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Show HN: Duende: Web UX for guiding Gemini as it improves your source code

https://github.com/alefore/duende
8•afc•6mo ago
I wrote a simple web UX in Python/JavaScript that spawns a conversation with Google Gemini with MCP commands that let it work on a specific coding task that you specify: http://github.com/alefore/duende

The UX lets you observe the conversation and provide guidance (e.g. "don't implement Foo through Bar, that's suboptimal; instead …").

It supports a `--review` mode, where once the main conversation says "I'm done with the task", various "evaluation" conversations are spawned, each focusing on reviewing the change from a very specific angle (e.g. "does it introduce useless comments?"). In the future, I'm considering adding other workflows.

I've used it mostly to develop itself (I started with a super rudimentary manual implementation and then mostly used Duende to extend its own implementation) as well as (with moderate success) to add a few new features to [my C++ text editor](http://github.com/alefore/edge).

It's been a lot of fun. I'm still developing my intuitions for what works and what doesn't, but I've already had plenty of experiences where I've been WOW'ed by what LLMs can already accomplish (as well as, to be honest, plenty of very disappointing cases where it struggles significantly on tasks that I expected would have been trivial). It's a learning experience, seeing things like how to avoid hallucinations; developing an intuition for how much to break down large tasks into smaller ones; or knowing when to abort a conversation and restart it with an improved prompt (vs continue to steer it in the right direction).

I think investing up-front in setting up a good context (e.g., good validation logic, useful constant contexts, a good set of "review evaluators" that can push-back against sloppy code) can go a long way to increase the odds of success.

It has changed my perception on the applicability of AI for developing software. While I've reviewed all the outputs (and often rewrite parts of them manually), I'm already incorporating it into (some parts) of my development life-cycle.

I have many ideas for improvements, but figured I'd share this early and ask for feedback. Hopefully others find it interesting; would love to hear your thoughts.

Show HN: MCP App to play backgammon with your LLM

https://github.com/sam-mfb/backgammon-mcp
2•sam256•24m ago•0 comments

Show HN: Look Ma, No Linux: Shell, App Installer, Vi, Cc on ESP32-S3 / BreezyBox

https://github.com/valdanylchuk/breezydemo
241•isitcontent•16h ago•26 comments

Show HN: I spent 4 years building a UI design tool with only the features I use

https://vecti.com
343•vecti•18h ago•153 comments

Show HN: If you lose your memory, how to regain access to your computer?

https://eljojo.github.io/rememory/
307•eljojo•19h ago•190 comments

Show HN: I'm 75, building an OSS Virtual Protest Protocol for digital activism

https://github.com/voice-of-japan/Virtual-Protest-Protocol/blob/main/README.md
5•sakanakana00•1h ago•1 comments

Show HN: I built Divvy to split restaurant bills from a photo

https://divvyai.app/
3•pieterdy•1h ago•0 comments

Show HN: R3forth, a ColorForth-inspired language with a tiny VM

https://github.com/phreda4/r3
77•phreda4•15h ago•14 comments

Show HN: Smooth CLI – Token-efficient browser for AI agents

https://docs.smooth.sh/cli/overview
93•antves•1d ago•69 comments

Show HN: ARM64 Android Dev Kit

https://github.com/denuoweb/ARM64-ADK
17•denuoweb•2d ago•2 comments

Show HN: BioTradingArena – Benchmark for LLMs to predict biotech stock movements

https://www.biotradingarena.com/hn
26•dchu17•20h ago•12 comments

Show HN: I Hacked My Family's Meal Planning with an App

https://mealjar.app
2•melvinzammit•3h ago•0 comments

Show HN: Artifact Keeper – Open-Source Artifactory/Nexus Alternative in Rust

https://github.com/artifact-keeper
152•bsgeraci•1d ago•64 comments

Show HN: Slack CLI for Agents

https://github.com/stablyai/agent-slack
48•nwparker•1d ago•11 comments

Show HN: I built a free UCP checker – see if AI agents can find your store

https://ucphub.ai/ucp-store-check/
2•vladeta•4h ago•2 comments

Show HN: Gigacode – Use OpenCode's UI with Claude Code/Codex/Amp

https://github.com/rivet-dev/sandbox-agent/tree/main/gigacode
18•NathanFlurry•1d ago•9 comments

Show HN: Compile-Time Vibe Coding

https://github.com/Michael-JB/vibecode
10•michaelchicory•5h ago•1 comments

Show HN: Slop News – HN front page now, but it's all slop

https://dosaygo-studio.github.io/hn-front-page-2035/slop-news
15•keepamovin•6h ago•5 comments

Show HN: Daily-updated database of malicious browser extensions

https://github.com/toborrm9/malicious_extension_sentry
14•toborrm9•21h ago•7 comments

Show HN: Horizons – OSS agent execution engine

https://github.com/synth-laboratories/Horizons
23•JoshPurtell•1d ago•5 comments

Show HN: Micropolis/SimCity Clone in Emacs Lisp

https://github.com/vkazanov/elcity
172•vkazanov•2d ago•49 comments

Show HN: Falcon's Eye (isometric NetHack) running in the browser via WebAssembly

https://rahuljaguste.github.io/Nethack_Falcons_Eye/
5•rahuljaguste•15h ago•1 comments

Show HN: Fitspire – a simple 5-minute workout app for busy people (iOS)

https://apps.apple.com/us/app/fitspire-5-minute-workout/id6758784938
2•devavinoth12•9h ago•0 comments

Show HN: I built a RAG engine to search Singaporean laws

https://github.com/adityaprasad-sudo/Explore-Singapore
4•ambitious_potat•9h ago•4 comments

Show HN: Local task classifier and dispatcher on RTX 3080

https://github.com/resilientworkflowsentinel/resilient-workflow-sentinel
25•Shubham_Amb•1d ago•2 comments

Show HN: Sem – Semantic diffs and patches for Git

https://ataraxy-labs.github.io/sem/
2•rs545837•10h ago•1 comments

Show HN: A password system with no database, no sync, and nothing to breach

https://bastion-enclave.vercel.app
12•KevinChasse•21h ago•16 comments

Show HN: FastLog: 1.4 GB/s text file analyzer with AVX2 SIMD

https://github.com/AGDNoob/FastLog
5•AGDNoob•12h ago•1 comments

Show HN: GitClaw – An AI assistant that runs in GitHub Actions

https://github.com/SawyerHood/gitclaw
9•sawyerjhood•21h ago•0 comments

Show HN: Gohpts tproxy with arp spoofing and sniffing got a new update

https://github.com/shadowy-pycoder/go-http-proxy-to-socks
2•shadowy-pycoder•13h ago•0 comments

Show HN: I built a directory of $1M+ in free credits for startups

https://startupperks.directory
4•osmansiddique•13h ago•0 comments