Tephra by Obsidian Metrics · Premium · $399 seat
Your AI tools each start from zero. Tephra is one memory they share.
Tephra is one memory for every AI you connect. Our setup page lists Claude, ChatGPT, Cursor, VS Code, Gemini CLI and other apps that support MCP. Each one recalls from Tephra and writes to it as it works, so switching tools, chats or accounts picks up where you left off. Your memories are tied to your account and aren't visible to other members.
What it does
- Add and keep what you know. Type a memory or upload a file. Each memory is filed in one of ten regions. You can edit it, tag it, pin it, set its importance, restore an earlier version, or delete it.
- Search it and open it. Recall search finds what you saved. The 3D brain shows your memories by region, and each of the ten regions opens its own list.
- Review it so it sticks. Daily Review makes cards only from memories you wrote, and the Knowledge Map shows which areas are strong or fading. The Tutor quizzes you on a topic from your own memories, up to 40 turns a day.
How to get Tephra
Tephra is part of Premium — $19/mo at the member rate through the Obsidian Metrics community, or $29/mo direct from the website. Or buy the seat outright for $399 once: a one-time seat, with no subscription. See membership and pricing.
Frequently asked questions
What is Tephra?
Tephra: one memory your AI tools share. Tephra is one memory for every AI you connect. Our setup page lists Claude, ChatGPT, Cursor, VS Code, Gemini CLI and other apps that support MCP. Each one recalls from Tephra and writes to it as it works, so switching tools, chats or accounts picks up where you left off. Your memories are tied to your account and aren't visible to other members. You can also add memories yourself, search them, open them in a 3D brain, and review them with cards and a tutor. It is a tool, not a source of advice.
How do I connect my AI tools to Tephra?
Open the Connect page in Tephra (tephra.obsidian-metrics.com/connect) and add Tephra to the AI you use. An advanced option with an AI key is there for tools that need one.
How much does Tephra cost?
Two ways to get it. As a subscription, Tephra is part of Premium — $19/mo at the member rate through the community, or $29/mo direct from the website. Or buy the seat outright for $399 once: a one-time seat for Tephra, with no subscription.
How is Tephra different from Onyx?
Tephra is the memory: the place where what you save is kept, searched and reviewed. Onyx is the assistant you ask in plain language. Onyx usage is metered. Many people run both, but each is sold on its own.