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Beyond the winners of our "Built with Opus 4.6 Claude Code Hackathon," there were so many amazing projects that deserve a shoutout. Today I want to highlight Pasal by Ilham Putra. 280 million Indonesians can't easily search their own laws. Pasal fixes that.

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284,120 views • 5 months ago •via X (Twitter)

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i built pasal(.)id during the Claude hackathon! 280 million indonesians access their laws through government pdfs scattered across 1,200+ websites. no search. no structure. just pdfs. there's no single ideal place to look up indonesian law. pasal(.)id changes that. we parse government pdfs into clean structured text and expose it through an MCP server. connect claude, ask a legal question about indonesia, get an answer with exact article citations. real law, not hallucination. but here's what gets me excited: at scale, parsing 40k+ pdfs will have edge cases... so we built a correction agent on opus 4.6 that picks up user-submitted corrections, verifies them against the original pdf, and applies fixes autonomously. and when it spots a systemic bug, it opens a github issue with a diagnosis and suggested code fix. the parser gets better on its own! entire codebase built with opus 4.6. video: live site, working MCP server, correction agent all running in production right now. open source and free forever! thank you for organizing the hackathon! cc: Cerebral Valley Ivan Porollo Boris Cherny cat Thariq Lydia Hallie ✨ Ado

i built pasal(.)id during the Claude hackathon! 280 million indonesians access their laws through government pdfs scattered across 1,200+ websites. no search. no structure. just pdfs. there's no single ideal place to look up indonesian law. pasal(.)id changes that. we parse government pdfs into clean structured text and expose it through an MCP server. connect claude, ask a legal question about indonesia, get an answer with exact article citations. real law, not hallucination. but here's what gets me excited: at scale, parsing 40k+ pdfs will have edge cases... so we built a correction agent on opus 4.6 that picks up user-submitted corrections, verifies them against the original pdf, and applies fixes autonomously. and when it spots a systemic bug, it opens a github issue with a diagnosis and suggested code fix. the parser gets better on its own! entire codebase built with opus 4.6. video: live site, working MCP server, correction agent all running in production right now. open source and free forever! thank you for organizing the hackathon! cc: Cerebral Valley Ivan Porollo Boris Cherny cat Thariq Lydia Hallie ✨ Ado

ilham

38,420 views • 5 months ago

This is the showcase of a new agentic future! Announcing the winners of the Bradbury Builders Hackathon, where 280+ builders built 135+ projects on GenLayer with AI-native consensus, native web access, and contracts that pay their creators forever. Here are the winners 👇

This is the showcase of a new agentic future! Announcing the winners of the Bradbury Builders Hackathon, where 280+ builders built 135+ projects on GenLayer with AI-native consensus, native web access, and contracts that pay their creators forever. Here are the winners 👇

GenLayer

22,300 views • 3 months ago

Most Software engineers really hate hardware or try it once and never again. So I built a tool that helps you generate, compile and run hardware simulations and it’s pretty cool. My hackathon entry for the build with opus 4.6 by Claude and Cerebral Valley

Most Software engineers really hate hardware or try it once and never again. So I built a tool that helps you generate, compile and run hardware simulations and it’s pretty cool. My hackathon entry for the build with opus 4.6 by Claude and Cerebral Valley

Jerry

43,882 views • 5 months ago

Anthropic just announced web search built into their API. So without writing a line of code, let’s create a mobile app called Claudexity, that allows us to chat with Claude that can search the web. 1. Prototype VibeCode (Claude API built into app you don’t need to bring your own) 2. Export to Cursor, paste docs and add search step. Note: make sure web search is enabled in your Anthropic Console.

Anthropic just announced web search built into their API. So without writing a line of code, let’s create a mobile app called Claudexity, that allows us to chat with Claude that can search the web. 1. Prototype VibeCode (Claude API built into app you don’t need to bring your own) 2. Export to Cursor, paste docs and add search step. Note: make sure web search is enabled in your Anthropic Console.

Riley Brown

45,952 views • 1 year ago

I built a bot on an ESP32 that can create full projects by itself. Ask it to generate images, videos, 3D, build a website and publish it, it does everything autonomously. Powered by Claude Opus 4.6 for code, visual content generated with fal, bot powered via OpenClaw🦞 The skills to generate project with fal are here All running on a tiny M5Stack Core2.

I built a bot on an ESP32 that can create full projects by itself. Ask it to generate images, videos, 3D, build a website and publish it, it does everything autonomously. Powered by Claude Opus 4.6 for code, visual content generated with fal, bot powered via OpenClaw🦞 The skills to generate project with fal are here All running on a tiny M5Stack Core2.

Lovis Odin

50,371 views • 5 months ago

Introducing Claude Code Templates 🚀 I originally built this to streamline how I set up new projects with Claude Code…just a small tool to make my own workflow smoother. No install, just run: npx claude-code-templates Right now, it configures Commands, Hooks, MCPs, and settings.json for JavaScript/TypeScript and Python projects. It made things so much easier for me that I decided to share it with the community. Open-source and open to ideas — feel free to contribute! Big thanks to the team at Anthropic and everyone behind Claude Code Community 🙌

Introducing Claude Code Templates 🚀 I originally built this to streamline how I set up new projects with Claude Code…just a small tool to make my own workflow smoother. No install, just run: npx claude-code-templates Right now, it configures Commands, Hooks, MCPs, and settings.json for JavaScript/TypeScript and Python projects. It made things so much easier for me that I decided to share it with the community. Open-source and open to ideas — feel free to contribute! Big thanks to the team at Anthropic and everyone behind Claude Code Community 🙌

Daniel San

28,410 views • 1 year ago

Solana is already in Seoul! 🇰🇷 Seoulana Hackathon has officially wrapped! 🗓️ 3 Days 🧑‍💻 300 Hackers 🏆 15 Track Winners + 3 Grand Prize Winners 📝 16 Workshops, 6 Panels & Keynotes from amazing projects Huge shoutout to all the hackers — everyone’s a winner in their own way 💪 Big thanks to our sponsors, speakers, mentors, and judges for being part of it!

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Superteam Korea

52,111 views • 1 year ago

Claude Code with Opus 4.7 is the best vibe coding tool I've ever used The thing is there were several new features that change how you should be using it In this video I cover 7 secret updates the creator of Claude Code just revealed If you use Claude Code this is a must watch

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Alex Finn

36,936 views • 3 months ago

Claude Opus 4.6 was just released... And it's now the default model in the #1 full stack vibe coding platform. Vibecode uses the Claude Code harness, so expect to be blown away by the quality of the mobile apps and web apps that you create. In celebration of 1,000,000 total apps created on vibecode, we're giving away a free month of Opus 4.6 for those who reply to this post. Reply and we'll DM you credits 👇

Claude Opus 4.6 was just released... And it's now the default model in the #1 full stack vibe coding platform. Vibecode uses the Claude Code harness, so expect to be blown away by the quality of the mobile apps and web apps that you create. In celebration of 1,000,000 total apps created on vibecode, we're giving away a free month of Opus 4.6 for those who reply to this post. Reply and we'll DM you credits 👇

Chorus.com

412,386 views • 5 months ago

ASCII diagrams in Claude Code were driving me crazy. So I built a tool where Claude writes JSON → renders as interactive flowcharts and mockups → I edit visually → Claude sees my changes. Shoutout to Every 📧 for having me on the Vibe Code Camp livestream to demo this today We want to make this available! If you want access, comment "flowy" on this post. Here's 2 min on how it works:

ASCII diagrams in Claude Code were driving me crazy. So I built a tool where Claude writes JSON → renders as interactive flowcharts and mockups → I edit visually → Claude sees my changes. Shoutout to Every 📧 for having me on the Vibe Code Camp livestream to demo this today We want to make this available! If you want access, comment "flowy" on this post. Here's 2 min on how it works:

CJ Hess

199,961 views • 6 months ago

Pi was built when there were already agent harnesses around. Here’s why Mario Zechner(Mario Zechner), found them suboptimal and built Pi, a minimalist self-modifying agent: #1 - Mario initially was a believer in Claude Code: "I was a believer in Claude code because they were the first that packaged agentic search up in a really compelling package. And at the time that fit my workflow really well. Everything around the LLM was kind of nice and tidy and easy to understand. I was super happy. I was proselytising Claude code." #2 - Reverse engineering Claude Code highlighted the degradation that Mario felt as a user: "I personally like simple tools that are stable and that I can rely on. Even if they have non-deterministic parts, all the deterministic parts should be as stable as possible. That was just not the experience with Claude Code around summer 2025. They would take away your control of the context. They would inject stuff behind your back, which is bad. Then, your workflows stopped working because there's now a system reminder that you don't even see in the UI that would modify the behaviour of the model. They would also do this to the system prompt. I built a little service where I can track the progression or evolution of the system, prompt and tool definitions and, with every release, it was messing with stuff. That just messed with my workflows and I don't appreciate that." #3 - PI was built with an appreciation for simple and reliable tools: "If I commit to a development tool, I want it to be a stable, reliable thing like a hammer. I don't want my hammer to break a different spot every day. That's terrible. We need somebody who goes the full velocity kind of way. But I don't want to work with a tool like that."

Pi was built when there were already agent harnesses around. Here’s why Mario Zechner(Mario Zechner), found them suboptimal and built Pi, a minimalist self-modifying agent: #1 - Mario initially was a believer in Claude Code: "I was a believer in Claude code because they were the first that packaged agentic search up in a really compelling package. And at the time that fit my workflow really well. Everything around the LLM was kind of nice and tidy and easy to understand. I was super happy. I was proselytising Claude code." #2 - Reverse engineering Claude Code highlighted the degradation that Mario felt as a user: "I personally like simple tools that are stable and that I can rely on. Even if they have non-deterministic parts, all the deterministic parts should be as stable as possible. That was just not the experience with Claude Code around summer 2025. They would take away your control of the context. They would inject stuff behind your back, which is bad. Then, your workflows stopped working because there's now a system reminder that you don't even see in the UI that would modify the behaviour of the model. They would also do this to the system prompt. I built a little service where I can track the progression or evolution of the system, prompt and tool definitions and, with every release, it was messing with stuff. That just messed with my workflows and I don't appreciate that." #3 - PI was built with an appreciation for simple and reliable tools: "If I commit to a development tool, I want it to be a stable, reliable thing like a hammer. I don't want my hammer to break a different spot every day. That's terrible. We need somebody who goes the full velocity kind of way. But I don't want to work with a tool like that."

The Pragmatic Engineer

62,825 views • 2 months ago

I built a form-filling agent that anyone can use 💫 This is an extremely simple but useful (I hope) app. Upload a fillable form 📋, some context files, and chat with the agent to fill the form out automatically ✍️ 1️⃣ Yes it is a Claude Code SDK wrapper 2️⃣ It is better and faster than ChatGPT/Claude UI out of the box 3️⃣ We use LlamaParse to parse the context files, so you can have more trust that we are able to read context without hallucinations (e.g. messy scanned handwriting, drivers license photo, and more). This was one of my holiday Claude Code vibe-coding projects. Built with Opus 4.5, and also powered by Opus 4.5. Feeling the AGI 🫡 App is here: Repo is open-source:

I built a form-filling agent that anyone can use 💫 This is an extremely simple but useful (I hope) app. Upload a fillable form 📋, some context files, and chat with the agent to fill the form out automatically ✍️ 1️⃣ Yes it is a Claude Code SDK wrapper 2️⃣ It is better and faster than ChatGPT/Claude UI out of the box 3️⃣ We use LlamaParse to parse the context files, so you can have more trust that we are able to read context without hallucinations (e.g. messy scanned handwriting, drivers license photo, and more). This was one of my holiday Claude Code vibe-coding projects. Built with Opus 4.5, and also powered by Opus 4.5. Feeling the AGI 🫡 App is here: Repo is open-source:

Jerry Liu

48,375 views • 6 months ago

AI truly unlocks experiences that were just unimaginable before. For example I liked playing a game but I wanted to build a slightly different version of the game with some changes. 4 hours with Claude Code, Gemini 3 and Copilot, and I am easily 50% there to an MVP.

AI truly unlocks experiences that were just unimaginable before. For example I liked playing a game but I wanted to build a slightly different version of the game with some changes. 4 hours with Claude Code, Gemini 3 and Copilot, and I am easily 50% there to an MVP.

Arnav Gupta

14,870 views • 6 months ago

As a visual person, I hate working in the CLI. But after using Claude Code a few times, it’s impossible to go back. The problem isn’t Claude. It’s the interface around it. So we built the best Claude Code client we could imagine. Runs fully in the browser. Parallel branches and projects. Live previews for every change. A calm, clean UI. Free to use with your own Claude keys. Reply if you want early access 👀

As a visual person, I hate working in the CLI. But after using Claude Code a few times, it’s impossible to go back. The problem isn’t Claude. It’s the interface around it. So we built the best Claude Code client we could imagine. Runs fully in the browser. Parallel branches and projects. Live previews for every change. A calm, clean UI. Free to use with your own Claude keys. Reply if you want early access 👀

serafim

251,276 views • 7 months ago

do you have an interesting yet simple idea that you can't get claude code / codex to build? if so, I want to hear it or see a sketch, and then try building a decent start for you. I need little distractions when I'm tired of working on my own projects that never end. the end result would be an open source code artifact, and I'll do my best to include prompts/process where possible. video is the quintessential example, time-helix built from a Tim Babb sketch/idea

do you have an interesting yet simple idea that you can't get claude code / codex to build? if so, I want to hear it or see a sketch, and then try building a decent start for you. I need little distractions when I'm tired of working on my own projects that never end. the end result would be an open source code artifact, and I'll do my best to include prompts/process where possible. video is the quintessential example, time-helix built from a Tim Babb sketch/idea

Codetaur

24,190 views • 2 months ago

Claude is going for the girls ✨ My IG and TikTok feeds have been flooded with sponsored Claude videos from one demographic of creator - artsy girls who can't code. I saw so many of them that I decided to start saving them down (excerpts ⬇️). There's definitely a pattern!

Claude is going for the girls ✨ My IG and TikTok feeds have been flooded with sponsored Claude videos from one demographic of creator - artsy girls who can't code. I saw so many of them that I decided to start saving them down (excerpts ⬇️). There's definitely a pattern!

Justine Moore

424,116 views • 6 months ago

OPUS 4.6 WAS NERFED DUE TO DEMAND BUT OPUS 4.5 DOES NOT SEEM TO BE HIT this guy ran the same test on both models. Opus 4.6 fails consistently but Opus 4.5 passes every time he switched back to Opus 4.5 on Claude Code and said "what a difference, feels like i got Opus back finally" he is now using this test as a "quantization canary" that runs it at the start of every session before doing real work. if it fails, the model is degraded. five Opus 4.6 windows in a row failed the untransparent nerfing is pushing people to cancel their Max plans if you've been feeling like Opus got dumber lately, you're not imagining it i'd suggest switching to Opus 4.5 to see the difference for yourself

OPUS 4.6 WAS NERFED DUE TO DEMAND BUT OPUS 4.5 DOES NOT SEEM TO BE HIT this guy ran the same test on both models. Opus 4.6 fails consistently but Opus 4.5 passes every time he switched back to Opus 4.5 on Claude Code and said "what a difference, feels like i got Opus back finally" he is now using this test as a "quantization canary" that runs it at the start of every session before doing real work. if it fails, the model is degraded. five Opus 4.6 windows in a row failed the untransparent nerfing is pushing people to cancel their Max plans if you've been feeling like Opus got dumber lately, you're not imagining it i'd suggest switching to Opus 4.5 to see the difference for yourself

Om Patel

695,877 views • 3 months ago

Anthropic and Lovable co-hosted an exclusive hackathon at Slush 2025 called Push to Prod. 100+ builders competed to build production-ready apps in 60 minutes. The winners Erwan / Sorcier 🧙🏻‍♂️✨ Théo Guidoux clem built CLICCC and won dinner with Anthropic, Lovable, and VCs, and they signed their first corporate clients right after the hackathon. The finalists built: - CLICCC, AI sales companion that syncs IRL interactions to your CRM - @WepostNO, app that generates a brand for you based on your website - Lavoe, a music production tool powered by Claude - DiscordLogs, discord log analysis for large communities - Craci, software supply chain management with EU Cyber Resilience Act automation All 5 finalists walked away with $30k in Claude build credits and a year of Lovable Pro. The Wepost team is even giving their $30k in credits back to the Lovable community by offering parts of their product for free 🫶 Join our next hackathon or host your own:

Lovable

21,272 views • 7 months ago

I built an AI Factory that uses Claude Code agents to build apps while I sleep. This is an automated "assembly line" pipeline, all run by Claude Opus 4.5. Projects move through a Kanban-like system from Idea to Research, Architecture, Coding and Testing. Factory workers start with market research, searching the web and social media. Then they validate everything, checking app stores for competition and securing a domain name. (All automated by APIs and MCPs) They automatically create several rounds of app UI revisions. When I wake up, there are projects waiting for me to review: approve this design, give feedback, send that one back for improvement. Projects are actively coded and tested by the agents, while the entire process is tracked and logged (with "worker documents" that travel each step of the way, like a real factory.)

I built an AI Factory that uses Claude Code agents to build apps while I sleep. This is an automated "assembly line" pipeline, all run by Claude Opus 4.5. Projects move through a Kanban-like system from Idea to Research, Architecture, Coding and Testing. Factory workers start with market research, searching the web and social media. Then they validate everything, checking app stores for competition and securing a domain name. (All automated by APIs and MCPs) They automatically create several rounds of app UI revisions. When I wake up, there are projects waiting for me to review: approve this design, give feedback, send that one back for improvement. Projects are actively coded and tested by the agents, while the entire process is tracked and logged (with "worker documents" that travel each step of the way, like a real factory.)

Benjamin De Kraker

480,902 views • 6 months ago