Client

pythsol build writes {name}_client.py. The module imports solders only. Each instruction is name(program_id, *accounts, *args) -> Instruction. An init signer is writable because the instruction pays. System, Token, Token-2022, and the ATA program are appended only when that instruction needs them.

pythsol client program.json reads metadata.pythsol.cpi for the same append rules. An IDL written before that metadata key appends nothing.

pythsol cpi adds two comments: the builders are for an off-chain caller. PythSol does not lower a generic on-chain invoke of another program.