Your own AI, made from the tools you choose.
Prometheor is the personal layer under every AI you use: the same memory and project context in Claude, ChatGPT, Cursor and any MCP tool today, your connected tools and the AIs you pick working together next. Owned and run by you, not by a vendor.
Prometheor · your personal layerEvery AI has its own personal layer now. Each one keeps it for itself.
Memory, projects, connected apps, custom instructions: ChatGPT keeps yours in ChatGPT, Claude in Claude, Cursor in Cursor. None of them talks to the others, switching means starting over, and getting your context out is partial at best. Your own context has become the lock-in.
The personal layer every AI has, independent of any one vendor.
Prometheor moves that layer out of each provider and into your hands. Pick whichever AI fits the job; the context stays the same, the projects stay the same, and everything stays yours.
Memory & context.
Tell one tool, every tool knows. Your decisions, preferences and project state live in one Brain: visible, correctable, exportable.
Your tools.
Connect your apps once and use them from every AI you work in, each under its own grant you can revoke. No thousand-app catalog; bring the tools you already use.
The AIs you choose, working together.
Hand a task from one AI to another, let Prometheor suggest which tool fits the job, and keep a receipt for every step, so your projects get finished by the team you assembled.
Built for you — not for a vendor, not for app developers.
Not another assistant.
Prometheor sits under the tools you already use. It connects to Claude Desktop, ChatGPT Desktop, Cursor and other MCP tools, so every one of them works from the same layer, and you keep choosing freely.
Nothing happens without you.
It reads and saves memory only when you ask. Each tool gets its own access you can revoke in under a minute. And a memory can never turn into an instruction, a permission or a credential — by design.
Yours to keep.
Every entry is visible and editable. Your Brain is encrypted, and you can export all of it — with history and sources — or delete it completely. No lock-in.
Where Prometheor is different.
| Built-in personalizatione.g. in ChatGPT or Claude | Developer memory enginesAPIs for apps you build | Prometheor | |
|---|---|---|---|
| Works across vendors — Claude, ChatGPT, Cursor | No, one vendor only | Only inside the apps you build | Yes |
| Made for you, not for app developers | Yes | No | Yes |
| Reads and saves only when you ask | Automatic by default | Depends on the app | Yes |
| Each tool has its own access you can revoke | — | Often one shared key | Yes, in under a minute |
| You can read and edit every entry | Yes, inside that app | Depends on the app | Yes, in one place |
| A memory can never become an instruction | — | — | Guaranteed by design |
| The AIs you choose work together on one project | Only that vendor’s own agents | — | Planned, across vendors |
| Export everything, with history and sources | Partial or one-way | Backups, not a portable format | Yes, documented format |
Categories, not specific products, based on public documentation as of September 2026. “Planned” marks what Prometheor does not ship yet.
Ask any tool. Get the same answer.
Before you start, ask your tool to check Prometheor. It answers with what it remembers about this project — the same in Claude, ChatGPT or Cursor.
Claude Desktop · asks PrometheorWhat should I know about this project?
PrometheorI remember 3 things about Payments Rebuild:
- Stripe only — PayPal was retired in May.
- Migrations run with
pnpm db:migrate, never raw SQL. - Staging is a Supabase branch, not production.
Set up once. Use it everywhere.
Connect a tool.
Add Prometheor to Claude Desktop, ChatGPT Desktop or Cursor with one link. Each tool gets its own access; disconnect any of them at any time.
Tell it what to remember.
Remember: we use Stripe, not PayPal.
Prometheor keeps it for this project — with every version, so you can correct it later.Ask before you start.
What do you know about this project?
Every connected tool gets the same answer, the moment you ask.
Your AI. Your projects. Your rules.
Prometheor is in early access, by invitation: memory and context first, tools and orchestration next. Tell us what you work on and which AIs you use.
Request access by emailAlready invited? Sign in to your Brain · or write to info@prometheor.com