待翻譯：Show HN: Lethe is a portable identity layer – user consented

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Lethe — your work, understood Free beta · no card One identity. Every AI. Every AI you use is quietly building its own half-right picture of you. Lethe is the one place your identity actually lives — and every AI reads from it, with your permission. See what it finds — no account →Create your Lethe The problem Every AI knows a different you. You’ve explained yourself a hundred times — to ChatGPT, to Claude, to Cursor, to every new tool. Each one keeps a fragment. None of them keep the same you, and none of it is yours to take with you. ChatGPT knows how you write. Claude knows one project. Cursor knows your codebase. Gemini knows last week. The next tool knows nothing at all. None of them know the same you. That’s the problem. The shift Lethe is where your identity lives. One understanding of you — how you think, decide, work, and what you care about — that you own, not any AI company. It doesn’t live inside a model. It lives with you, and the models come to it. How it works Three steps, then it keeps itself current 01 Connect what you already produce Import a ChatGPT, DeepSeek or Grok export, drop in documents and photos, or connect Gmail and Calendar read-only. 02 Lethe derives understanding Decisions, goals, timelines, recurring problems and open conflicts — each with the quote it came from. Nothing asserted without something behind it. 03 Every AI starts with you Your workspace, your project chat, and any AI you connect all open already knowing the same you — instead of starting from a blank page. Connected AI Every connected AI starts with the same you Point Claude, Cursor, or any MCP client at Lethe and it opens already knowing your projects, your decisions, your context — with the exact confidence Lethe has in each, so a guess arrives as a guess. Teach it a skill once — how you file an expense report, how you like a PR described — and every connection follows your way instead of inventing its own. Say “build X” and it starts from your saved plan for X, not from a blank page. You decide what each one may see, and every read is written to a log you control. Trust by design An identity layer only works if you trust it more than what it connects to. So the guarantees aren’t features bolted on afterward — they’re the foundation everything else is built on. Nothing to enter A vault nothing else can reach Your most private things go in the Vault — encrypted on your own device, opened only by a passphrase we never store. It runs on a model on your machine, and no connected AI can ever see inside it. Evidence, not vibes Every claim carries its proof Everything Lethe believes about you is paired with the exact line it came from — so you can judge it, not just trust it. And names are replaced with pseudonyms before anything is stored. Leave whenever you want, with everything Lethe keeps a derived understanding, not a transcript of everything you said — and you can export all of it or delete all of it in two clicks. No lock-in is the point. Minimized before it leaves your device Privacy modes strip detail out of a request before it ever reaches a model. You permission every read Choose what each connected AI may see, revoke it instantly, and see every access in the log. Where this goes Today it personalizes your AI. It’s becoming the identity layer between you and every AI. An email address stopped being just for email. Your Lethe identity won’t stay just for chat. What we’re building toward: Portable Lethe ID — one identity any app can request, and you approve exactly what it gets. Permission profiles — a separate face for work, health, money — each sharing only what you allow. Identity graph — the people, projects and context around you, connected. Agent delegation — hand an AI a task and let it act with your context, inside your rules. Teams — a shared understanding across the people you work with. Direction, not a shipped feature list — today’s Lethe is the first step, and it already works. Stop rebuilding yourself for every AI. Free while in beta. No card, no plan to pick. Create your Lethe