polkadot-rest-api

Use when fetching or decoding chain data (blocks, extrinsics, events, storage, runtime APIs) and tempted to make manual RPC calls (legacy_rpc, rpc_params!, chain_getBlock, state_call), or when writing code that branches on metadata versions

Use when decoding SCALE bytes, defining value types for dynamic storage queries, or choosing between parity_scale_codec::Decode and scale_decode::DecodeAsType — including when decoded values look subtly wrong without any error

Use when extrinsics unexpectedly report is_signed() == false or a missing signature, or when handling V5 "General" extrinsics/transactions