Monad RPC endpoints for DeFi and trading apps

Monad RPC is the Ethereum-compatible JSON-RPC interface applications use to read Monad blockchain data, call smart contracts, and submit signed transactions. Monad is a Layer 1 blockchain that uses parallel execution while preserving EVM bytecode compatibility. See the Monad API reference.

Create a free Chainstack account, create a project, and deploy a Monad Global Node on mainnet or testnet. Open Access and credentials to copy your HTTPS and WebSocket URLs. The Developer plan includes 3 million request units per month, up to 25 requests per second, and one node. No credit card is required.

Your authenticated HTTPS URLs follow https://monad-mainnet.core.chainstack.com/YOUR_ENDPOINT_ID và https://monad-testnet.core.chainstack.com/YOUR_ENDPOINT_ID. Use the complete endpoint from your node’s Quyền truy cập và thông tin đăng nhập. Your endpoint ID authenticates requests, so keep it out of public repositories. Follow the Monad endpoint setup guide.

Monad mainnet uses chain ID 143 (0x8f), and Monad testnet uses 10143 (0x279f). Both networks use MON for gas, but testnet MON cannot pay mainnet fees. Query eth_chainId to verify your endpoint’s network before signing transactions. Check the Monad network information.

Yes. Monad supports EVM bytecode and standard Ethereum JSON-RPC methods, so you can use Solidity contracts and familiar tools such as MetaMask, ethers.js, viem, web3.py, Hardhat, and Foundry. Configure the correct RPC URL, chain ID, and MON gas balance. Check Monad-specific behavior when porting an application. See Monad tooling and differences from Ethereum.

Gọi eth_getBalance with a wallet address and the latest block tag. The result is a hexadecimal amount in wei, with 10^18 wei per MON. This reads the native balance; ERC-20 token balances require a contract call such as balanceOf. Xem Monad eth_getBalance reference.

Yes. Chainstack Monad Global Nodes support standard block and log subscriptions, plus monadNewHeads for Monad-specific block lifecycle updates. That stream includes blockId và commitState; a proposed block is not yet finalized. Copy the WSS URL from Quyền truy cập và thông tin đăng nhập and add reconnection and backfilling logic. See Monad block subscriptions.

No. Historical blocks, transactions, receipts, and logs are different from historical state. Chainstack Monad nodes retain account balances and contract state for a rolling window of recent blocks, several days long. Older state queries can return Block requested not found. Do not assume Ethereum-style state history back to genesis. See Monad state limitations và Monad’s historical-data explanation.

On paid plans, Monad Global Nodes expose debug_* methods such as debug_traceTransaction và debug_traceBlockByNumber. Monad does not serve the trace_* namespace. Supported native tracers include callTracer và prestateTracer; 4byteTracer và noopTracer are rejected. See Monad debug API availability.

Start with the free Developer plan. Paid plans start at $40 per month with annual billing. Standard full requests consume 1 request unit, while archive and debug or trace requests consume 2. Unlimited Node offers flat-fee capacity from the Growth plan; Dedicated Nodes start from Pro, with infrastructure billed separately. See plan features and request-unit rules.

Use a Global Node for geo-balanced RPC without managing node infrastructure. Choose a Dedicated Node when you need isolated compute and storage for sustained production workloads. Unlimited Node is an additional option for predictable billing within a selected RPS tier. Check current Monad node pricing for available networks and configurations.

Sử dụng Chainstack Monad faucet to fund an eligible test wallet. The faucet currently tops balances up to 0.5 testnet MON, with a claim available every 24 hours. Testnet MON has no monetary value and cannot pay mainnet fees. Use chain ID 10143 for Monad testnet.