Our pricing is simple: 1 RU per full request, 2 RUs per archive. For which EVM methods are full vs archive, see Request units — EVM methods affected by block age.
See also interactive Robinhood Chain API call examples.
Robinhood Chain runs the Arbitrum Nitro client. The availability below is verified against Chainstack Robinhood Chain nodes. All standard Geth debug_* tracers — callTracer, flatCallTracer, prestateTracer, 4byteTracer, and the struct/opcode logger — are supported on debug_traceTransaction, debug_traceBlockByNumber, debug_traceBlockByHash, and debug_traceCall. The Parity-style arbtrace_* and trace_* namespaces are not exposed — use the debug_* tracers instead.
Last modified on July 18, 2026
