Is there a gRPC API for Robinhood Chain?
No provider on Robinhood Chain currently offers gRPC. Alchemy, the provider Robinhood recommends, explicitly lists gRPC as unsupported on this chain in its own documentation.
This is an unusual gap. On a chain producing blocks every 100 milliseconds and built for trading, a binary protobuf stream with a schema contract, HTTP/2 multiplexing and flow control is the natural transport — Solana's ecosystem has treated gRPC streaming as table stakes for years.
The practical consequences of its absence are parse cost on every message, no schema contract so field additions break clients, and no backpressure — a slow consumer either buffers without bound or drops data silently.
RobinhoodRPC ships gRPC and gRPC-Web across four services: chain streams, equities streams, the consolidated tape, and portfolio queries. Streams are resumable by cursor, unify backfill and live, and carry explicit deduplication keys.