Cognee

Cognee - The Open-Source AI Memory Platform for Agents

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Cognee is the open-source AI memory platform that gives AI agents persistent long-term memory across sessions. Ingest data in any format, build a self-hosted knowledge graph, and let every agent recall, connect, and act with full context

📄 Read the research paper: Optimizing the Interface Between Knowledge Graphs and LLMs for Complex Reasoning — Markovic et al., 2025

About Cognee

Cognee is an open-source AI memory platform for AI Agents. Ingest data in any format, and Cognee continuously builds a self-hosted knowledge graph that gives your agents persistent long-term memory across sessions. Cognee combines vector embeddings, graph reasoning, and cognitive-science-grounded ontology generation to make documents both searchable by meaning and connected by relationships that evolve as your knowledge does.

:star: Help us reach more developers and grow the cognee community. Star this repo!

:books: Check our detailed documentation for setup and configuration.

:crab: Available as a plugin for your OpenClaw — cognee-openclaw

✴️ Available as a plugin for your Claude Code — claude-code-plugin

🦀 Available as a Rust client — cognee-rs

🟦 Available as a TypeScript client — @cognee/cognee-ts

Why use Cognee:

• Easily Build Company Brain - unify data from various sources in one place and enable Agents with your domain knowledge
• Knowledge infrastructure — unified ingestion, graph/vector search, runs locally, ontology grounding, multimodal
• Persistent and Learning Agents - learn from feedback, context management, cross-agent knowledge sharing
• Reliable and Trustworthy Agents - agentic user/tenant isolation, traceability, OTEL collector, audit traits

How it Works

Basic Usage & Feature Guide

To learn more, check out this short, end-to-end Colab walkthrough of Cognee's core features.

Quickstart

Let’s try Cognee in just a few lines of code.

Prerequisites

• Python 3.10 to 3.14

Step 1: Install Cognee

You can install Cognee with pip, poetry, uv, or your preferred Python package manager.

uv pip install cognee

Step 2: Configure the LLM

import os
os.environ["LLM_API_KEY"] = "YOUR OPENAI_API_KEY"

Alternatively, create a .env file using our template.

To integrate other LLM providers, see our LLM Provider Documentation.

Step 3: Run the Pipeline

Cognee's API gives you four operations — remember, recall, forget, and improve:

import cognee
import asyncio


async def main():
    # Store permanently in the knowledge graph (runs add + cognify + improve)
    await cognee.remember("Cognee turns documents into AI memory.")

    # Store in session memory (fast cache, syncs to graph in background)
    await cognee.remember("User prefers detailed explanations.", session_id="chat_1")

    # Query with auto-routing (picks best search strategy automatically)
    results = await cognee.recall("What does Cognee do?")
    for result in results:
        print(result)

    # Query session memory first, fall through to graph if needed
    results = await cognee.recall("What does the user prefer?", session_id="chat_1")
    for result in results:
        print(result)

    # Delete when done
    await cognee.forget(dataset="main_dataset")


if __name__ == '__main__':
    asyncio.run(main())

Use the Cognee CLI

cognee-cli remember "Cognee turns documents into AI memory."

cognee-cli recall "What does Cognee do?"

cognee-cli forget --all

To open the local UI, run:

cognee-cli -ui

Note: The MCP server launched by cognee-cli -ui runs inside a Docker container. Docker Desktop, Colima, or any OCI-compatible runtime with a working docker CLI is required. See Docker & Colima Setup for details.

Run with Docker

Prefer containers? Cognee publishes prebuilt images to Docker Hub on every push to main: cognee/cognee (the API server) and cognee/cognee-mcp (the MCP server).

Option A — Docker Compose (build from source)

Clone the repo, create a .env with at least LLM_API_KEY, then:

cp .env.template .env   # then edit .env and set LLM_API_KEY

# Start the API server (http://localhost:8000)
docker compose up

# Optional profiles (combine as needed):
docker compose --profile ui up        # + frontend on http://localhost:3000
docker compose --profile mcp up       # + MCP server on http://localhost:8001
docker compose --profile postgres up  # + Postgres/PGVector
docker compose --profile neo4j up     # + Neo4j

The cognee and cognee-mcp services publish different host ports (8000 vs 8001), so you can run both at once.

Option B — Pull the prebuilt image (no clone required)

# Create a minimal .env in the current directory
echo 'LLM_API_KEY="YOUR_OPENAI_API_KEY"' > .env

# API server
docker run --env-file ./.env -p 8000:8000 --rm -it cognee/cognee:main

# MCP server (HTTP transport)
docker pull cognee/cognee-mcp:main
docker run -e TRANSPORT_MODE=http --env-file ./.env -p 8000:8000 --rm -it cognee/cognee-mcp:main

See the MCP server README for SSE/stdio transports, optional extras, and MCP client configuration.

Use with AI Agents

Claude Code

Install the Cognee memory plugin to give Claude Code persistent memory across sessions. The plugin captures prompts, tool traces, and assistant responses into session memory, injects relevant context on every prompt, and syncs session memory into the permanent knowledge graph at session end.

Install from the Claude Code marketplace. The recommended way is from your shell, before launching Claude Code, so the first claude launch is a clean session that bootstraps memory automatically:

# Add the marketplace and install the plugin (one-time, user-scoped)
claude plugin marketplace add topoteretes/cognee-integrations
claude plugin install cognee-memory@cognee

# Set env vars for your mode (see below), then launch
export LLM_API_KEY="sk-..."   # local mode; or COGNEE_BASE_URL + COGNEE_API_KEY for cloud
claude

Local mode (default) — the plugin bootstraps a local Cognee API at http://localhost:8011. Only LLM_API_KEY is required; the Cognee API key is auto-minted if absent:

export LLM_API_KEY="sk-..."

Cognee Cloud or a remote server — set both:

export COGNEE_BASE_URL="https://your-instance.cognee.ai"
export COGNEE_API_KEY="ck_..."

On startup you should see a "Cognee Memory Connected" system message.

The plugin hooks into Claude Code's lifecycle — SessionStart selects mode and sets up identity, UserPromptSubmit injects dataset-scoped context, PostToolUse captures tool traces, Stop writes the assistant's answer, PreCompact preserves memory across context resets, and SessionEnd triggers the final sync into the permanent graph.

See the plugin README for sessions, datasets, and full configuration.

Connect to Cognee Cloud

Point any Python agent at a managed Cognee instance — all SDK calls route to the cloud:

import cognee

await cognee.serve(url="https://your-instance.cognee.ai", api_key="ck_...")

await cognee.remember("important context")
results = await cognee.recall("what happened?")

await cognee.disconnect()

Examples

Browse more examples in the examples/ folder — demos, guides, custom pipelines, and database configurations.

Use Case 1 — Customer Support Agent

Goal: Resolve customer issues using their personal data across finance, support, and product history.

User: "My invoice looks wrong and the issue is still not resolved."

Cognee tracks: past interactions, failed actions, resolved cases, product history

# Agent response:
Agent: "I found 2 similar billing cases resolved last month.
        The issue was caused by a

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