avimind 0.4.0

Persistent memory layer for AI agents and LLM applications.

🧠 AviMind

The open-source memory layer that gives AI agents long-term memory through semantic search, hybrid retrieval, intelligent ranking, and automatic deduplication.

AviMind is an open-source persistent memory engine for AI agents and LLM-powered applications. It enables applications to remember user preferences, business context, conversations, and long-term knowledge across sessions.

Unlike traditional chat history, AviMind combines semantic search, hybrid ranking, keyword awareness, and memory importance scoring to retrieve the most relevant context for your AI applications.

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✨ Features

• ✅ Persistent long-term memory
• ✅ Semantic search with embeddings
• ✅ Hybrid retrieval (semantic + keyword ranking)
• ✅ Automatic duplicate detection
• ✅ Memory importance scoring
• ✅ Intelligent context retrieval
• ✅ FastAPI REST APIs
• ✅ SQLite backend (zero configuration)
• ✅ Docker support
• ✅ Python SDK
• 🚧 PostgreSQL support (planned)
• 🚧 pgvector integration (planned)
• 🚧 Redis session memory (planned)

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💡 Why AviMind?

Most AI agents forget everything after a conversation ends.

AviMind acts as a reusable memory layer that enables applications to remember:

• User preferences
• Business context
• Long-term facts
• Agent decisions
• Tool outputs
• Organizational knowledge
• Previous conversations

Instead of relying solely on exact keyword matching, AviMind uses embeddings and hybrid retrieval techniques to surface the most relevant memories automatically.

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🚀 Example Use Cases

• AI chatbots with persistent memory
• Enterprise AI copilots
• Agentic workflows
• Customer support assistants
• Personal AI assistants
• Research assistants
• Knowledge management platforms
• LLM applications requiring long-term context

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⚡ Quick Start

Clone the repository

git clone https://github.com/avinashmhto/avimind.git

cd avimind

Create a virtual environment

python -m venv .venv

Windows (Git Bash)

source .venv/Scripts/activate

Linux / macOS

source .venv/bin/activate

Install dependencies

pip install -r requirements.txt

Run AviMind Locally

uvicorn avimind_server.main:app --reload

Open Swagger UI:

http://127.0.0.1:8000/docs

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🐳 Run with Docker

Build and start AviMind:

docker compose up --build

Once the container is running, open:

http://localhost:8000/docs

To stop the service:

docker compose down

AviMind uses SQLite by default and stores its database in the local data/ directory, so no external database is required to get started.

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🐍 Python SDK

AviMind ships with a lightweight Python SDK that makes integration straightforward.

Create a client

from avimind import AviMind

client = AviMind("http://localhost:8000")
Store a memory
client.remember(
    user_id="avinash",
    agent_id="sdk-agent",
    session_id="chat-001",
    memory_type="profile_memory",
    content="User prefers AWS Singapore region.",
    tags=["aws", "preference"],
    importance=0.9,
)
Search memories
results = client.search(
    user_id="avinash",
    query="Which cloud region does the user prefer?"
)

print(results)
Retrieve context
context = client.context(
    user_id="avinash",
    query="Which cloud region does the user prefer?"
)

print(context)
Check server health
status = client.health()

print(status)
Delete a memory
client.delete("memory-id")

The SDK currently supports:

health()
remember()
search()
context()
delete()

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# 📝 Example

## Store a Memory

```json
{
  "user_id": "avinash",
  "agent_id": "goal-agent",
  "session_id": "goal-001",
  "memory_type": "goal_memory",
  "content": "User is building AviMind as an open-source persistent memory engine for AI agents.",
  "source": "manual",
  "created_by": "human",
  "tags": [
    "startup",
    "avimind",
    "opensource"
  ],
  "importance": 1.0
}

Retrieve Context

Query:

What startup is the user building?

Response:

{
  "context": [
    "User is building AviMind as an open-source persistent memory engine for AI agents."
  ]
}

AviMind retrieves relevant memories using semantic understanding and hybrid ranking, even when the query wording differs from the original stored text.

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🏗️ Core Capabilities

Capability	Status
Persistent Memory	✅
Semantic Search	✅
Hybrid Retrieval	✅
Automatic Deduplication	✅
Memory Ranking	✅
Context Retrieval	✅
FastAPI REST API	✅
SQLite Backend	✅
Docker Support	✅
Python SDK	✅
PostgreSQL Backend	🚧 Planned
pgvector Integration	🚧 Planned
Redis Session Memory	🚧 Planned

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🚧 Current Status

Version: v0.4

Implemented:

• Persistent memory storage
• Semantic search
• Hybrid retrieval (semantic + keyword ranking)
• Automatic duplicate detection
• Memory importance scoring
• Context retrieval APIs
• SQLite backend
• Docker support
• REST APIs with Swagger documentation

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🛣️ Roadmap

v0.4

• Python SDK
• Memory update APIs
• Memory listing APIs
• Memory expiration policies

with:

v0.5

• Memory update APIs
• Memory listing APIs
• Memory expiration policies
• Publish SDK to PyPI
• Authentication support for SDK

v1.0

• PostgreSQL backend
• pgvector integration
• Redis session memory
• Multi-tenant support
• OpenAI integration
• Ollama integration
• LangGraph integration
• MCP compatibility
• Cloud deployment guides

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🤝 Contributing

Contributions, ideas, feature requests, and pull requests are welcome.

If AviMind helps your AI applications become smarter and more context-aware, please consider giving the project a ⭐ on GitHub.

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📄 License

Released under the MIT License.

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👨‍💻 Author

Avinash Mahto

Building practical infrastructure for AI agents, enterprise GenAI, cloud-native platforms, and intelligent memory systems.