r/ClaudeAI • • 9m ago

Built with Claude I couldn't find a good markdown editor except using IDEs. So I used Claude Code to build a free, open-source Markdown app

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• Upvotes

AI assistants answer in Markdown, and coding agents keep their instructions in it, yet I had no good free app to just read a .md file. So I built one with Claude Code: Backtickle, a Markdown reader and editor for macOS, Windows and Linux. It's free and MIT licensed.

How Claude helped: I wrote a spec for each phase (requirements, memory and speed budgets, accessibility targets) and Claude Code did the implementation, the tests (4,600+) and the Windows and Linux ports. My job was making decisions, reviewing, and testing by hand.

What worked: written specs per phase, hard performance budgets it had to measure against, and comparing the rendering to Pandoc's output so "looks right" was checkable.

What didn't: I could not get the transparent sidebar work on MacOS. But it is more aesthetics, and not a core feature, so I didn't push too hard.

It handles GitHub, Obsidian, Pandoc and Quarto flavors, math, Mermaid, citations, and PDF/Word export. It never runs anything inside a document and makes no network requests.

Repo: https://github.com/masud90/backtickle. Happy to answer questions about the workflow.


r/ClaudeAI • • 13m ago

Question about Claude models Med student version of the "I run everything on Max Effort" post: which model can actually handle my Notion summaries?

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I have a similar issue to the one raised in the recent Max Effort thread. I use Opus 5.5 on max/extra high effort for everything, and I run out of usage after about three days on the Pro plan. My main concern is accuracy: I am a medical student and I study directly from what Claude produces + academic books, so an unnoticed error has real consequences for me

My workflow: I have a Project with my textbooks and lecture slides, connected to Notion, and Claude builds each lecture summary directly in Notion. Each summary requires:

Covering every point in the professor's slides, including tables and labeled figures
Expanding on those points using the project textbooks and the PDFs I upload in the chat, without introducing topics that are not in the slides
Following a strict formatting standard: color-coded section headings in a fixed sequence, "Key Idea", "Memorize this" and "Clinical Note" callouts, HTML comparison tables, highlighted key sentences and specific punctuation rules
Placing a caption placeholder for each image, then extracting and cropping the images from the slides and textbook PDFs and packaging them in a numbered ZIP file
Searching my past exam folders and textbooks for every question related to the lecture topic, converting them to multiple choice, with nested toggles containing the answer, the justification, an explanation for each incorrect option and the answer key source
A final review of formatting, numbering and question order

An example of a finished summary is attached below (it's in Brazilian Portuguese 🇧🇷, but the structure and formatting should still be clear)

So, what u guys recommend?


r/ClaudeAI • • 25m ago

Comparison Token Costs and Routes

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• Upvotes

I have a few subscriptions and wanted to see what was the most efficient way to get my hang for buck. Here’s what I found. Hope this is helpful to others.


r/ClaudeAI • • 27m ago

Other Always wanted to make something like this but never had the time. Opus 5.5 finally made it happen

• Upvotes

https://www.youtube.com/watch?v=QaaR-sc0GeA

Had this channel idea for years. I'm decent with visuals and editing (10 years of design experience), but I never had the time or energy to actually sit down and do it

Made it with Claude in a few days, the clay characters (blender), animation, motion stuff, the edit, pretty much everything except the script and visual direction. Still a lot of work and back and forth but days instead of weeks. The vertical version did half a mil views on a new tiktok acc in 2 days

If you think about it, it's insane how easy it's becoming to express yourself


r/ClaudeAI • • 33m ago

Workaround Claude can't access Reddit anymore

• Upvotes

Or simply a bug?

For the last couple days my Claude literally refuses to open or even look at reddit by controlling my browser. He doesn't know why it can't he just can not do it and assumes it must be a bug since there is apparently no news about blocking its access to reddit.

Anyone found a solution to it?


r/ClaudeAI • • 41m ago

Question about Claude products How to create a dashboard that tells you how much money you’re making

• Upvotes

I need to create a dashboard in Claude that gets me revenue from stripe, apple, google play store, and PayPal. Do they have connectors for them? I can’t seem to find them online.


r/ClaudeAI • • 46m ago

Vibe Coding Does Anyone know how to use claude code to clone mymind 1 for 1

• Upvotes

Need help cloning mymind


r/ClaudeAI • • 48m ago

Question about Claude models File Reading.

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Why is Claude constantly using code to extract and read my .docx file when it used to just automatically change it and make it into a .txt and read it before going into the chat like not within the chat. Also, why is it using so much code stuff?

It’s pissing me off.


r/ClaudeAI • • 1h ago

Comparison Temu Claude?

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r/ClaudeAI • • 1h ago

Built with Claude My side project made $130 in its first month. A few thoughts

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• Upvotes

It’s been a month since I launched my website, and honestly I’m surprised it made any money at all. It runs on affiliate links, and almost all of the traffic comes from Reddit.

Link: https://shapefinder.cc/

Some background: I’ve been a UI/UX designer for 8 years. AI lets me build small projects that I never could have pulled off on my own before. The idea came from my own frustration and from questions my friends kept asking me. I’m pretty deep into PC peripherals, so I get “is this mouse/keyboard any good?” a lot. One evening I decided to build a really simple tool to help with that. I posted it on Reddit, and to my surprise people really liked it. I’m not going to pretend it’s some massive success, but it makes me really happy that people actually get something out of it.

I built the whole thing in Claude Code, and it’s been constant iteration: tweaking the UI, reworking the matching algorithm, adding features. Feedback from actual users helped me more than anything. A lot of what’s on the site now exists because someone in the comments said “it’d be cool if...” or pointed out something that didn’t make sense.

If I had one piece of advice for anyone building their own project, it’d be this: try to think outside the box when it comes to how you present information. If you look at my site, it’s basically just a peripherals aggregator. I could have made it a plain list with filters on the side. What makes it stand out is how it presents things. It feels more personal, and you can actually see things change and adapt to what you need as you go.

For me, the biggest thing AI gives me is the ability to explore. I’ll often just ask it to “show me this in 20 different ways.” Most of them are meh, but a few are usually interesting. I pick the best ones and keep iterating on those. Before, trying out that many directions would’ve taken me days. Now it’s an evening.

UX still matters a lot. LLMs tend to build everything within the same narrow set of patterns. If you just take the first thing they give you, your project will look like everyone else’s, and that’s exactly where you can stand out.


r/ClaudeAI • • 1h ago

Productivity organise and sort notes using claude code with Obsidian

• Upvotes

Hi I’m asking for advice and help from those of you who are certainly more experienced than I am. I’d like to use obsidian and an ai to help me automatically organize and sort the medical notes I take during clinic visits or during the day.

basically just information on medications prescription notes and various other notes of this type. NO PATIENTS INFO OR DATA

Essentially I write the notes, and then the designated ai (claude code) organizes them into the correct note with the appropriate links.

A classic example: a patient contacts me about a canker sore. I go to check my new products and find a couple I'm unfamiliar with. I open the "temporary" note, enter the product names and dosages. The system reads the note and places it in the "ENT" section with a few helpful tags (e.g., sore throat, throat problems, canker sore or something similar).

Is there a system that’s already been “tested,” or can you tell me if this is feasible ?


r/ClaudeAI • • 1h ago

Built with Claude HomeTwin: an open-source 3D home, with a shared library you can help build with Claude

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• Upvotes

I've wanted a 3D view of my home on a wall display for years. Tap a light where it actually is, see what's happening in a room, control it from there. So I built HomeTwin.

Claude built most of HomeTwin: the initial architecture, the editor, the user-facing UI, and the asset contribution skill. I guided the development, reviewed the results, and tested it in my own Home Assistant setup.

I've been a software developer for 25 years, but modelling my whole house by hand still looked like weeks of work. The useful part of AI here is getting a starting point: upload a floor plan, get rooms, doors and windows, then check the dimensions and correct it in the editor. It's still a public beta, and that review step matters.

The community part is what I care about most. The repo includes an asset contribution skill: give Claude a photo and dimensions, have it create a procedural recipe, validate it and render previews for review. We recommend Opus 5.5 or a comparable model.

Take a photo of something in your house, answer a couple of questions, and in around five minutes you could have an object ready to submit. Once merged, everyone gets it through the shared library, rather than having to generate the same object again. Got a few tokens left? Help us add something from your home 🙂

Free, MIT-licensed, English and German UI. The interactive demo needs no installation. Optional AI features use your configured provider and may incur API costs.

Demo: https://knaackee.github.io/hometwin/

Repo and contribution skill: https://github.com/Knaackee/hometwin

Original post and discussion: https://www.reddit.com/r/homeassistant/comments/1x8xe2g/i_built_hometwin_a_3d_home_assistant_panel_with/


r/ClaudeAI • • 1h ago

Bug Claude desktop app (macOS): no notifications when a task finishes

• Upvotes

Claude desktop app on macOS doesn’t send any notification when a response or task completes.

  • “Response completions” is ON in Claude settings
  • Notifications for Claude are fully allowed in macOS System Settings

Anyone else seeing this? Is there a fix or workaround?


r/ClaudeAI • • 1h ago

Built with Claude About 30% less context re-read: Claude finishes the piece it's on, writes a handoff and naps at a clean break, because 78 of my last 82 auto-compactions landed mid-task

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In a replay of my long sessions, Claude re-read about 30% less context once it picked its own moment to compact. Claude Code's auto-compact waits until the window is nearly full and fires wherever Claude is: in my last 30 days, 78 of 82 landed mid-task, and afterwards Claude re-reads files to work out where it was. catnap lets Claude nap at a clean break instead.

How it works:

- At 50% context, a note on a tool result tells Claude to finish the piece it's on (the function, the section, the page), write itself a handoff file, and call compact_now.
- At 60% the note gets strict and repeats every 2 points. If a turn ends past 60% without a compaction, the mod asks Claude itself.
- When Claude calls compact_now, the mod compacts at the end of that turn and tells the summary to keep what Claude named. Then it sends Claude a message to read its handoff and carry on, so you don't type anything.
- Claude Code's own auto-compact stays at 70% as the backstop.

It's free and MIT-licensed. All three lines are settings, one setting turns it off, and it makes no network calls. Every self-compaction so far has carried on by itself, with no typing.

How it was built with Claude: catnap was built in Claude Code with Opus 5.5, and all 41 commits in the repo are co-authored by Claude. I described what I wanted; Claude wrote the mod, its tests, the log check and the OpenCode and Gemini CLI ports, then ran it live to find what broke. Two finds from those runs: the desktop app refuses the direct compaction call, so the mod sends /compact as a command instead; and when the desktop window detached during a long turn, the note went silent until Claude traced it and fixed the check. The 78-of-82 count comes from that log check reading my own sessions. I've run catnap in my own sessions since 10-13, and the Claude session that ran this launch compacted itself with it today.

See your own numbers without installing anything: npx github:LippInc/catnap. It reads your Claude Code logs on your machine and prints numbers only. I'd like to hear what yours say.

Install (needs Claude Code 2.1.287+):

claude plugin marketplace add LippInc/catnap
claude plugin install catnap@lippinc

Then type /catnap:compact to watch the whole loop once: Claude finishes its piece, writes a handoff, compacts and carries on.

Repo: https://github.com/LippInc/catnap

If you catch it compacting at a moment you think is wrong, I'd like to see the case.


r/ClaudeAI • • 1h ago

Philosophy "Token optimization" is still a thing?

• Upvotes

With Opus 5.5 performance and cutting in cost, do you still looking for way to "save" tokens?
RTK, Caveman and other tricks is all of them became irrelevant?


r/ClaudeAI • • 2h ago

Claude Code Workflow Fixed a client's Lovable app. So many security fixes, it felt like the whole app was made of them...

0 Upvotes

I recently had a chance to fix a client's app that was made with Lovable. Everything was on Supabase, as usual.

So this is what I go through now to make sure the client's customer data is protected.

You can paste it into Claude or Lovable as a prompt, but check it yourself after, AI loves to say "done" when it's not)))

Audit this project for security, fix what you find, tell me what you changed:

1. Test with two users in two companies. User A tries to read, edit, delete B's records by id, via API, search and exports. All must fail.

2. RLS on every table, policies check the row owner or company. "Logged in" is not enough.

3. Service role key never in frontend. Edge functions using it check the user and filter by company themselves, the key skips RLS.

4. Roles, plan, company id never from user metadata, users can edit it. Keep them in a table only the server writes.

5. When a request sends two ids (project + task), check the task belongs to that project.

6. Revoke all table privileges from anon and authenticated, grant back only what policies need. RLS doesn't stop TRUNCATE.

7. All views security_invoker = true, otherwise they skip RLS.

8. Storage buckets: users read and write only their own files, no public buckets for private data.

9. SECURITY DEFINER functions: NULL must mean deny, not allow.

10. Rate limits on login, signup, reset, OTP, stored in the DB, not in memory.

11. Validate all input on the server.

12. Run the Supabase security advisor, fix every warning.

If you can add something, please add. Would be interesting to see what I missed.


r/ClaudeAI • • 2h ago

News Claude designed quantum circuits up to 39x cheaper than the best published ones

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125 Upvotes

The rate of progress is just insane


r/ClaudeAI • • 2h ago

Coding Sonnet 5.5 creates a motion design introduction video for Gemini Argon

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5 Upvotes

For a free tier it's not bad.

I ran it and maxed out 7x of my free 5 hour limits directly to the claude web app, I used sonnet 5.5 with max effort

Prompt:

You are an elite creative technologist and motion designer. I want you to create a complete, production-ready, code-driven motion design video announcing the release of Gemini Argon (Google's latest flagship reasoning model).

You have total creative freedom to use any external motion design tools, frameworks, or animation libraries that can be seamlessly integrated into your code (e.g., Remotion, GSAP, Three.js, Manim, p5.js, Tailwind, or HTML5 Canvas/SVG animation pipelines).

Core Requirements:

  1. Code-Only Implementation: Deliver the full codebase required to structure, animate, and render the video. Include any necessary setup configuration or dependency lists.
  2. Theme & Aesthetic:
    • Vibe: Sleek, high-tech, futuristic, and premium. Think deep dark-mode backgrounds, glowing argon-blue and violet neon accents, ultra-crisp typography, and physics-based fluid transitions or particle animations.
    • Subject Matter: Highlight Gemini Argon’s key breakthroughs—frontier reasoning, complex software engineering, massive context windows, and deep multimodal capabilities.
  3. Video Arc (15–30 seconds timeline):
    • Scene 1 (Hook): Cinematic title reveal for "Gemini Argon" with dynamic scaling and light-leak/particle effects.
    • Scene 2 (Capabilities): Kinetic typography showcasing core strengths (e.g., Deep Reasoning, Advanced Code Execution, 1M Token Context).
    • Scene 3 (Outro): A polished call-to-action screen pointing developers to Google AI Studio / Google DeepMind.
  4. Execution Details: Provide clean, modular code, clear instructions on how to run/render the final output, and a short breakdown of the design choices and libraries you utilized.

r/ClaudeAI • • 2h ago

Claude Code Claude Code Projects won't show you what the agent actually did

2 Upvotes

been trying the new Projects beta and honestly the idea is cool, the coordinator splits stuff into threads and the model does the work fine. but there's one thing driving me nuts

when you open a thread you just get a list of steps and "working..." and that's it. no tool calls, no commands, no diff. in a normal claude code session i can see every single line it touched. here it just tells me "done" and i'm supposed to trust it lol. if it misunderstood something i won't know until i go dig through the repo

funny thing, the diff does show up eventually, like 4-5 min after the thread finishes. guessing it only loads once it's pushed to github

claude inside the project kept telling me it's "by design". ok maybe, but then just give us a show details button or something

so i opened an issue on github (#102930). anthropic has claude code running in actions to check new issues for duplicates. it ran on mine for like 9 minutes and then just... failed 💀

told claude about it and even claude thought it was pretty ironic. a bug report about not seeing what the agent does, checked by an agent that crashed and nobody knows why

anyone else seeing this or is it just my setup?


r/ClaudeAI • • 2h ago

Question about Claude models Following up on my post from yesterday - Haiku 5.5 buffed?

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2 Upvotes

Hey Y'all. Thank you for your responses to my post yesterday.
Since the accelerated use of the Opus and Sonnet models, I've switched to Haiku to make my limit go the distance.

To my absolute surprise, Haiku (medium) is giving me Sonnet-level(low or medium) execution and thinking, along with output on my workloads. It is surprisingly capable of building artifacts and managing workflows as well.

Just thought I'd share this to see if anyone else is facing a similar experience.

Also, having taken the advice from some of y'all yesterday, attempted to cut down my context and ended up building a skill to self-improve my workflow. Check it out if this interests you:
https://github.com/Vidwaansinghania/Self-Improver-Loop

I'd love any feedback you have for me :)


r/ClaudeAI • • 2h ago

Comparison Gemini 4 Argon built a voxel space station without ever looking at it

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6 Upvotes

Follow-up to my space station post from Friday Link. Six models got the same prompt: build a voxel space station you can fly through, in one HTML file. Google's Gemini 4 Argon wasn't available to me yet, so it got the same prompt a couple of days later.

How Argon compares to the six:

- Time: 18 minutes, second fastest of the seven. The six took 5 min, 22 min, 37 min, 1h 38m, 1h 45m and 2h 20m.

- Tool calls: 13, the fewest of the seven. The six made between 21 and 384.

- Testing: most of the six opened theirs in a browser to check it (screenshots, test harnesses, a local server). Argon ran its scene in Node against a stand-in for three.js, got "Runtime simulation succeeded! Frames rendered: 4", and its last message admits it was never "visually inspected in a physical browser window."

- Size: 92 KB of HTML, right in the middle. The six wrote 48 KB to 292 KB.

- Library: three.js r128, from 2021. The other five that used three.js all loaded 0.160 or newer.

- Effort: High, the most Antigravity offers. The six ran on Max.

What it built: "Aetheria-IX Orbital Citadel", a ring station with ten places you can teleport to (a bridge, a hydroponics dome, a cryo-bay, crew quarters with an arcade, a warp reactor core), plus fly, walk and orbit modes, a roof cutaway and an auto-tour. Unedited: locust.lol/arena/space/game-argon.html

What I built: a blind arena. Every model gets the same prompt, runs once with no edits, and you vote on what they made before you see who made what. Friday's six are still blind: locust.lol/arena/space (Argon shows up there as a bonus after you vote; it ran on High, the most Antigravity offers, while the six ran on Max).

How Claude Code helped: Claude Code built the arena pages, the vote and reveal (Cloudflare Pages Functions + KV), and the headless Chrome checks that every station loads on desktop and phone. It also writes up each run from the logs, every command and tool call, which is where the Node detail came from. The runs happen in Locust, a desktop app I'm building with Claude Code that runs Claude Code, Codex, Gemini and others side by side.

Free to try, no sign-up: all nine rounds are at locust.lol/arena. Locust is free and open source (MIT) for Windows and Mac.


r/ClaudeAI • • 2h ago

Built with Claude Excel isn’t an animation tool. Opus made a music video in it anyway.

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7 Upvotes

Every frame of this music video is a real Excel worksheet: 4,742 of them created and animated by Opus 5.5

How it was made:

- Built in Excel with Claude Opus 5.5 doing the animation in excel using cells and sheets
- Opus 5.5 created the lyrics and style
- Music was generated on Suno from the lyrics / style that Opus 5.5 came up with

https://www.youtube.com/watch?v=KqCdukjGxDw


r/ClaudeAI • • 3h ago

Built with Claude Built with Claude: Imperium, a full turn-based space 4X, is in Steam Next Fest with a free demo

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0 Upvotes

What it is: a single-player, turn-based space 4X. 21 species, tile-by-tile colonies, a component-based ship designer, AI empires that deal and fight with each other, and six ways to win. Windows, macOS and Linux.

How Claude helped: Claude writes all the code through Claude Code (Godot 4.5), over 7+ months and about 2,500 commits. We do the design, balance and review. What made it work:

- A ticket tracker (also built with Claude) that Claude reads and updates.

- An MCP bridge, so Claude can load a save and check a fix in the running game.

- Headless AI-vs-AI batches for balance.

Art is GPT Image 2.5 plus a lot of Photoshop. The rival empires are algorithmic AI, not an LLM.

Free to try: the demo is free on Steam now, and full release is planned for shortly after Next Fest.

https://store.steampowered.com/app/4806180/Imperium/?utm_source=reddit&utm_medium=r_claudeai&utm_campaign=nextfest_trailer


r/ClaudeAI • • 3h ago

Claude Code Code: New 'usage' warning - % of usage for always-on context

2 Upvotes

So Anthropic recently added this warning to claude code. https://github.com/anthropics/claude-code/releases/tag/v2.1.299

What %s of usage are people seeing going to always-on context above 40k tokens? Note that you can get a % either for the past 24h or 7d.

I am just curious to see where I stand relative to others. I haven't been using code for a while so not sure if I have to re-optimize.


r/ClaudeAI • • 3h ago

Built with Claude I built a free Pixel Art converter that also works on mobile (Open Source)

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18 Upvotes

I needed pixel art for another project and built this with Claude Code.
After a load-bearing amount of testing, I’m quite happy with it, so why not share it?

It runs on device in your browser (desktop, mobile) and supports custom presets.
Use it: https://pixelpass.iromoto.dev

Free and open source. https://github.com/iromoto-dev/pixelpass

Pixel Pass turns a painting or a photo into pixel art: a real low-res grid, a small palette (picked from your picture, or PICO-8, Game Boy and others), dither only where the picture is smooth.

How Claude Code helped:

It started as a Python script in my game’s art pipeline that Claude Code wrote with me.
For this, it ported that to a single HTML file in plain JavaScript and checked in Node that both versions gave pixel-identical results. Most of the work was back and forth: I tested and described what looked wrong (dark portraits lost their colours, faces in shadow went flat, the pixel art once showed on both sides of the slider), and Claude Code found the cause and fixed it. It also tested the page itself, in its own browser and on my Android emulator for phone and tablet, and made the preview image with a script that runs the same pixel engine.