Supported ChainPolygon

Polygon API

Access Polygon via the Spectrum unified API. Polygon is a popular EVM-compatible sidechain with low fees and fast transactions, making it ideal for high-volume applications and DeFi protocols.

Properties

Property	Value
Slug	`polygon`
Type	EVM
Native Token	MATIC
Chain ID	`137`

Available Methods

Method	Description
getBlockHeight	Latest Polygon block number
getBalance	MATIC balance for a wallet
getTokenBalance	ERC-20 token balance
getTokenMetadata	ERC-20 token info
getTokenAllowance	Token spending allowance
getPortfolio	Full portfolio with USD values
getNftCollection	NFT holdings for a wallet
getBlockTransactions	Transactions in a block
estimateGas	Gas estimation for a transaction
traceTransaction	Internal call trace
getHistoricalBalance	Balance at a historical block
getCode	Contract bytecode check
simulateCall	Simulate a contract call
rpcProxy	Raw JSON-RPC passthrough
getChainHealth	Polygon RPC health check

Quick Start

Get the latest Polygon block height:

curl -X POST https://your-endpoint.simplystaking.xyz/v1 \
  -H "Content-Type: application/json" \
  -H "X-API-Key: YOUR_KEY" \

{
  "jsonrpc": "2.0",
  "method": "getBlockHeight",
  "params": {
    "chain": "polygon"
  },
  "id": 1
}

Get Balance

Retrieve the MATIC balance for a wallet address:

curl -X POST https://your-endpoint.simplystaking.xyz/v1 \
  -H "Content-Type: application/json" \
  -H "X-API-Key: YOUR_KEY" \

{
  "jsonrpc": "2.0",
  "method": "getBalance",
  "params": {
    "chain": "polygon",
    "address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
  },
  "id": 1
}

Get Gas

Compare current gas prices across chains:

curl -X POST https://your-endpoint.simplystaking.xyz/v1 \
  -H "Content-Type: application/json" \
  -H "X-API-Key: YOUR_KEY" \

{
  "jsonrpc": "2.0",
  "method": "compareGas",
  "params": {},
  "id": 1
}

SDK


import { Spectrum } from '@spectrum-nodes/sdk';
 
const spectrum = new Spectrum({ api: 'https://your-endpoint.simplystaking.xyz/YOUR_API_KEY/' });
 
// Get latest block height
const block = await spectrum.core.getBlockHeight('polygon');
console.log(block.height);
 
// Get MATIC balance
const balance = await spectrum.tokens.getBalance('polygon', '0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045');
console.log(balance.balance);

DeFi

Polygon is supported by the following DeFi protocols on Spectrum:

Aave V3 — lending and borrowing markets
Beefy — yield optimizer vaults


// Get Aave V3 lending yields on Polygon
const yields = await spectrum.yields.getLending({
  chain: 'polygon',
  protocol: 'aave-v3'
});
 
// Get Beefy vault yields on Polygon
const vaults = await spectrum.yields.getLending({
  chain: 'polygon',
  protocol: 'beefy'
});