygon](/docs/api-reference/json-rpc/polygon/eth-call)** * **[eth\_getLogs on Polygon](/docs/api-reference/json-rpc/polygon/eth-getlogs)** * **[eth\_getTransactionReceipt on Polygon](/docs/api-reference/json-rpc/polygon/eth-gettransactionreceipt)** See the [full method list and per-method examples for Polygon](/docs/api-reference/json-rpc/chains/polygon). ## Additional Resources * [GoldRush API Documentation](https://goldrush.dev/docs/) * [Supported Chains List](https://goldrush.dev/chains/) * [API Reference](https://goldrush.dev/docs/api-reference/)