It's a Testcase for a much larger mission.
Cast spells, not tweets. SpellCast is a X | Twitter-like social app with no servers, no accounts, and no company in the middle. Your messages (called "spells") travel directly between you and the people you connect with, and everything lives in your own browser. It's a single web page - nothing to install.
note: messages are authenticated, impersonation is detectable, and private-audience posts are end-to-end encrypted!
demo: https://sience.github.io/
repo: https://github.com/SiENcE/spellcast (open source)
disclaimer: at the current state it's a proof of concept
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● adaptive action & reasoning · v0.4.0 · apache 2.0
open source python. ~80-line core loop. swap providers mid-session.
does what claude code, codex, and pi mono do — maybe a bit more.
if you want something you can actually read and modify, might be useful.
A few things that may be interesting:
- Python 3.11+
- fully Open Source / Apache 2.0 + complete documentation
- thin core loop
- works with Anthropic, OpenAI, Gemini, Ollama, and compatible endpoints
- TUI / WEB / CLI
- ACP support for IDEs like ZED | IntelliJ | VSCode
- sandboxed tool execution / safety features
- persistent sessions across providers switches
- queued prompts
- shadow branching (session-scoped git isolation)
- extension / plugin api
So I guess the pitch is:
If you like tools like Claude Code / Codex / Cursor, but want something more hackable in Python, local-first, and easier to inspect, this might be useful.
Website: https://fischerf.github.io/aar/
GitHub: https://github.com/fischerf/aar
If you try it and have ideas, I’d be glad to hear them.
Hi,
I’ve been working on a small open-source project called - aar:
https://fischerf.github.io/aar/
It’s an AI coding agent/framework in Python, but the main point is that it stays pretty small and readable.
A lot of tools in this space are impressive, but also quite opaque. I wanted something that can do the usual agent things — CLI, TUI, ACP editor integration, tool use, sessions, web/API mode, provider switching, sandboxing — while still being understandable enough that you can open the code and actually follow what’s going on.
A few things that may be interesting:
- thin core loop
- Python 3.11+
- open source / Apache 2.0
- works with Anthropic, OpenAI, Gemini, Ollama, and OpenAI-compatible endpoints
- terminal UI + full-screen TUI
- ACP support for editor integration
- sandboxed tool execution / safety features
- persistent sessions across providers switches
- typed event model
- queued prompts
- shadow branching (session-scoped git isolation)
- extension system
So I guess the pitch is:
If you like tools like Claude Code / Codex, but want something more hackable in Python, local-first, and easier to inspect, this might be useful.
Website: https://fischerf.github.io/aar/
GitHub: https://github.com/fischerf/aar
If you try it and have ideas, I’d be glad to hear them.