What is a Crynux on Base Sepolia RPC?
An RPC endpoint connects wallets and applications to Crynux on Base Sepolia. Use the endpoints above for JSON-RPC requests, and keep alternatives available for regional endpoint failures or rate limits.
testnetChain ID 188962142 · CNX
Crynux on Base Sepolia
Public RPC endpoints and wallet configuration for Crynux on Base Sepolia.
Network endpoints
Add Crynux on Base Sepolia to MetaMask
Use “Add to wallet” to request the network configuration. Always verify chain ID 188962142, currency CNX, and the selected RPC before approving.
Public RPC safety
Public endpoints are third-party infrastructure. They may log requests, enforce limits, or become unavailable. Never place private keys, seed phrases, or secrets in an RPC request.
Common RPC errors
Rate limits, browser CORS rules, network mismatch, and temporary provider failures are common. Try another listed endpoint and verify the returned chain ID.
Crynux on Base Sepolia RPC FAQ
What is the RPC URL for Crynux on Base Sepolia?+
https://json-rpc.base-sepolia.crynux.io is the recommended endpoint in this directory. Multiple alternatives are listed above in case an endpoint is unavailable from your region.
What is the Crynux on Base Sepolia chain ID?+
Crynux on Base Sepolia uses chain ID 188962142 (0xb43555e in hexadecimal).
How do I add Crynux on Base Sepolia to my wallet?+
Use the Add to wallet button above. Your wallet will ask you to review and approve the network details.
Are public RPC endpoints safe?+
Treat public RPCs as infrastructure operated by third parties. They can observe requests, rate-limit traffic, or be unavailable. Never send private keys or seed phrases to an RPC.
Found an issue?
Report a broken RPC →Help keep network data current through a community contribution.