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 build-with-bite skill. For AI agent payments (x402), see x402-on-skale skill.

Reference: Docs