reSpeaker Clip firmware-dev skill (clip-dev)

clip-dev is an agent skill that ships inside the reSpeaker Clip firmware repository. It tells a coding agent to treat the checked-out source as authoritative and to read CLAUDE.md before changing firmware, then routes each task to its source of truth: AT commands in at_commands.c, BLE and UDP transport files, audio and DSP in audio.c and Kconfig, storage in storage.c, and power behavior in clip_event.c, storage.c and battery.c.

The skill pins down the firmware's real build and protocol facts so agents stop re-deriving them: the nRF5340 board builds with NCS v3.3.0 and west against board clip/nrf5340/cpuapp, production images use a snippet that disables console logging for meaningful idle-current measurement, session IDs are exactly 14 decimal digits, and success replies are {"ok":true,"data":...} while failures use {"ok":false,"msg":"..."}.

It also records the current protocol rules: use AT+GSTAT, not AT+STATUS?, recording commands are START, STOP, PAUSE, RESUME and MARK, audio mode is normal or enhanced with no runtime bitrate or codec commands, and AT+WIFI=on returns AP credentials with UDP file transfer on port 8089. The firmware itself runs on Zephyr RTOS on the Nordic nRF5340, with PDM microphones, SpeexDSP preprocessing, Opus encoding, BLE, Wi-Fi AP, USB and microSD storage, and a production idle current of about 170 microamps stated in the README.