Read liquidity-pool state, follow token transfers, and send transactions on Cronos EVM with reliable, high-performance RPC infrastructure.
Connect to Cronos EVM Mainnet over HTTPS and WebSocket. Read contract state, subscribe to events, and submit signed transactions using familiar Ethereum libraries.
Build Cronos applications with archive state, contract debugging, and predictable RPC capacity.
Run Cronos indexers and application backends with unlimited requests within your selected RPS tier. Keep monthly RPC costs predictable as request volume grows.
Query historical contract state and backfill event logs for Cronos indexers, accounting, and DeFi analytics.
Inspect Cronos execution with debug_traceTransaction and debug_traceCall. Diagnose reverted calls without maintaining a debugging node.
Read liquidity-pool state, simulate contract calls, and submit signed swaps. Connect your application with ethers.js, viem, or web3.py.
Explore Cronos tooling
Collect contract events with eth_getLogs and subscribe to new logs over WebSocket. Track the assets and pools your application supports.
Explore Cronos methods
Read native CRO balances, query ERC-20 balances, and check transaction receipts. Keep gas estimates and transaction status close to the user flow.
Get endpoint
Use debug_traceTransaction and debug_traceCall to inspect execution. Cronos exposes debug APIs rather than the trace namespace.
Explore Cronos debug APIs
Use Ethereum development tools with Cronos EVM chain ID 25. Cronos EVM is a separate network from Cronos zkEVM and Cronos POS.
Explore Cronos toolingChoose Cronos mainnet or Sepolia and an available node configuration to estimate monthly infrastructure costs.
Choose an available Cronos network and node configuration to estimate monthly infrastructure costs.
Customer stories from teams using Chainstack across supported networks.
…the ecosystem is excited to welcome Chainstack to bring low friction, enterprise-grade node infrastructure to the Cronos developer community.Chainstack has been crucial in enhancing Brave Wallet’s multi-chain functionality and UX.The Unlimited Node flat-fee model gives us cost predictability, and the performance is rock-solidWe’ve gone from weekly incidents to zero incidents.Working with Chainstack helped us cut our infrastructure costs by over 70%, all while tackling intricate challenges in Web3 security.
Query pool contracts over HTTPS, collect trading events with eth_getLogs, and subscribe to new logs over WebSocket. Backfill historical data for the markets your application follows.
Get endpointRun Cronos EVM Mainnet or Testnet on infrastructure you control. Deploy cronosd with monitoring, automated updates, and self-healing operations through Chainstack Self-Hosted.
Read token-transfer events from the latest Cronos block with eth_getLogs.
AI-ready infrastructure
Refer and earn
Ethereum
Hyperliquid
Solana
Arbitrum
BNB Smart Chain
Base
Polygon
TRON
Sui
Robinhood
SOC 2 Type II
ISO 27001
99.99%+ uptime
Learn more
View installation guidehttps://cronos-mainnet.core.chainstack.com/YOUR_ENDPOINT_IDwss://cronos-mainnet.core.chainstack.com/YOUR_ENDPOINT_IDCreate a Cronos node. Copy your authenticated HTTPS URL from Access and credentials and replace YOUR_ENDPOINT_ID in the example.
curl --request POST \
--url https://cronos-mainnet.core.chainstack.com/YOUR_ENDPOINT_ID \
--header 'Content-Type: application/json' \
--data '{
"jsonrpc": "2.0",
"id": 1,
"method": "eth_getLogs",
"params": [
{
"fromBlock": "latest",
"toBlock": "latest",
"topics": [
"0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"
]
}
]
}'The result is an array of matching logs. Add the token or pool contract address and bounded block ranges when collecting historical activity.
Start with free Cronos RPC. Scale your application with paid plans, higher throughput, and dedicated infrastructure.
Includes:
All Developer features, plus:
Add-ons and Dedicated Node infrastructure are billed separately.
Exceptional support on every paid planSave over 50% on our elite Pay-as-you-go plan
Chat on Telegram (opens in a new tab)Explore Cronos RPC, application development, and infrastructure guides.
Explore managed RPC access and application development.
Read article
Follow a practical Solidity deployment walkthrough.
Read article
Learn the event-subscription pattern for EVM trading feeds.
Read article
Set access rules for production applications.
Read articleExplore open-source projects from our developer experience team. Follow practical guides, watch walkthroughs, and adapt the code for your application.
JavaScript · Smart contracts
Write a Solidity lottery contract, then deploy and verify it on Cronos Testnet with Hardhat. Follow the repository and guide for contract interaction and testing.
A Cronos RPC endpoint connects your application to Cronos EVM through Ethereum-compatible JSON-RPC. Use it to read balances and contract state, retrieve event logs, estimate gas, and send signed transactions. Cronos EVM is separate from Cronos POS and Cronos zkEVM. See the Cronos tooling guide.
Yes. Chainstack’s Developer plan includes 3 million request units per month, 25 requests per second, and one node, with no credit card required. Request-unit consumption depends on the method. Create a free account or compare plan features.
Mainnet: https://cronos-mainnet.core.chainstack.com/YOUR_ENDPOINT_ID.
Testnet: https://cronos-testnet.core.chainstack.com/YOUR_ENDPOINT_ID.
Replace YOUR_ENDPOINT_ID with the identifier from your node’s Access and credentials panel. Keep that identifier private and use the complete URL supplied for your deployed network. Get a Cronos endpoint.
Cronos Mainnet uses chain ID 25. Cronos Testnet uses chain ID 338. These are Cronos EVM networks, not Cronos POS or Cronos zkEVM. See the Cronos tooling guide for connection examples.
Yes. Use the WebSocket URL in your node’s Access and credentials panel with eth_subscribe to follow new blocks and contract logs. Use HTTPS and eth_getLogs for historical backfills, and reconnect and catch up after a dropped subscription. See the Cronos connection examples.
Paid Cronos Global Nodes expose debug_traceTransaction, debug_traceCall, debug_traceBlockByNumber, and debug_traceBlockByHash. Cronos does not serve the trace_* namespace. On Cronos Mainnet archive nodes, debug_traceBlockByNumber is limited to 10 requests per second on all plans. See Cronos debug API availability.
Yes. Cronos archive access is available on paid plans for historical contract-state reads. Event-log retrieval and historical state are different workloads: specify the block you need for state queries, and paginate log backfills. Available historical ranges depend on the node configuration and retained data. See supported networks and node modes.
Yes. Chainstack Self-Hosted supports Cronos Mainnet and Testnet using cronosd. Deploy on infrastructure you control and manage the node through the Chainstack Self-Hosted interface. Hosting resources remain your responsibility. See the installation guide and supported deployment catalog.
Connect your application to Chainstack’s Cronos HTTPS endpoint to read balances, call contracts, query event logs, and submit signed transactions. Use eth_call for contract reads, eth_getLogs for event queries, eth_getTransactionReceipt for receipt checks, and eth_sendRawTransaction to broadcast a signed transaction. Cronos Mainnet uses chain ID 25. Cronos Testnet uses chain ID 338.
A Chainstack Cronos Mainnet endpoint follows the format https://cronos-mainnet.core.chainstack.com/YOUR_ENDPOINT_ID. Replace YOUR_ENDPOINT_ID with your own authenticated node identifier. Use ethers.js, viem, or web3.py to build DeFi interfaces, trading systems, and wallet backends. WebSocket subscriptions can follow new blocks and contract logs; use bounded HTTPS log requests for historical backfills. See the Cronos tooling guide and RPC method reference for integration details.
