Launch chains from GET /requests/capabilities, read 2026-10-08T13:43:37.718Z. Default chain id 11155111. Job payments use chain 1. Payment method exact on x402 v2, transfer permit2, quote approval EIP-712.

• Sepolia · chain 11155111 · testnet · kinds univ4_hook, evm_project, custom_token, evm_contracts
• Ethereum mainnet · chain 1 · not marked testnet · kinds univ4_hook, evm_project, custom_token, evm_contracts
• Robinhood Chain · chain 4663 · not marked testnet · kinds univ4_hook, evm_project, custom_token, evm_contracts

At least one open launch chain is marked testnet by the capabilities payload. Treat deployed outputs as not production-ready.