About SKALE
SKALE is a network of elastic blockchain networks. Each SKALE Chain is an independent EVM-compatible chain with its own validators.
Chain Types
SKALE Base (Credit Chain)
Uses Compute Credits - prepaid credits that can be purchased.
| Network | Chain ID | RPC |
|---|---|---|
| Testnet | 324705682 | https://base-sepolia-testnet.skalenodes.com/v1/jubilant-horrible-ancha |
| Mainnet | 1187947933 | https://skale-base.skalenodes.com/v1/base |
Zero Gas Fee Chains (sFUEL)
Uses sFUEL - valueless gas token. Users pay ~0, validators stake SKL to cover costs.
| Chain | Chain ID | RPC |
|---|---|---|
| Europa Hub | 2046399126 | https://mainnet.skalenodes.com/v1/elated-tan-skat |
| Calypso Hub | 1564830818 | https://mainnet.skalenodes.com/v1/honorable-steel-rasalhague |
| Nebula Hub | 1482601649 | https://mainnet.skalenodes.com/v1/green-giddy-denebola |
Gas Models
| Model | Description | User Pays | Chains |
|---|---|---|---|
| sFUEL | Valueless gas token | ~0 | Europa, Calypso, Nebula |
| Compute Credits | Prepaid credits | Credits | SKALE Base |
| Proof-of-Work | Solve PoW puzzle | ~0 | Optional |
| Gas Chain | Real token as gas | Token | Configurable |
Key Concepts
- sFUEL: Valueless gas token for EVM compatibility
- Compute Credits: Prepaid compute units on SKALE Base
- Validator Nodes: 3t+1 nodes secure each chain
- Message Proxy: Cross-chain messaging via IMA
Architecture
- Elastic: Chains can scale resources dynamically
- Independent: Each chain has its own validators
- EVM-Compatible: Works with standard Ethereum tooling
When to Use SKALE
- High-frequency transactions (zero/low fees)
- Gaming and NFT apps (no gas per transaction)
- AI agents with micropayments (x402)
- Privacy-sensitive apps (BITE Protocol)
- Building where fees would be a bottleneck
SKALE vs Other Chains
| Feature | SKALE | Ethereum L1 | Optimism/Arbitrum |
|---|---|---|---|
| Block time | ~1s | ~12s | ~2s |
| Gas fees | ~0 | High | Low |
| Independence | Full | N/A | Shared |
For deployment info, see deploy-to-skale skill. For privacy (BITE), see programmable-privacy skill. For AI agent payments (x402), see x402-on-skale skill.
Reference: Docs
Reference Files
For more details about SKALE Chains please check:
references/chains.md- Complete overview on the SKALE Chains detailsreferences/gas.md- Complete overview on SKALE Chains gas models, tokens and comparisions.