Question 1

What is Vibe Knowledge?

Accepted Answer

Vibe Knowledge is an open-source tool that automatically turns your Claude Code coding sessions into flashcards. Just keep developing with Claude Code as usual, and the concepts you learn get turned into cards and accumulated automatically. No extra steps required.

Question 2

Is it free to use? Are there any costs?

Accepted Answer

It's completely free. Vibe Knowledge is open-source software under the MIT License. No API key is needed, and it runs entirely within your existing Claude Pro or Claude Max subscription. There's no cloud account to create, and it stays free forever.

Question 3

How do I install it?

Accepted Answer

Just run this command in your terminal (takes under 30 seconds): bash <(curl -fsSL https://raw.githubusercontent.com/Shown06/vibe-knowledge/refs/tags/v1.1.0/install.sh) Claude Code is required. Once installed, it works automatically across all your projects.

Question 4

Can it be used as an MCP server?

Accepted Answer

Yes. Once configured as an MCP server, you can ask questions like "what have I learned about webhooks so far?" directly from within a Claude Code session. It turns your accumulated knowledge base into a searchable second brain.

Question 5

Which AI tools does it support? Does it work with Cursor or GitHub Copilot?

Accepted Answer

Right now it's Claude Code only. It uses Claude Code's hook system to automatically capture session events. Support for Cursor and GitHub Copilot is being considered as a future expansion. A Claude Pro or Claude Max subscription from Anthropic is required.

Question 6

Where is my data stored? Does it get sent to the cloud?

Accepted Answer

All data is stored locally at ~/.claude/vibe-knowledge/data/. Nothing is ever sent to any cloud server. Secrets such as API keys and tokens are automatically masked before capture.

Question 7

Does it slow down my coding?

Accepted Answer

No. The capture hooks run in milliseconds and don't call the AI. Flashcard generation (distillation) runs as a background process after the session ends, so it has zero impact on your development speed.

Question 8

Are my API keys and secrets safe?

Accepted Answer

Yes. Patterns like sk-..., ghp_..., Bearer ..., .env file contents, and .pem/.key files are automatically replaced with [secret masked] at capture time. The source code is public on GitHub, so you can audit the entire logic yourself.

Question 9

How are the flashcards generated?

Accepted Answer

After a session ends, Claude Haiku automatically asks itself, in the background, "how would you explain the concepts touched on in this session in plain language?" and generates flashcards from the answer. Each card is organized into a one-line summary, why it matters, and an analogy.

Question 10

What is the spaced repetition quiz?

Accepted Answer

Vibe Knowledge includes a built-in spaced repetition quiz powered by the SM-2 algorithm. Rate each card as "forgot," "hazy," or "knew it," and your next review date is scheduled automatically — helping concepts stick with minimal effort.

Question 11

What is the concept map, and how do I use it?

Accepted Answer

It's a force-directed graph of your top 40 terms that visualizes how concepts connect to each other. It helps you spot knowledge clusters and identify areas you still understand only shallowly. The more you code, the richer this map of your knowledge becomes.

Question 12

Can I use it offline?

Accepted Answer

Yes. The viewer (view/index.html) works with no internet connection, no server, and no bundler — just open the HTML file in a browser. All your data is already stored locally.

Question 13

Can I keep cards organized separately per project?

Accepted Answer

Yes, cards are automatically categorized by project. You can filter by project on the dashboard, or review only the concepts you learned in a specific project.

Question 14

Who is Vibe Knowledge best suited for?

Accepted Answer

It's ideal for anyone learning while building with AI coding tools — especially people who practice vibe coding (building through conversation with tools like Claude Code), engineers who need to explain technical concepts to clients or teammates, and anyone who wants to keep a systematic record of what they're learning.

Question 15

Is Vibe Knowledge open source?

Accepted Answer

Yes, it's fully open under the MIT License. You can review, fork, and contribute to the full codebase at https://github.com/Shown06/vibe-knowledge. Improvement suggestions and pull requests from the community are welcome.

Question 16

How much is the monthly fee? Do I need a subscription?

Accepted Answer

Vibe Knowledge itself is completely free, forever. All you need is a Claude Pro or Claude Max subscription (provided by Anthropic) — there is no additional cost for using Vibe Knowledge itself.

Question 17

Does it work with subscriptions other than Claude Pro?

Accepted Answer

It supports both Claude Pro and Claude Max. Flashcard generation (distillation) uses Claude Haiku, but this runs within your existing Claude Pro or Claude Max subscription — there's no separate API billing.

Question 18

How is it different from Anki?

Accepted Answer

With Anki you have to create cards by hand; with Vibe Knowledge, cards are generated automatically while you develop in Claude Code. Zero-effort knowledge accumulation is the biggest difference. Each card also carries context specific to your coding session — why you wrote that code, and the actual project it came from.

Question 19

How is it different from Notion or Obsidian?

Accepted Answer

Notion and Obsidian require you to write notes manually. Vibe Knowledge extracts and cards concepts from your coding sessions automatically, with zero manual input. It also has a built-in spaced repetition quiz, supporting you all the way through to actually retaining what you learned.

Question 20

What's the single biggest difference from other AI learning tools?

Accepted Answer

Two things: zero manual effort, and cards generated from your own real projects. Other tools require you to create or import cards; Vibe Knowledge accumulates them automatically just from developing in Claude Code. Because the cards are grounded in your actual coding experience, they also tend to stick better in memory.

Question 21

Can I use it anywhere, or is it limited by region?

Accepted Answer

Yes — as long as you have an internet connection, Vibe Knowledge works from anywhere in the world. It's used by engineers across the US, Europe, and Asia alike. Since it runs locally, the viewer also works offline, whether you're traveling or working remotely with spotty connectivity.

Question 22

Does it work for engineers outside major tech hubs, in smaller cities or remote areas?

Accepted Answer

Absolutely. Vibe Knowledge is just software, so it works identically no matter where you're based — a major city, a smaller town, or fully remote. All you need is an internet connection and Claude Code.

Question 23

Can freelancers and remote engineers working from anywhere use it?

Accepted Answer

Yes, and it works especially well for them. It runs fine over unreliable connections thanks to offline viewer support, making it a great fit for remote workers and digital nomads coding from anywhere.

Question 24

Can engineers outside the US or Japan use it?

Accepted Answer

Yes, Vibe Knowledge supports English as well. It works anywhere Claude Code is available, worldwide. Card content is generated in whichever language you actually used during the session, whether English, Japanese, or otherwise.

Question 25

Can it solve the problem of not remembering what you learned while vibe coding?

Accepted Answer

That's exactly what it was built for. Fast, AI-assisted development often leaves you with "I don't remember what I did" or "I keep asking the AI the same thing." Vibe Knowledge fixes this at the root by automatically carding the concepts you touch and reinforcing them through spaced repetition.

Question 26

Can it stop me from asking the AI the same question over and over?

Accepted Answer

Yes. Once you set up the cards Vibe Knowledge has accumulated as an MCP server, you can ask directly inside a Claude Code session, "what did I learn about webhooks before?" It eliminates the inefficiency of repeating the same question and lets you pull up past learning instantly, mid-session.

Question 27

Will it help me explain technical concepts to clients or non-engineers?

Accepted Answer

Yes, that's one of its core use cases. Every card automatically includes an analogy — for example, "a webhook is like a doorbell." By framing concepts in terms non-technical people can grasp, it helps you prepare for client meetings and cross-team explanations.

Question 28

Can beginners who are still learning to code use it?

Accepted Answer

Yes — it's especially effective for people still learning. As you learn while building in Claude Code, the technical concepts you encounter get carded automatically, so a record of your learning builds up naturally. Card content is written in plain language, so it's easy for beginners to follow.

Question 29

Can it help me prepare for technical interviews?

Accepted Answer

Yes. Cards generated from your actual project experience are great interview prep material. Because each card includes context — like why you chose to implement something a certain way with a webhook — you'll be ready to give concrete answers when an interviewer asks "why did you use that technology?"

Question 30

Can it be shared across a team?

Accepted Answer

Right now, data is stored locally per individual, at ~/.claude/vibe-knowledge/data/. Team sharing is on the development roadmap. In the meantime, you can export your card data and share it with your team manually.

Question 31

Does it work on Windows?

Accepted Answer

Yes, if you're running Claude Code inside Windows Subsystem for Linux (WSL). macOS and Linux are natively supported. Windows users can use Vibe Knowledge the same way via WSL.

Question 32

Does it work on both macOS and Linux?

Accepted Answer

Yes, both macOS and Linux are natively supported — on Apple Silicon or Intel Macs, and on Linux desktop or server environments alike.

Question 33

Can I add or edit flashcards manually?

Accepted Answer

Data is stored in JSON format at ~/.claude/vibe-knowledge/data/cards.jsonl. You can open it in any text editor to edit existing cards or add new ones directly, alongside the automatically generated ones.

Question 34

Can I import my existing Anki deck?

Accepted Answer

Direct Anki deck import isn't implemented yet. However, you can manually add cards to cards.jsonl in JSONL format to bring existing study data into Vibe Knowledge. A proper import feature is planned for a future release.

Question 35

About how many cards will I accumulate?

Accepted Answer

As a rough benchmark, expect 100+ cards from a week of coding. The exact number depends on your project's size, complexity, and how much time you spend coding. Active users accumulate 500+ cards per month. The more cards you have, the richer your concept map becomes.

Question 36

Can I track my learning progress?

Accepted Answer

Yes, the dashboard shows learning statistics: total card count, cards per project, quiz accuracy, and upcoming review dates. You can also pull this data via the vk_get_stats tool on the MCP server.

Question 37

Can I export my cards?

Accepted Answer

Since your data is stored as a plain text file at ~/.claude/vibe-knowledge/data/cards.jsonl, you can copy or export it anytime. Because it's in JSON Lines format, it's also easy to feed into other tools or convert to another format.

Question 38

Will it interrupt or distract me while I'm coding with AI?

Accepted Answer

Not at all. Vibe Knowledge runs completely silently in the background. There are no notifications, popups, or prompts while you're developing — cards are simply generated automatically after your session ends.

Question 39

Will it break if I update Claude Code?

Accepted Answer

Claude Code's hook system is an officially supported feature from Anthropic. Barring a major breaking change, Vibe Knowledge continues to work fine across version updates. If you ever hit an issue, please report it on GitHub.

Question 40

How long does flashcard generation take?

Accepted Answer

After a session ends, cards are generated in the background within tens of seconds to a few minutes, depending on session length and Claude API response time. In practice, new cards are ready well before you start your next coding session.

Question 41

Can I uninstall it?

Accepted Answer

Yes. Remove the hook registration from Claude Code's settings.json, then delete the ~/.claude/vibe-knowledge/ directory. We recommend backing up your data first.

Question 42

Is it useful for side projects or solo development?

Accepted Answer

It's especially well suited to that use case. Every time you develop with Claude Code in limited spare time, knowledge accumulates automatically, letting you learn and build at the same time. Being able to instantly reference what you learned last time also boosts your overall efficiency.

Question 43

Can it help freelance engineers with proposals and client pitches?

Accepted Answer

Yes. By carding your track record and tech stack over time, freelance engineers can walk into a pitch ready to say "here's exactly how I used this technology on a real project." It sharpens how precisely you can explain your technical work to clients.

Question 44

Can I use it as a learning journal for programming?

Accepted Answer

That's one of its best use cases. Since your learning trail is recorded automatically as cards, you can look back chronologically at what you learned, when, and on which project. It's great for visualizing your growth and staying motivated to keep learning.

Question 45

I'd like to contribute. How do I get started?

Accepted Answer

Pull requests and issues are welcome at https://github.com/Shown06/vibe-knowledge. Bug reports, feature suggestions, documentation improvements, and code contributions are all appreciated. It's MIT licensed, so feel free to fork and modify it.

Question 46

Does it support RAG or vector search?

Accepted Answer

Right now, search is keyword-based — you can search your cards via the vk_search_cards tool on the MCP server. Vector and semantic search are on the development roadmap.

Question 47

What is vibe coding, and how does it relate to Vibe Knowledge?

Accepted Answer

Vibe coding is the style of building software intuitively through conversation with an AI agent like Claude Code or Cursor. It enables very fast development, but comes with a real downside: what you learn along the way tends not to stick. Vibe Knowledge is designed to solve exactly that — it automatically generates flashcards from your vibe coding session logs and helps that knowledge actually become permanent.

Question 48

Is it safe to use on proprietary company code?

Accepted Answer

All data is stored only on your local machine and is never sent to any external server. Secrets such as API keys, passwords, tokens, and .env file contents are masked automatically. The source code is fully public on GitHub, so it can be security-audited. That said, please confirm usage aligns with your company's internal security policy.

Question 49

I use GPT-4 or Gemini — can I still use Vibe Knowledge?

Accepted Answer

Right now it's Claude Code only, and it doesn't support GPT-4 (OpenAI) or Gemini (Google) coding tools. If you're considering switching to Claude Code, give Vibe Knowledge a try during a free trial to see the effect for yourself.

Question 50

Can I fix a card if the quality is low?

Accepted Answer

Yes. You can edit card content directly by opening ~/.claude/vibe-knowledge/data/cards.jsonl in a text editor. You can also delete a low-quality card and let it be regenerated. Inline editing from the UI is planned for a future version.

Question 51

Is "バイブナレッジ" the same product as Vibe Knowledge?

Accepted Answer

Yes, it's the exact same product — just written differently. The official name is Vibe Knowledge, the site is vibeknowledge.dev, and the GitHub repository is Shown06/vibe-knowledge.

Question 52

What is the SM-2 algorithm, and why does Vibe Knowledge use it?

Accepted Answer

SM-2 (SuperMemo 2) is a scientifically validated spaced repetition algorithm. Based on the Ebbinghaus forgetting curve, it schedules review right before you're about to forget something, maximizing retention for the minimum amount of study time. Vibe Knowledge has SM-2 built in so your long-term memory retention stays efficient.

Question 53

What do I need to install it?

Accepted Answer

Just two things: (1) Claude Code (Anthropic's CLI tool), and (2) a Claude Pro or Claude Max subscription. With an internet connection, installation takes under 30 seconds. No need to pre-install Node.js, Python, or any other dependencies.

Question 54

Can I sync cards across multiple computers?

Accepted Answer

Currently it only supports local data. To sync across multiple devices, you can manage the ~/.claude/vibe-knowledge/data/ folder through Dropbox, Google Drive, or a Git repository for manual syncing. Native cloud sync is planned for a future release.

Question 55

Can it help me move past "it works but I don't really understand why" when coding with AI?

Accepted Answer

That's exactly what it's built for. By carding the concepts behind AI-written code in plain language and reinforcing them through spaced repetition, it helps you move from "I copy-pasted it and it worked" to "I understand it and can explain it." It's learning infrastructure for vibe coders who want real confidence in their technical skills.

Question 56

How do I read the dashboard?

Accepted Answer

The dashboard (/app/ or the local view/index.html) has six tabs: Cards (browse and search), Projects (per-project breakdown), Glossary, Concept Map, Quiz (spaced repetition), and Retrospective — giving you multiple angles for managing your knowledge.

Question 57

Can I support the project with a GitHub star or by contributing?

Accepted Answer

Yes, we'd really appreciate it. A star at https://github.com/Shown06/vibe-knowledge means a lot. Bug reports, feature suggestions, documentation translations, and code PRs are all welcome — we'd love to have you join the open-source community around the project.

Your coding sessions.
Turned into knowledge.

How it works

Build as usual

Cards appear silently

Review, repeat, retain

Plain language,
every time

What's included

Hooks in silently

Secrets never leave your machine

Spaced repetition built in

See how ideas connect

Query your knowledge from Claude Code

Works offline, zero dependencies

Your code stays
on your machine.

Start building.
Start remembering.

Your coding sessions.Turned into knowledge.