Sandboxes
Live testnet (chain 40204), read-mostly, fail-closed. Public, no login required.
- GhostDAG blue-score visualizer
Watch blue/red blocks, selected vs merge edges, and finality on chain 40204.
- Gasless relay (EIP-2771)
Submit a meta-transaction the relayer sponsors, no gas, on us.
- x402 payment
See a 402 challenge, settle it on testnet, and unlock the resource.
- Inference gateway
Call the OpenAI-compatible gateway and watch tokens + usage.
- RPC method explorer
Run allowlisted eth_*/citrate_* reads and copy the cURL.