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Show HN: Python-based background agents for software dev

https://github.com/cairn-dev/cairn
2•brich4419•2h ago
Built an open-source alternative to Cursor background agents / Jules / Codex. Wanted to see how hard it’d be to make a semi-usable coding agent fully integrated with GitHub—no need to store files locally or spin up a cloud instance. It turned out to be a fun project.

Most of the effort went into faking terminal workflows via the GitHub API, but I also explored some features I found lacking elsewhere. One thing I noticed in Cursor: fullstack tasks often fail when multiple agents run concurrently without coordination. I added a lightweight coordination layer and built in live message-passing (kind of like GNNs), which lets agents working across multiple repos communicate in real time—without blocking or lag. In practice this works really well, and allows you to give arbitrary tasks like "display XYZ data in a chart on frontend", and the system can figure out whether it needs to add a backend route, what data format to use, etc, even when the backend and frontend are in separate repos.

Would love some eyes on the repo, critiques, or any feature requests!

Malicious AI swarms can threaten democracy

https://osf.io/preprints/osf/qm9yk_v2
4•anigbrowl•5m ago•0 comments

Show HN: Node.js Debugger MCP. Run and debug long-lived apps with Claude Code

2•chw9e•6m ago•0 comments

Deep Dive into SVT-AV1's Evolution (Part 1)

https://wiki.x266.mov/blog/svt-av1-fourth-deep-dive-p1
1•todsacerdoti•6m ago•0 comments

OpenBMC Security in Practice: Vulnerabilities, Variants, and AMI MegaRAC OneTree [pdf]

https://eclypsium.com/wp-content/uploads/OpenBMC-Security-in-Practice.pdf
3•cws•7m ago•0 comments

The Lost Art of Logarithms

https://www.lostartoflogarithms.com/chapter01/
2•not-so-darkstar•9m ago•0 comments

A Programmer's Introduction to Mathematics

https://pimbook.org/
1•not-so-darkstar•10m ago•0 comments

All Fios Services Down

https://www.verizon.com/foryourhome/vzrepair/flowengine/UFDService.aspx?Keyword=FIX_ASO
1•ecopoesis•10m ago•0 comments

GPU Comic: When GPU programming hurts so much, all we can do is laugh

https://comic.modular.com/
9•timmyd•12m ago•0 comments

Touring the Zig•EM code-scape (2024)

https://zigem.openem.org/post-003/
1•jstrieb•14m ago•0 comments

Internet Explorer is EVIL (2002)

http://toastytech.com/evil/
1•LorenDB•14m ago•0 comments

ChatGPT Sandbox is running a 3-year-old version of Python

https://texttoslides.ai/blog/openai-old-python
1•sh_tomer•18m ago•0 comments

Career advice, or something like it

https://brooker.co.za/blog/2025/06/20/career.html
2•SchwKatze•18m ago•0 comments

Mastering Montreal – how the modern car copes with F1's notorious 'brake buster'

https://motorsport.tech/formula-1/formula-one-brakes-explained
1•AkshatJ27•18m ago•0 comments

Apple Adds Energy and Battery Labels to iPhone and iPad Pages in EU

https://www.macrumors.com/2025/06/20/apple-adds-labels-to-iphone-ipad-pages-in-eu/
1•tosh•19m ago•1 comments

Accenture says CEOs are postponing hiring consultants due to uncertainty

https://www.ft.com/content/a1a5c903-0a24-4c42-aae0-f86e04c06910
1•wslh•19m ago•2 comments

Defending the Internet: how Cloudflare blocked a monumental 7.3 Tbps DDoS attack

https://blog.cloudflare.com/defending-the-internet-how-cloudflare-blocked-a-monumental-7-3-tbps-ddos/
11•methuselah_in•22m ago•2 comments

The Entire Internet Is Reverting to Beta

https://www.theatlantic.com/technology/archive/2025/06/ai-janky-web/683228/
4•CharlesW•24m ago•0 comments

Windsurf Brand Refresh

https://windsurf.com/blog/our-brand
1•handfuloflight•24m ago•0 comments

Microsoft is blocking Google Chrome through its family safety feature

https://www.theverge.com/news/690179/microsoft-block-google-chrome-family-safety-feature
5•chrisjj•26m ago•1 comments

Freecoding – An Alternative to Vibe Coding

https://snare.dev/musings/freecoding/
2•watersucks•28m ago•0 comments

DeepMind supporting better tropical cyclone prediction with AI

https://deepmind.google/discover/blog/weather-lab-cyclone-predictions-with-ai/
1•gmays•29m ago•0 comments

Mixxx 2.5.2 Released

https://mixxx.org/news/2025-06-13-mixxx-2_5_2-released/
2•SamWhited•30m ago•0 comments

The OWASP Top Tops

https://github.com/psiinon/owasp-top-10-top-10s
2•todsacerdoti•30m ago•0 comments

Show HN: CTO as a Service

https://caas-agency.vercel.app
1•goodpanda•32m ago•0 comments

New dating for White Sands footprints confirms controversial theory

https://arstechnica.com/science/2025/06/study-confirms-white-sands-footprints-are-23000-years-old/
1•_tk_•32m ago•0 comments

Cognitive Complexity [pdf]

https://assets-eu-01.kc-usercontent.com/886afe32-410a-0136-0267-0f7515a29063/39475230-c3ff-4e73-8ab3-fe0c9f21e9dd/Cognitive_Complexity_Sonar_Guide_2023.pdf
3•handfuloflight•33m ago•0 comments

Book creation using almost open source tools

https://nibblestew.blogspot.com/2025/06/book-creation-using-almost-entirely.html
3•ingve•35m ago•0 comments

How not to lose your job to AI

https://80000hours.org/agi/guide/skills-ai-makes-valuable/
2•gorkemcetin•35m ago•0 comments

Microsoft Is Deleting Old Drivers from Windows Update and It Might Break Your PC

https://nerds.xyz/2025/06/microsoft-driver-removal-windows-update-legacy-hardware-breaking/
2•speckx•36m ago•1 comments

Mystery Powerful Radio Pulse Traced Back to NASA Satellite Dead Since 1967

https://www.iflscience.com/mysterious-powerful-radio-pulse-traced-back-to-nasa-satellite-thats-been-dead-since-1967-79712
4•Bluestein•40m ago•0 comments