Polygon RPC endpoint — node URL & WebSocket API

Last updated: November 1, 2026

Get API key Read the documentation

Network details

Need the values in a wallet or framework format? The Polygon chain config generates them for MetaMask, viem, ethers, Hardhat and Foundry.

curl https://triport.io/public/polygon \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"eth_chainId","params":[]}'
# -> {"jsonrpc":"2.0","id":1,"result":"0x89"}

polygon-rpc.com and rpc-amoy stopped answering

On 2026-11-01 https://polygon-rpc.com answered HTTP 401 "API key disabled, reason: tenant disabled", and rpc-amoy.polygon.technology did not answer. A wallet still pointing at the old URL fails when it asks for the chain ID, which is the "Could not fetch chain ID" message in MetaMask. Replace the URL (the keyless Polygon endpoint for a wallet, a key for production), then confirm that eth_chainId returns 0x89. Polygon's docs now list a third-party endpoint.

What works today

Reads cover the standard EVM surface — balances, code and storage, blocks and receipts, transactions, logs, gas and fee history, plus eth_getProof and the filter methods. All of them draw on one read budget: Polygon has no separate heavy category, so eth_getLogs is paced like any other read.

WebSocket subscriptions, by plan

wss://triport.io/ws/poly speaks the standard eth_subscribe / eth_unsubscribe wire shape, the same as Ethereum. Which subscription types a key may open depends on its plan: newPendingTransactions from the Free trial, logs from Basic, newHeads and syncing from Pro. Polygon-specific bor_subscribe* methods are not served on this channel.

Transaction submission

Send signed, serialized transactions with eth_sendRawTransaction at https://triport.io/polygon (available on every plan). A returned hash means the request was routed; the receipt decides inclusion.

What this page does not sell

Anything that is not in the table above is not sold on this page — each method's page in the Polygon JSON-RPC reference documents it in full. We also publish no latency figures: the rate limits below are per-category RPS limits, not measured upstream capacity.

Terms on this page: Event log · Archive node · Finality.

Limits and plans

2× burst buffer, included. Finite request-rate limits show sustained RPS and short burst capacity. A full buffer at 20 RPS can absorb up to 40 requests at once and refills at 20 requests per second. There is no quota on the number of bursts and no extra charge for them. Size ongoing traffic to sustained RPS. Categories with no per-category cap have no numeric burst ceiling. How burst capacity works.

Sustained rates carry a 2x burst. Plans: Basic $20, Pro $249, Business $499, Enterprise from $999 per month — a flat monthly price, no credits or overage: only the per-category RPS limits above. Free is a 7-day trial with a single key in the EU region, not a permanent plan. See Polygon limits.

Every plan with its limits on every network, and what a plan costs at its cap: RPC pricing.

Quickstart

# curl
curl https://triport.io/polygon \
  -H "x-token: $TRIPORT_API_KEY" -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"eth_chainId","params":[]}'
# -> {"jsonrpc":"2.0","id":1,"result":"0x89"}

# viem
import { createPublicClient, http } from "viem";
import { polygon } from "viem/chains";
const client = createPublicClient({
  chain: polygon,
  transport: http("https://triport.io/r/<API_KEY>/polygon"),
});

# Hardhat / Foundry
networks: { polygon: { url: "https://triport.io/r/<API_KEY>/polygon", chainId: 137 } }
rpc_endpoints = { polygon = "https://triport.io/r/<API_KEY>/polygon" }

Polygon read methods

• eth_blockNumber
• eth_call
• eth_chainId
• eth_estimateGas
• eth_feeHistory
• eth_gasPrice
• eth_getBalance
• eth_getBlockByHash
• eth_getBlockByNumber
• eth_getBlockReceipts
• eth_getBlockTransactionCountByHash
• eth_getBlockTransactionCountByNumber
• eth_getCode
• eth_getFilterChanges
• eth_getLogs
• eth_getProof
• eth_getStorageAt
• eth_getTransactionByBlockHashAndIndex
• eth_getTransactionByBlockNumberAndIndex
• eth_getTransactionByHash
• eth_getTransactionCount
• eth_getTransactionReceipt
• eth_maxPriorityFeePerGas
• eth_newBlockFilter
• eth_protocolVersion
• eth_syncing
• eth_uninstallFilter
• net_listening
• net_peerCount
• net_version
• web3_clientVersion
• web3_sha3