memlink

Your Claude memory, everywhere. memlink syncs Claude Code's memory files from your PC to an encrypted cloud store, and serves them to Claude on your phone (or any MCP client) — even while the PC is off. Whatever the phone writes lands back on your disk as plain .md files.

Citește în română.

   PC (Claude Code)                    cloud                       phone (Claude app)
   ~/.claude/**/*.md   ──encrypt──▶  memlink server  ◀──MCP────  memory_search / write
         ▲                            (zero plaintext)                    │
         └───────────── memlink watch pulls changes back ◀───────────────┘

Quickstart

npx memlink-cli init --server https://memlink-omega.vercel.app --email you@example.com
# prompts for a passphrase (min. 12 characters, twice) - it never leaves your machine

npx memlink-cli watch
# watches your Claude memory folders, pushes changes, pulls what other devices wrote

Then connect Claude:

• Phone / claude.ai: Settings → Connectors → Add custom connector → URL https://memlink-omega.vercel.app/mcp. Claude opens memlink's authorization page: enter your email and passphrase (the key is derived in your browser; the passphrase is never sent), and the connector is live — with memory_search, memory_get, memory_write, memory_list.

• Claude Code (another machine): npx memlink-cli login --server ... --email ..., then claude mcp add --transport http memlink https://memlink-omega.vercel.app/mcp --header "Authorization: Bearer <output of memlink token>".

memlink sync runs one push/pull round if you prefer manual control.

Related MCP server: claude-memory

The security model — honest, both sentences

"My database is useless if stolen, and I never store the key. The code is public — verify it."

• Notes are encrypted on your machine: Scrypt key derivation + XChaCha20-Poly1305 (@noble/hashes, @noble/ciphers — audited libraries). File paths are encrypted too. The server stores zero plaintext and never stores your key.

• The limit, stated plainly: this is NOT end-to-end encryption. To answer an MCP client the server decrypts in RAM per request — Anthropic's cloud receives plaintext in responses, otherwise Claude would have nothing to read. The key transits inside your token and lives in server RAM only for the duration of a request.

• OAuth 2.1 (PKCE + dynamic client registration), fully stateless: access tokens are sealed payloads; rotating the server's seal key revokes everything at once.

• More plainly-stated limits: the derived key sits cleartext in ~/.memlink/credentials.json (0600 on POSIX; unprotected on Windows), and memlink token prints a secret granting full access to your corpus — treat both like passwords.

Conflicts: nothing is ever lost

Last-write-wins per note, with optimistic versions. The losing version is always preserved in ~/.claude/memory-conflicts/ — same for notes deleted from the cloud (moved there, not destroyed) and for anything suspicious (undecryptable or path-escaping notes are quarantined, never written over your files).

Self-hosting

The server is a single Vercel function backed by Supabase Postgres:

1. Create a Supabase project (or reuse one) and run supabase/migrations/0001_init.sql — optionally inside a dedicated schema, then expose it in PostgREST and set MEMLINK_DB_SCHEMA.

2. Set Vercel env vars: SUPABASE_URL, SUPABASE_SERVICE_ROLE_KEY, MEMLINK_SEAL_KEY (64 random bytes, base64 — rotating it revokes all tokens), MEMLINK_BASE_URL (your deployment URL), optionally MEMLINK_DB_SCHEMA.

3. vercel deploy --prod from the repo root (the build bundles everything).

Development

npm workspaces: packages/shared (crypto + wire format), packages/server (Hono API + MCP + OAuth), packages/cli. npm test (vitest), npm run typecheck. The CLI speaks ten languages (en native + ro, da, de, fr, es, it, pt, nl, pl) via MEMLINK_LANG or your system locale.

License

MIT — see LICENSE.