pycoClaw is a fully featured implementation of OpenClaw based on Micropython

[jetpax]

So I've been building PycoClaw for a while and it kinda spiralled…

The short version: it's a full AI agent running on MicroPython on a $5 ESP32-S3. Not a "send a prompt and get a response" wrapper — a proper OpenClaw-compatible agent loop with recursive tool calling, context compaction, persistent memory (hybrid TF-IDF + vector search, SD card backed), multi-model routing, background tasks, the works.

A few MicroPython-specific notes that might be interesting to folks here:

Async architecture: fully uasyncio-based, non-blocking dual-loop design so WiFi, Telegram polling, and heartbeat all stay alive during multi-step agent reasoning.
C user modules: SSE (Server-Sent Events) streaming is handled by a native C parser — chunked HTTP parsing in pure Python was too slow and heap-hungry for real-time token delivery.
LVGL integration: touchscreen UI runs via the MicroPython LVGL bindings for boards with displays.
Memory on device: SD card-backed persistent memory with on-device TF-IDF + cosine similarity search. No cloud DB needed.

You can talk to it over Telegram or through its own PWA interface (Scripto Studio — a browser-based MicroPython IDE I built that handles flashing, file management, and live chat over WebREPL/WebRTC). PycoClaw installs as an extension, and there are other apps on ScriptoHub, but the Claw is the headline act.

And before anyone says WebREPL!!??, I actually defined a new IANA websocket sub-protocol https://github.com/jetpax/webrepl.git which uses binary frames exclusively over wss:// which is fast secure and reliable, so check that out if you always wanted a webREPL that works

Hardware: any ESP32-S3 with 8 MB flash + PSRAM. ESP32-P4 (RISC-V) also works. RP2350 support is in progress.

Getting started: hit the one-click web installer at pycoclaw.com, plug in your board, done.

GitHub Would love feedback — especially from anyone who's pushed MicroPython's async and memory limits on ESP32.

[bikeNomad]

Hi Jonathan,
Impressive project! Are you going to open-source the code?

[jetpax]

Its mainly Python , when you install you get the scripts , so in that sense yes, its already open, did you already look at them?

[bikeNomad]

I saw your post on HN and was curious about the custom C code. You said:

Stats: 10k LOC platform, 26k LOC PFC agent, and ~18k LOC of custom C extensions to optimize MicroPython’s memory and fast-path execution on the ESP32.

[jetpax]

Yes, had to do that, Micropython networking is too slow, too limited.

[bikeNomad]

Understood. You also added support for debugging and other things. Are you going to open-source any of your C code? It sounds very useful outside of your use case.

[VnVihn]

how to setting config ,pls