Now Available — Windows · Mac · Linux

Your AI coding assistant
finally has a memory.

ArcBrain is a persistent memory layer for VS Code Copilot, Cursor, and Claude Desktop. Your decisions, configs, snippets, and context — remembered forever, across every session.

⬇ Start Free Trial — 14 Days View Pricing

14-day free trial · No credit card required · 1-minute setup

Works with your editors

💙 VS Code Copilot 🔵 Cursor AI 🔶 Claude Desktop 🟢 Any MCP Client

ArcBrain — MCP Memory Server

$ arcbrain memory_search "stripe integration"

🧠 ArcBrain → Found 12 relevant memories

decision · Use Stripe Checkout, not Elements — simpler webhook flow

config · SUCCESS_URL = https://arcbrain.dev/success (set in Railway)

snippet · License key format: ARCBRAIN-XXXX-XXXX-XXXX (sha256-based)

error · Fixed: webhook 400 → add raw body parser before json()

file · installer/subscription/server.js:61

Features

Everything your AI forgets,
ArcBrain remembers.

A full-featured MCP server that stores, searches, and surfaces your development context exactly when you need it.

💾

Persistent Memory

SQLite + ChromaDB vector search. Facts, decisions, configs, snippets, errors, and todos survive every session restart and context window limit.

🔍

Semantic Search

Ask in plain English. ArcBrain finds the most relevant past context using vector embeddings — no exact keyword matching needed.

🤝

Works With Your Editors

Native MCP integration with VS Code Copilot, Cursor, and Claude Desktop. One-click setup via the ArcBrain GUI. No configuration files to edit manually.

📥

Chat History Import

Automatically imports and learns from your existing Cursor and VS Code Copilot conversations — so ArcBrain knows your project history from day one.

📊

Live Dashboard

A beautiful Streamlit dashboard shows your memory graph, recent facts, project stats, and session summaries — all browsable at localhost:8501.

⚡

56+ MCP Tools

Store facts, track decisions, log errors, manage todos, capture code snippets, record dependencies, and run session summaries — all from your AI editor.

🧩

Browser Extension

A companion browser extension that detects development-relevant tabs (GitHub, MDN, Stack Overflow) and imports them as memory context automatically.

🔒

Fully Local & Private

Your memory stays on your machine. ArcBrain uses a local Ollama instance for AI summarization — no data ever leaves your computer. You own everything.

✦

Constellation Memory Map

See your entire knowledge graph rendered as an interactive visual constellation. Highly-connected nodes glow brightest. Spot gaps, clusters, and relationships in your memory at a glance.

ArcBrain automatically detects project phases, pending decisions, patterns across sessions, and file activity — building your knowledge graph in the background.

56+

MCP Tools

Supported Editors

∞

Memory Capacity

100%

Local & Private

< 1 min

Setup Time

Constellation Memory Map

See how your knowledge connects.

ArcBrain doesn't just store memories — it maps the relationships between them. The Constellation Map renders your entire knowledge graph as an interactive visual network, live in your dashboard.

Every fact, decision, snippet, and error becomes a node. Edges show how they reference each other. The more connections a memory has, the brighter and more prominent it glows.

Red nodes — your most cross-referenced memories. These are your core project anchors.
Orange & yellow nodes — frequently linked context: active decisions, key configs, recurring errors.
Green nodes — mid-weight memories: session summaries, resolved issues, useful snippets.
Blue nodes — recent or lightly connected memories still building their place in the graph.

Explore Your Memory Graph →

How It Works

Set up in 60 seconds. Remember forever.

ArcBrain runs as a local MCP server. Your AI editor talks to it automatically — no prompts, no manual saving.

Download & Install

Run the ArcBrain setup wizard. It detects your editors automatically and connects them in one click.

Open Your Editor

ArcBrain starts automatically in the background. Your AI assistant can now read and write to your persistent memory.

Never Repeat Yourself

Decisions, configs, snippets, and errors are saved automatically. Pick up any conversation exactly where you left off — days, weeks, or months later.

Pricing

Try free for 14 days. No credit card.

Start with a full-featured 14-day free trial. Pick the plan that fits — monthly flexibility or a one-time lifetime deal.

Local intelligence.
Not another cloud wrapper.

Most "AI memory" tools are pay-per-query cloud services with flat vector stores. ArcBrain is a persistent local cognitive graph you own entirely.

Feature	ArcBrain from $25/mo · $199 lifetime	Cloud AI Memory Tools typically $69+/mo · no lifetime
Graph-based constellation memory	✓ full graph + edges	✗ flat vector store
Runs 100% locally & privately	✓ nothing leaves your machine	✗ cloud-only
Works offline	✓	✗
Decision & intent tracking	✓ auto-detected	✗ manual notes only
Import from Cursor / VS Code history	✓ unlimited	— limited or blocked
VS Code, Cursor, Claude Desktop & more	✓ all 5 editors	1–2 editors
Memory auto-decay + reinforcement	✓ built-in metabolism	✗
One-time lifetime pricing	✓ $199 beta	✗ subscription only

FAQ

Common questions

Does ArcBrain send my data anywhere?

No. ArcBrain runs entirely on your local machine. Your memory is stored in a local SQLite database and a local ChromaDB vector store — both on your computer. The optional AI summarization uses Ollama (also local). The only network call is optional: license validation.

What editors does ArcBrain support?

ArcBrain works with any editor that supports the Model Context Protocol (MCP). Currently that includes VS Code with GitHub Copilot, Cursor, and Claude Desktop. The ArcBrain setup wizard auto-detects your editors and writes the configuration for you — no manual JSON editing required.

Do I need Ollama or any AI model running locally?

No — Ollama is optional. The core memory features (storing, searching, and retrieving facts, snippets, decisions) work without any local AI model. Ollama (llama3.2:3b or similar) is only needed if you want automatic end-of-session summaries. The setup wizard will let you enable or skip it.

Is there a free trial?

Yes — every plan includes a 14-day free trial with no credit card required. You get full Pro access during the trial. After 14 days, choose the Pro Monthly ($25/mo) or Lifetime ($199 beta, normally $299) plan to continue. If you don't upgrade, your local memory data is always yours to keep.

How is this different from using a .cursor/rules file or system prompt?

Static rules files require you to manually write and maintain context. ArcBrain automatically captures and persists context as you work — decisions you make, errors you solve, configs you set, todo items, and more. It also supports semantic search so your AI can find relevant memories from months ago without you having to remember to include them.

Can I migrate my data if I change machines?

Copy your ~/arcbrain/data/ folder to the new machine — it contains your full SQLite database and ChromaDB vector store. Run the installer on the new machine and it will pick up where you left off. The setup wizard auto-connects your editors, so you're back in business in under a minute.

Install in one command.

Works on Windows, macOS, and Linux. Setup wizard auto-connects your editors.

irm https://arcbrain.pages.dev/install.ps1 | iex Windows PowerShell

curl -fsSL https://arcbrain.pages.dev/install.sh | bash Mac / Linux

Full Install Guide → View on GitHub →

14-day free trial · No credit card required · Opens setup wizard at localhost:9876

Your AI coding assistantfinally has a memory.

Everything your AI forgets,ArcBrain remembers.