# Kasti

> Kasti is a notes app that finds how your thoughts connect. You write a thought, Kasti looks through what you wrote before, and when it finds a real link it shows you both thoughts and says why they connect. You decide whether to keep it.

Kasti stores notes exactly as written and only ever compares notes inside one person's account. Connections are suggestions the person accepts, rejects or corrects. Every note is private: nothing a person writes in Kasti is public or searchable from this site.

Pricing: a free trial with 25 connected thoughts and no credit card, then Pro at $6 a month or $60 a year.

## Pages

- [How Kasti works](https://kasti.app/how-it-works.md): Write a thought and Kasti finds a related one in your past notes, says why they connect, and lets you decide. Here is how it works, step by step.
- [Pricing](https://kasti.app/pricing.md): Start Kasti free with no credit card. Pro is $6 a month or $60 a year, with 1,000 connected thoughts a month, search by meaning and MCP.
- [Use Kasti from your AI tools](https://kasti.app/ai-tools.md): Connect Kasti to Claude Code, Codex, Cursor or T3 Code over MCP. Save thoughts and find connections without leaving your work. Part of Kasti Pro.
- [What is a Zettelkasten?](https://kasti.app/zettelkasten.md): A Zettelkasten is a note system built on one idea per note and links between notes. Learn how it works, why the linking is hard, and how Kasti does it for you.
- [Privacy](https://kasti.app/privacy.md): What Kasti collects, how your notes are used, who handles them, and how to export or delete them. Every AI request asks for zero data retention.

## For agents

- MCP server: https://kasti.app/mcp (Streamable HTTP, OAuth sign-in, needs Kasti Pro)
- [Server card](https://kasti.app/mcp/server-card)
- [AI catalog](https://kasti.app/.well-known/ai-catalog.json)

## Optional

- [Everything above in one file](https://kasti.app/llms-full.txt)