ACE: Universal Memory Infrastructure for AI

Stop explaining your architecture to ChatGPT every morning.

ACE gives your AI tools (Claude, ChatGPT, Gemini, Cursor) persistent, structured memory that lives on your infrastructure.

The Problem

AI coding agents are amazing, but they're super-talented interns with amnesia.

• They forget your architectural decisions from last week.
• They re-introduce bugs you already fixed.
• They don't know why your codebase is structured this way.

The Solution

ACE (Autonomous Context Engine) is a memory layer that sits between you and your AI. It tracks decisions, patterns, issues, and context - so every AI session starts with full knowledge.

What Makes ACE Different

| | ACE3 | Mem0 | Zep | ChatGPT Memory | |---|---|---|---|---| | Structured entity types (10) | Yes | No | No | No | | Knowledge graph (15 relationship types) | Yes | No | Yes | No | | Plans (CLI plan tracking) | Yes | No | No | No | | Observer (AI monitoring AI) | Yes | No | No | No | | Agentic Intelligence (10 autonomous agents) | Yes | No | No | No | | Customer-hosted database | Yes | Partial | Enterprise | No | | MCP-native (56 tools) | Yes | Basic | No | No |

Quick Start

1. Install

npm install -g @ace3-memory/ace

2. Run

ace login    # Opens browser — auto-configures MCP for Claude Code
ace start    # Server runs on localhost:7777

Already installed? Run ace login again to auto-create the MCP config. This adds ACE tools to Claude Code across all your projects.

3. Use

# Check server is running
ace status

# Store a decision via REST API
curl -X POST http://localhost:7777/api/v1/my-project/decisions \
  -H "Authorization: Bearer $ACE_JWT_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"decision": "Use PostgreSQL", "rationale": "Vector extensions + ACID"}'

# Or let your AI use ACE tools directly via MCP
# (Claude Code, Cursor, etc. call ace_remember, ace_recall, ace_search automatically)

4. Update

# Update ACE to the latest version
npm install -g @ace3-memory/ace

# Or check for updates via CLI
ace update

Architecture

[ Your Machine ]
   |
   +-- [ ACE Server ] (localhost:7777)
   |      |
   |      +-- [ Your PostgreSQL ] (Neon, local, AWS, etc.)
   |
   +-- [ AI Tools ] (Claude, ChatGPT, Cursor) --> queries ACE via REST/MCP
   |
   +-- [ Dashboard ] (ace3-ai.com) --> visualize & manage memory

You provide: The database (PostgreSQL) and infrastructure. We provide: The intelligence, dashboard, and tools.

Features

| Feature | Description | |---------|-------------| | 10 Entity Types | Memories, decisions, issues, work logs, architecture, patterns, best practices, observations, tags, relationships | | Knowledge Graph | 15 relationship types with temporal traversal, graph analytics, and visualization | | Semantic Search | OpenAI embeddings + pgvector for intelligent recall | | Plans | Save and track implementation plans from any CLI AI (Claude Code, Cursor, ChatGPT) | | Observer | AI that monitors your AI for errors, drift, contradictions | | Agentic Intelligence | 10 autonomous agents (observe/reason/act/reflect) that govern and improve memory | | MCP Server | 56 tools for Claude Desktop, Claude Code, Cursor, VS Code, ChatGPT, Gemini | | REST API | Full CRUD API for any AI tool or custom integration | | Dashboard | Web UI at ace3-ai.com for visual memory management |

Pricing

Permanent free tier - no expiry, no credit card required.

| Tier | Price | For | |------|-------|-----| | Free | £0 forever | Try ACE with 1 namespace, 1,000 memories | | Starter | £14.99/mo | Solo developers (3 namespaces, 5,000 memories) | | Pro | £39.99/mo | Teams (10 users included, +£3/extra, unlimited) | | Founder | £499 one-time | Lifetime Pro+ (25 users, limited to 100 licenses) | | Enterprise | Custom | Unlimited everything, SSO, SLA |

View Pricing

Contributing

We welcome contributions to:

• Integrations: VS Code extension, browser extensions
• Parsers: Add support for Rust, Go, Java

Built by a developer, for developers.