Memento

Name: Memento
Author: veerps57

by veerps57version 0.9.2i★ –iRuns on your computer

Registry namecom.runmemento/memento

Install

Overview

Description from the maker (original English)

Local-first, LLM-agnostic memory layer for AI assistants.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi0 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Search & AI memory

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 0 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: MEMENTO_DB

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "memento": {
      "command": "npx",
      "args": [
        "-y",
        "@psraghuveer/memento",
        "serve"
      ],
      "env": {
        "MEMENTO_DB": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add memento --env MEMENTO_DB=your-value -- npx -y @psraghuveer/memento serve

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "memento": {
      "command": "npx",
      "args": [
        "-y",
        "@psraghuveer/memento",
        "serve"
      ],
      "env": {
        "MEMENTO_DB": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "memento": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@psraghuveer/memento",
        "serve"
      ],
      "env": {
        "MEMENTO_DB": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

MEMENTO_DB env
Absolute path to the SQLite database file. Defaults to $XDG_DATA_HOME/memento/memento.db (typically ~/.local/share/memento/memento.db on POSIX).

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

! Caution
Maker matches the repo
The publisher (runmemento.com) is not the repo owner (veerps57); someone else may have listed it
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Search & AI memoryi

More stars than 0% of the other 5650 servers in this category
Published to the registry more recently than 13% of the other 5650 servers in this category
Basic checks equal to or better than 28% of the other 5650 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Memento safe?

It passed 0 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.9.2) reached the registry 6 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Context7, Codebase Memory, Exa

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Context7

by upstash

Feeds AI the latest docs for libraries and frameworks before it answers, so code it writes does not use outdated, removed functions.

Computer or cloud★ 64,224MITUpdated yesterday

Install

Codebase Memory

by DeusData

Codebase knowledge graph for AI agents — 162 languages, sub-ms queries, 99% fewer tokens.

Runs on your computer★ 48,148MITUpdated 21 days ago

Install

Exa

by exa-labs

Connect AI agents to Exa for web search, content fetching, and multi-step research.

Runs in the cloud★ 5,213MITUpdated last month

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

A local-first, LLM-agnostic memory layer for AI assistants runmemento.com

Every AI session starts the same way: re-explaining your preferences, your project's conventions, the decisions you made last week, the dead-ends to avoid. Each tool solves this in its own siloed way (CLAUDE.md, .cursorrules, copilot-instructions.md, ChatGPT Memory) — but you, the human, are the one constant. Your memory shouldn't fragment across vendors.

Memento is one place where that memory lives. It runs an MCP server over a local SQLite file, so any MCP-capable AI assistant — Claude Desktop, Claude Code, Cursor, GitHub Copilot, Cline, OpenCode, Aider, a research bot, a custom agent — can read and write durable, structured memory about you, your work, and your decisions. Local-first, no outbound network calls by default, no vendor lock-in.

A fresh chat with no prior context — Memento supplies the memory of what was decided last week.

Quickstart

Three steps from zero to a working memory layer:

1. Run `init` (interactive on a TTY)

npx @psraghuveer/memento init

Creates the database under the XDG default ($XDG_DATA_HOME/memento/memento.db, typically ~/.local/share/memento/memento.db on POSIX), runs migrations, and — on a TTY — walks you through four one-keystroke setup questions:

Your preferred name. Stored as the user.preferredName config key so memories read "Raghu prefers …" instead of "The user prefers …".
Install the bundled skill? One y/N. Copies skills/memento/ into ~/.claude/skills/ for clients that load Anthropic-format skills.
Seed with a starter pack? Pick one of four bundled packs (engineering-simplicity, pragmatic-programmer, twelve-factor-app, google-sre) so your store has useful memories on day one. Skip to start empty.
Auto-install the persona snippet? Detects AI clients on your machine and writes a marker-wrapped block to each one's user-scope custom-instructions file (~/.claude/CLAUDE.md for Claude Code, ~/.config/opencode/AGENTS.md for OpenCode, ~/Documents/Cline/Rules/memento.md for Cline). Idempotent and removable. UI-only clients (Cowork, Claude Desktop, Claude Chat, Cursor User Rules) get printed paste instructions instead.

Then prints copy-paste MCP snippets for every supported client. Idempotent — re-run any time to reprint the snippets and re-ask anything you skipped. Pass --no-prompt to suppress the interactive flow (CI, scripts).

2. Connect your AI client

init prints either a one-line subcommand (where the client ships one) or a JSON snippet to merge into the client's MCP config. Pick the one for your client, paste it, then restart the client so it loads the new MCP server.

The full per-client walkthrough lives in docs/guides/mcp-client-setup.md.

3. Confirm the persona snippet reaches your assistant

Memento ships three teaching surfaces — an MCP instructions spine on the wire, a bundled skill for skill-capable clients, and the persona snippet. Of the three, only the persona snippet is guaranteed to reach the assistant's system prompt on every message — the MCP spec leaves instructions optional and client implementations vary in whether they surface it; the skill is intent-triggered so it doesn't fire on neutral first messages.

If you said Y to the persona auto-install prompt in Step 1, this is already done for every file-based AI client detected on your machine — the snippet was written to ~/.claude/CLAUDE.md, ~/.config/opencode/AGENTS.md, and/or ~/Documents/Cline/Rules/memento.md as applicable. For UI-only clients (Cowork, Claude Desktop, Claude Chat at claude.ai, Cursor User Rules) and for any client you have where the auto-installer didn't fire, copy the persona snippet from docs/guides/teach-your-assistant.md and paste it into the client's custom-instructions / system-prompt slot (the field's name varies — "Custom Instructions" in the client's settings UI, etc.).

That's it. Verify the wire works end-to-end with npx @psraghuveer/memento verify-setup — a write/search/cleanup round-trip that proves your assistant can actually call Memento.

Then try a fresh session: *"Remember that I prefer pnpm over npm for Node projects."* In the next session, ask *"What's my preferred package manager?"* and the assistant should recall it without you re-explaining.

Seed your store with a pack

A fresh Memento install is empty. Packs are curated YAML bundles of memories you can install in one step — a stack guide (Rust + Axum, TypeScript + pnpm, Python + uv…), a team's conventions, or a personal set you authored on another machine.

memento pack install engineering-simplicity

That command installs one of the bundled packs — eleven memories distilled from John Maeda's *The Laws of Simplicity*. Four bundled packs ship out of the box: engineering-simplicity, pragmatic-programmer (Hunt & Thomas's tips), twelve-factor-app (Wiggins / Heroku), and google-sre (Google's SRE books). Preview before installing with memento pack preview ; list what's installed with memento pack list; remove any time with memento pack uninstall --confirm (dry-run by default).

Packs are also how you share. Author one from your existing memories with memento pack create, then distribute it as a file, an HTTPS URL, or a community contribution. The reserved pack: : tag stamps every pack-installed memory so provenance never drifts. Full guide: docs/guides/packs.md. Design rationale: ADR-0020.

Getting started

Prerequisites. Node.js ≥ 22.11, and a C/C++ toolchain so better-sqlite3 can compile on platforms without a prebuild (Xcode command-line tools on macOS, build-essential on Debian/Ubuntu).

Run init once to set things up:

npx @psraghuveer/memento init

init defaults the database to the XDG data dir; pass --db /custom/path/memento.db (or set MEMENTO_DB=/custom/path/memento.db) if you want a non-default location.

To run the server directly (e.g. for debugging):

npx @psraghuveer/memento serve

The server listens on stdio for MCP requests. To pass extra flags (e.g. a custom database location):

npx @psraghuveer/memento serve --db ~/.local/share/memento/memento.db

You can also point at an existing database with the MEMENTO_DB environment variable.

Verify the install by running npx @psraghuveer/memento doctor (add --quick to skip the DB and embedder probes; add --mcp to also scan known MCP client config files). For a one-screen summary of what's in your store, npx @psraghuveer/memento status. To inspect what your install can do — registered commands, current config, database location — without speaking MCP, run npx @psraghuveer/memento context. To smoke-test the MCP transport end-to-end, npx @psraghuveer/memento ping.

Wiring Memento into an MCP client (Claude Desktop, Claude Code, Cursor, Cline, OpenCode, VS Code Agent mode, …) is covered step by step in docs/guides/mcp-client-setup.md. The TL;DR is the three-step quickstart above: init (which auto-installs the persona snippet into detected file-based clients if you say Y), paste the MCP-server snippet into your client, then for UI-only clients paste the persona snippet manually.

Vector retrieval (paraphrase matching on top of FTS) is on by default. The first search triggers a one-time model download (~110 MB) into $XDG_CACHE_HOME/memento/models (or ~/.cache/memento/models / %LOCALAPPDATA%\memento\Cache\models); after that, both FTS and vector arms run automatically. If the model has not yet downloaded, search degrades gracefully to FTS-only. For configuration options and library-wiring details, see docs/guides/embeddings.md.

Operating the store day-to-day — compact, backup, status, scheduling — is covered in docs/guides/operations.md. The conflict workflow is in docs/guides/conflicts.md. To prime an AI assistant on how to use Memento well, see docs/guides/teach-your-assistant.md — and, if your client loads Anthropic-format skills, install the bundled skill as on-intent enrichment over the persona snippet.

See and curate your store in a browser. npx @psraghuveer/memento dashboard launches a local-first web UI that reads against your MEMENTO_DB: memory counts by kind and scope, audit trail, conflict triage, config inspection, installed packs. Localhost-only, gated by a per-launch random token in the URL the launcher hands the browser, no telemetry. The dashboard is a sibling package (@psraghuveer/memento-dashboard) shipped under ADR-0018; see docs/guides/dashboard.md for the full walkthrough.

Stuck? Common failure modes (better-sqlite3 build errors, command not found: memento, STORAGE_ERRORs, missing embedder dependency) are covered in docs/guides/troubleshooting.md.

For the contributor workflow (branching, commit conventions, PR checklist) see CONTRIBUTING.md. AI agents working on the codebase must also read AGENTS.md.

Guiding principles

These are the four principles every design decision is judged against. They are documented at length in ARCHITECTURE.md.

First principles. Every construct exists because we proved we need it, not because it's how things are usually done.
Modular. Any component can be replaced without rewriting the rest.
Extensible. New variants don't require breaking changes.
Config-driven by the user. Behavior is shaped by configuration, not by code.

What Memento is

Four pillars. Same four words used everywhere else this is described.

Local. One SQLite file under your home directory. No cloud, no telemetry, no outbound network calls by default. Fully offline.
Typed. Five memory kinds — fact, preference, decision, todo, snippet — with kind-specific fields (a decision carries its rationale, a todo its due date, a snippet its langu

Only the beginning is shown; read the rest in the repo

Memento

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Search & AI memoryi

Common questions

Alternatives

Context7

Codebase Memory

Exa

README from the maker

Quickstart

1. Run init (interactive on a TTY)

2. Connect your AI client

3. Confirm the persona snippet reaches your assistant

Seed your store with a pack

Getting started

Guiding principles

What Memento is

1. Run `init` (interactive on a TTY)