Flash a pre-built ELF you compiled locally (see AGENTS.md hello/). Pass the binary as elf_base64, or elf_url on https. Do not pass a filesystem path. Requires a Pay With Prompt voucher (merchant cloudhil, 10 credits = 1 flash). Cloudhil verifies it server-side before programming. Returns result.mailbox (NNOK 0x4E4E4F4B) and result.uart. nucleo-n6 and lpc55569-evk require .elf. Oneshot ≤20s then erase. Needs a Cloudhil account (Connect / OAuth).
Connector
Destructive
No auth