Memoir

npx memoir-cli

One command. No install, no config, no API keys. Claude Code on your Mac, Cursor on your laptop, Copilot at the office — one memory follows you across every tool and every machine. Cloud sync is end-to-end encrypted with a key only you hold — memoir's servers can't read what you sync.

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What it does

Your coding tools are starting to remember you — Claude Code, Cursor, and Copilot all ship built-in memory now. But that memory is trapped: one tool, one machine, one vendor's format. Switch from Cursor to Claude Code, or open a different laptop, and your AI is a stranger again.

memoir is the MCP memory server that breaks it out. One memory, shared across every tool and synced to every machine — E2E-encrypted in the cloud, plain readable markdown on your disk. Your AI searches, saves, and recalls context automatically, everywhere you work.

It's built on an open, published format — the memoir format, v0.1.1 — so your AI's accumulated context is never trapped in this tool either. Six entry types, normative merge semantics, JSON Schemas, and a validator (npx memoir-cli validate). Any tool can implement it; critique welcome.

you: how does auth work in this project?

  memoir_recall("auth setup architecture")
  Found 3 memories matching "auth setup architecture":

  ── 1. Claude CLI / memory/reference_auth_flow.md ──
     reference · How authentication works — JWT + refresh, middleware location, state choice
     Server components must call getUser(), never getSession(). The session
     cookie name is derived from the Supabase URL host, so previews differ.
     ⋯
     Chose Zustand over Redux for auth state (decided March 12).

claude: Based on your previous sessions: this project uses JWT auth
  with refresh tokens, the middleware is in src/middleware/auth.ts,
  and you chose Zustand over Redux for auth state (decided March 12).

No re-explaining. memoir remembered — and handed back the passage, not a file header.

Recall ranks by how well a file covers all your words (aliases, names, and descriptions weigh more than prose), folds plurals/-ing/-ed, prefix-matches from 4 characters (auth → authentication), and caches parses so a long-lived session doesn't re-read your disk on every question. It does not do semantic matching — that's what aliases: in the frontmatter is for: the model that saves a memory writes down what else it might be called, and recall weights that field heaviest. Try it from the terminal: memoir recall "what you'd ask" shows exactly what your AI would see.

How it's different

Native memory and the other memory tools each give you part of this. memoir is the only one that gives you all of it:

	Cross-tool	Cross-machine sync	Zero-knowledge encrypted
memoir	✅	✅ free	✅
Claude Code / Cursor native	❌ one tool	❌ one machine	❌
claude-mem	✅	❌ local only	❌
basic-memory	✅	💲 paid cloud	❌
mem0 / OpenMemory	✅	💲 paid cloud	❌

Native memory is locked to one tool on one machine. The others keep your memory in plaintext, or put cross-machine sync behind a paywall. memoir is the only one that does all three — every tool, every machine, encrypted under a key only you hold — for free. _{(Based on public docs, June 2026.)}

Quick start

npx memoir-cli

That's it. memoir detects your AI tools, configures MCP, and activates memory. No global install needed.

Your AI gets 15 memory tools:

MCP Tool	What it does
memoir_recall	Search across all your AI memories — returns matched passages, ranked by coverage
memoir_remember	Save context for future sessions (pass aliases so it's findable under other names)
memoir_list	Browse all memory files by tool
memoir_read	Read a specific memory in full
memoir_consolidate	Analyze memories for duplicates, staleness, and bloat
memoir_status	See which AI tools are detected
memoir_profiles	Switch between work/personal
memoir_set_goal	Set the current session goal (pinned into CLAUDE.md)
memoir_add_next	Add a next action to the current session
memoir_complete_next	Mark a next action as done
memoir_note	Record a decision with its rationale
memoir_ask	Capture an open question for later
memoir_session	Show goals, next actions, decisions, and recent sessions
memoir_why	Look up why a past decision was made
memoir_forget	Retract a decision — permanent tombstone on every machine; purge redacts the text

Why memoir

Your AI forgets everything between sessions. You re-explain your codebase, your conventions, your decisions — every time.

memoir fixes that. Tell Claude something once and Cursor knows it too — your memory syncs between tools, backs up to the cloud, and restores on any machine. When it piles up, memoir consolidate cleans house: finds duplicates, flags stale context, and can use AI to merge and prune.

11 tools supported: Claude Code, Cursor, Windsurf, Gemini CLI, GitHub Copilot, OpenAI Codex, ChatGPT, Aider, Zed, Cline, Continue.dev.

Sync across machines

memoir push       # back up AI memory + workspace + session
memoir restore -y # restore on any machine

Push syncs AI memory, cursorrules, session context, workspace (git repos + uncommitted work), and project configs. E2E encrypted with AES-256-GCM.

Translate between AI tools

memoir migrate --from chatgpt --to claude
# AI-powered — rewrites conventions, not copy-paste

memoir migrate --from chatgpt --to all
# Translate to every tool at once

Consolidate memories

memoir consolidate          # scan for duplicates, stale files, bloat
memoir consolidate --smart  # AI-powered analysis (finds contradictions + merge candidates)
memoir consolidate --apply  # interactively clean up

Over time, memories pile up across tools. Consolidate finds exact and near-duplicates, flags files untouched for 60+ days, and catches contradictions where you told Claude one thing and Cursor another. With --smart, Gemini Flash does a semantic pass and suggests intelligent merges.

Cloud sync

memoir login
memoir cloud push      # encrypted cloud backup
memoir cloud restore   # restore from any version
memoir history         # view backup versions
memoir share           # create encrypted shareable link

All Commands

Command	What it does
memoir activate	Enable auto-recall in this project
memoir deactivate	Remove memoir from this project
memoir push	Back up AI memory + workspace + session
memoir restore	Restore everything on a new machine
memoir status	Show detected AI tools
memoir migrate	Translate memory between tools via AI
memoir snapshot	Capture current coding session
memoir resume	Pick up where you left off
memoir encrypt	Toggle E2E encryption
memoir profile	Manage profiles (personal/work)
memoir cloud push	Back up to memoir cloud
memoir cloud restore	Restore from memoir cloud
memoir share	Create encrypted shareable link
memoir consolidate	Find duplicates, stale memories, and bloat
memoir recall	Search memory exactly the way your AI does — see what it would be handed
memoir why	Look up decisions: what, why, what was rejected
memoir forget	Retract a decision (--purge to redact a leaked secret in place); refuses if ambiguous
memoir validate	Check session state + entry files against the format spec
memoir doctor	Diagnose issues
memoir diff	Show changes since last backup
memoir view	Preview what's in your backup
memoir update	Self-update to latest version

Security

• E2E encryption — AES-256-GCM with scrypt key derivation
• Secret scanning — API keys, tokens, passwords auto-redacted before sync
• Local MCP server — runs on your machine, no data sent externally
• Zero-knowledge cloud — encrypted before upload

Links

• Website: memoir.sh
• npm: memoir-cli
• Issues: GitHub Issues
• Contributing: CONTRIBUTING.md

MIT Licensed