Package Information
Documentation
n8n-nodes-cronos
[Velocity BPA Licensing Notice]
This n8n node is licensed under the Business Source License 1.1 (BSL 1.1).
Use of this node by for-profit organizations in production environments requires a commercial license from Velocity BPA.
For licensing information, visit https://velobpa.com/licensing or contact licensing@velobpa.com.
A comprehensive n8n community node for interacting with the Cronos blockchain. This node enables workflow automation for blockchain operations including account management, transactions, smart contracts, tokens, NFTs, DeFi protocols, and more.
Features
Resources & Operations
Accounts
- Get native CRO balance
- Get ERC-20 token balances
- Get NFT holdings (ERC-721/ERC-1155)
- Get transaction history
- Get token transfer history
Transactions
- Get transaction details
- Get transaction receipt
- Send transactions
- Estimate gas
- Get transaction status
Blocks
- Get block by number or hash
- Get latest block
- Get block transactions
- Find block by timestamp
Smart Contracts
- Get contract ABI (verified contracts)
- Read contract state
- Write to contracts
- Get contract source code
- Query contract events
- Deploy contracts
Tokens (ERC-20)
- Get token information
- Get token holders
- Get token transfers
- Get token price
- Get top tokens
NFTs (ERC-721/ERC-1155)
- Get NFT metadata
- Get NFT transfers
- Get collection information
- Get NFT owners
DeFi
- Get protocol TVL
- Get pool information
- Get DEX statistics
- Get yield farm data
Network
- Get network status
- Get gas prices
- Get validators
- Get chain statistics
Events
- Get logs with filters
- Subscribe to events
- Filter and decode events
Utility
- Convert units (Wei/Gwei/CRO)
- Encode function calls
- Decode data
- Check API health
Triggers
- New Block - Trigger on new blocks
- Transaction To Address - Trigger on incoming transactions
- Token Transfer - Trigger on ERC-20 transfers
- Contract Event - Trigger on smart contract events
- Large Transaction - Trigger on transactions above threshold
Installation
Community Nodes (Recommended)
- Open your n8n instance
- Go to Settings > Community Nodes
- Select Install
- Enter
n8n-nodes-cronos - Accept the risks and install
Manual Installation
# Navigate to your n8n installation directory
cd ~/.n8n
# Install the node
pnpm install n8n-nodes-cronos
# Restart n8n
Configuration
Credentials Setup
- Add new credentials: Cronos API
- Configure:
- Network: Select Mainnet or Testnet
- RPC Endpoint (optional): Custom RPC URL
- Private Key (optional): For signing transactions
- Cronos Scan API Key (optional): For enhanced rate limits
Network Information
| Network | Chain ID | RPC Endpoint | Explorer |
|---|---|---|---|
| Mainnet | 25 | https://evm.cronos.org | https://cronoscan.com |
| Testnet | 338 | https://evm-t3.cronos.org | https://testnet.cronoscan.com |
Usage Examples
Get Account Balance
// Configure Cronos node
Resource: Accounts
Operation: Get Balance
Address: 0x...your-address
Read Smart Contract
// Configure Cronos node
Resource: Smart Contracts
Operation: Read Contract
Contract Address: 0x...token-address
Function Name: balanceOf
Parameters: ["0x...holder-address"]
Monitor Token Transfers
// Configure Cronos Trigger node
Event: Token Transfer
Token Address: 0x...token-contract
To Address: 0x...your-address
Known Contracts
The node includes pre-configured support for popular Cronos contracts:
| Token | Symbol | Address |
|---|---|---|
| Wrapped CRO | WCRO | 0x5C7F8A570d578ED84E63fdFA7b1eE72dEae1AE23 |
| USDC | USDC | 0xc21223249CA28397B4B6541dfFaEcC539BfF0c59 |
| USDT | USDT | 0x66e428c3f67a68878562e79A0234c1F83c208770 |
| DAI | DAI | 0xF2001B145b43032AAF5Ee2884e456CCd805F677D |
| WETH | WETH | 0xe44Fd7fCb2b1581822D0c862B68222998a0c299a |
| WBTC | WBTC | 0x062E66477Faf219F25D27dCED647BF57C3107d52 |
DeFi Protocols:
- VVS Finance Router: 0x145863Eb42Cf62847A6Ca784e6416C1682b1b2Ae
- VVS Finance Factory: 0x3B44B2a187a7b3824131F8db5a74194D0a42Fc15
Development
Prerequisites
- Node.js 18.10+
- pnpm 9.1+
Setup
# Clone the repository
git clone https://github.com/velobpa/n8n-nodes-cronos.git
cd n8n-nodes-cronos
# Install dependencies
pnpm install
# Build
pnpm build
# Run tests
pnpm test
# Lint
pnpm lint
Local Testing
# Link for local development
cd n8n-nodes-cronos
pnpm link --global
# In your n8n installation
cd ~/.n8n
pnpm link --global n8n-nodes-cronos
# Restart n8n
API Rate Limits
- Cronos RPC: No strict limits, but be reasonable
- Cronos Scan API:
- Without API key: 5 requests/second
- With API key: Higher limits (get key at https://cronoscan.com/apis)
Troubleshooting
Common Issues
"Invalid JSON RPC response"
- Check network connectivity
- Verify RPC endpoint URL
- Try alternative RPC endpoint
"Execution reverted"
- Contract function requirements not met
- Insufficient gas
- Invalid parameters
"Rate limit exceeded"
- Add Cronos Scan API key
- Reduce request frequency
- Implement delays between calls
Author
Velocity BPA
- Website: velobpa.com
- GitHub: Velocity-BPA
Licensing
This n8n community node is licensed under the Business Source License 1.1.
Free Use
Permitted for personal, educational, research, and internal business use.
Commercial Use
Use of this node within any SaaS, PaaS, hosted platform, managed service,
or paid automation offering requires a commercial license.
For licensing inquiries:
licensing@velobpa.com
See LICENSE, COMMERCIAL_LICENSE.md, and LICENSING_FAQ.md for details.
Support
- Issues: GitHub Issues
- Documentation: Cronos Docs
- n8n Community: n8n Community Forum
Contributing
- Fork the repository
- Create your feature branch (
git checkout -b feature/amazing-feature) - Commit your changes (
git commit -m 'Add amazing feature') - Push to the branch (
git push origin feature/amazing-feature) - Open a Pull Request
Acknowledgments
- Cronos for the EVM-compatible blockchain
- n8n for the workflow automation platform
- Crypto.com for the Cronos ecosystem
Changelog
1.0.0
- Initial release
- 10 resources with 50+ operations
- 5 trigger event types
- Full Cronos mainnet and testnet support
Built with ❤️ by Velocity BPA