Networks
Supported Networks
RelAI x402 is live across multiple chains — with a unified payment layer and consistent developer experience.
💡
You don't need to choose a chain upfront.
RelAI lets you start on one network and expand to others without changing your API.
You don't need to handle network differences. The protocol abstracts execution, settlement, and gas.
Overview
RelAI currently supports:
SolanaSPL tokens
BaseEVM
AvalancheEVM
PolygonEVM
EthereumEVM
SKALEGasless EVM
All payments are executed in USDC (or compatible stable tokens depending on network).
Why multi-chain matters
Different use cases require different tradeoffs. RelAI routes payments across chains without changing your integration.
Solanaultra-low latency, high throughput
Base / EVM chainsecosystem compatibility
SKALEzero gas execution
Ethereummaximum security
Networks
Solana
Standard: SPL Token Transfer
Settlement: ~400ms
Fees: Near-zero
Best for: High-frequency agent payments
Base
Standard: EIP-3009 (transferWithAuthorization)
Settlement: ~2–5 seconds
Fees: Sponsored via facilitator
Best for: Production apps, EVM-native stacks
Avalanche
Standard: EIP-3009
Settlement: Fast finality
Fees: Low
Best for: Scalable agent systems
Polygon
Standard: EIP-3009
Settlement: Fast
Fees: Low-cost execution
Best for: Consumer-scale apps
Ethereum
Standard: EIP-3009
Settlement: ~12 seconds
Fees: Standard gas
Best for: High-value payments
SKALE
Standard: EIP-3009
Settlement: ~1 second
Fees: 0 (fully sponsored)
Best for: Frictionless UX, onboarding users without wallets
How it works across chains
RelAI normalizes all flows — same integration, any chain.
01Client requests resource
02API returns HTTP 402
03Client signs payment (chain-specific)
04RelAI facilitator executes settlement
05API response is delivered
Same flow. Any chain.
Choosing a network
You don't need to pick just one. Typical setup:
High-frequency usage
Solana
Default production
Base
Onboarding / gasless UX
SKALE
RelAI handles routing and settlement. You don't need to change your API code to add more chains.
Facilitator compatibility matrix
Each facilitator supports different networks and x402 versions.
| Facilitator | Solana | Avalanche | Telos | Base | Ethereum | SKALE Base | SKALE BITE | Polygon | SEI | PEAQ |
|---|---|---|---|---|---|---|---|---|---|---|
| PayAI | ✓ v1 v2 | — | — | ✓ v1 v2 | — | — | — | ✓ v1 | ✓ v1 | ✓ v1 |
| Dexter | ✓ v2 | — | — | ✓ v2 | — | — | — | — | — | — |
| RelAI | ✓ v2 | ✓ v2 | ✓ v2 | ✓ v2 | ✓ v2 | ✓ v2 | ✓ v2 | ✓ v2 | — | — |
| AutoIncentive | — | — | — | ✓ v2 | — | — | — | — | — | — |
| 0xGasless | — | ✓ v2 | — | — | — | — | — | — | — | — |
Notes
All payments are per-request (no subscriptions)
No native token required for users
Gas is abstracted away via facilitator
Cross-chain expansion is ongoing