Markdown memory runtime for agents and tools

Table of Contents

• Why EverOS
• Ecosystem Integrations
• Quick Start
• Use Cases
• Documentation
• EverMind Ecosystem
• Contributing

Why EverOS

EverOS is a Python library and local-first memory runtime for agents and makers. It gives one portable memory layer across coding assistants, apps, devices, and workflows from day one. It stores conversations, files, and agent trajectories as readable Markdown, then syncs local SQLite and LanceDB indexes for fast retrieval and self-evolving reuse.

Title	EverOS	Other Agent Memory Libraries
Markdown source of truth	✅ Canonical .md files that are readable, editable, diffable, and Git-versioned	❌ Usually API, vector, graph, dashboard, or database state
Direct file editing	✅ Edit .md files; cascade watcher syncs	❌ Usually SDK, API, dashboard, or backend update paths
Local three-part stack	✅ Markdown + SQLite + LanceDB; no MongoDB, Elasticsearch, or Redis required	❌ Often depends on managed services, vector DBs, graph DBs, or server stacks
User + agent tracks	✅ User episodes/profile and agent cases/skills are separate first-class surfaces	❌ Usually centered on chat history, profiles, entities, facts, or retrieval records
Orthogonal retrieval	✅ Search by user_id, agent_id, app_id, project_id, and session_id	❌ Usually app, namespace, tenant, thread, or graph scoped
Knowledge Wiki	✅ Editable, source-backed Markdown knowledge pages with taxonomy, CRUD APIs, and topic search	❌ Usually separate from memory, trapped in a dashboard, or not tied back to source files
Reflection	✅ Offline memory evolution that merges episode clusters and refines profiles and skills between sessions	❌ Usually retrieval-only memory with little background consolidation or long-horizon improvement

Ecosystem Integrations

EverOS adds durable memory to the agent and workflow platforms below—and comes built into Raven. Choose an integration to open its setup guide.

DeepSeek Harness

Hermes

OpenClaw

Raven

Dify

Quick Start

One OpenRouter API key is enough to start EverOS, write durable memories, and retrieve them with keyword search.

Prerequisites

• Python 3.12+
• One OpenRouter API key

1. Install

uv pip install everos
# or: pip install everos

2. Try the standalone demo — no key required

No API key or server setup required—run one command to quickly experience how EverOS stores and recalls memory:

# If you installed EverOS as a package:
everos demo

# If you cloned or forked this repository and have not activated .venv:
uv run everos demo

Enter something EverOS should remember, then ask a related question to watch the memory move through ingest -> extract -> index -> recall.

https://github.com/user-attachments/assets/98cb8e1e-2ca8-4504-b0a6-0b9a040a0a5c

3. Initialize and add your OpenRouter key

everos init

This creates ~/.everos/everos.toml and ~/.everos/ome.toml. Open ~/.everos/everos.toml; the generated model and OpenRouter URL are already correct, so replace only the empty api_key:

[llm]
model = "openai/gpt-4.1-mini"
api_key = "<OPENROUTER_API_KEY>"
base_url = "https://openrouter.ai/api/v1"

This is the smallest Tier 1 setup: memory add, flush, Markdown persistence, cascade indexing, and keyword search.

Use everos init --root <path> if you want a different memory root. Pass the same --root <path> to subsequent commands.

4. Start EverOS

everos server start

Keep the server running, then open a second terminal and check it:

curl http://127.0.0.1:8000/health

Look for "status":"ok". With this one-key setup, capabilities.llm is true; embedding and rerank remain false until you configure them.

5. Add and retrieve your first memory

[!NOTE] Business endpoints live under /api/v2. The older /api/v1 prefix still resolves to the same handlers so existing integrations keep working, but it is a legacy alias that may be removed in a future major release — write new code against /api/v2.

Add a tiny conversation:

TS=$(($(date +%s)*1000))

curl -X POST http://127.0.0.1:8000/api/v2/memory/add \
  -H 'Content-Type: application/json' \
  -d "{
    \"session_id\": \"demo-001\",
    \"app_id\": \"default\",
    \"project_id\": \"default\",
    \"messages\": [
      {\"sender_id\": \"alice\", \"role\": \"user\", \"timestamp\": $TS, \"content\": \"I love climbing in Yosemite every spring.\"},
      {\"sender_id\": \"alice\", \"role\": \"user\", \"timestamp\": $((TS+10000)), \"content\": \"My favorite coffee shop is Blue Bottle in SOMA.\"}
    ]
  }"

Flush the memory at the end of the session:

curl -X POST http://127.0.0.1:8000/api/v2/memory/flush \
  -H 'Content-Type: application/json' \
  -d '{"session_id":"demo-001","app_id":"default","project_id":"default"}'

Search it back:

curl -X POST http://127.0.0.1:8000/api/v2/memory/search \
  -H 'Content-Type: application/json' \
  -d '{
    "user_id": "alice",
    "app_id": "default",
    "project_id": "default",
    "query": "Where do I like to climb?",
    "method": "keyword",
    "top_k": 5
  }'

You should see the Yosemite memory in the response. Keep "method": "keyword" in this one-key setup because the API defaults to hybrid search, which requires an embedding provider.

[!TIP] First memory unlocked. You just gave EverOS a fact, flushed it into durable Markdown-backed memory, and searched it back through the local index. That is the core loop. Want to see the source of truth? Open ~/.everos and inspect the generated Markdown files.

For annotated responses and the Markdown files EverOS creates, see QUICKSTART.md.

What works with one key?

The OpenRouter one-key setup is EverOS Tier 1. It supports server startup, memory add and flush, durable Markdown storage, cascade indexing, and keyword search. Add optional providers only when you need the features below:

Configuration	Adds
[llm] only	Core memory flow and keyword search
Add [embedding]	Vector/user hybrid search, reflection, and skill extraction
Add [rerank] too	Agentic search, default agent hybrid search, and Knowledge Wiki
Add [multimodal] and parser extra	Image, PDF, audio, and office-file ingestion

Missing optional capabilities are reported by /health and return a clear HTTP 422 if you request a feature that needs them.

[!NOTE] everos demo --live is different from the standalone demo in step 2: it connects to a running server and uses the real add/flush/search flow. It uses hybrid search, so add an embedding provider before you run it.

Optional: Ingest Multimodal Files

To ingest non-text content (image / pdf / audio / office documents) through /api/v2/memory/add content items, install the optional extra:

uv pip install 'everos[multimodal]'   # or: pip install 'everos[multimodal]'

This pulls in everalgo-parser (with the [svg] bundle for SVG support via cairosvg). Configure the [multimodal] section in everos.toml; its default model is google/gemini-3.8-flash via OpenRouter.

Office document support requires LibreOffice as a system dependency. The parser shells out to soffice (LibreOffice's headless renderer) to convert .doc / .docx / .ppt / .pptx / .xls / .xlsx to PDF before feeding the result into the multimodal LLM. Without LibreOffice, office uploads return HTTP 415 with a clear error message; PDF / image / audio / HTML / email parsing is unaffected.

Install on the host before serving office documents:

brew install --cask libreoffice              # macOS
sudo apt-get install -y libreoffice          # Debian / Ubuntu

For Contributors

git clone https://github.com/EverMind-AI/EverOS.git
cd EverOS
uv sync                              # creates ./.venv and installs deps
uv run everos demo --plain           # try the local educational demo; no API keys needed
uv run everos init                   # add one OpenRouter key to ~/.everos/everos.toml

uv run everos --help
make test

Use Cases

Now that you have had your first successful EverOS moment, explore what people are building with persistent memory across agents, apps, and community integrations.

Use cases show what persistent memory makes possible in real products and workflows. Some examples are packaged in this repository; others point to external demos or integrations you can study and adapt.

AIUI Sports Agents Sports agents for smart glasses, covering running, cycling, and indoor rowing. AISmartRun includes an optional memory-backend contract for post-run summaries; connecting it to EverOS requires a separately configured backend. Code	Reunite - Find With EverOS Parents describe what they remember. Children describe what they recall. Reunite uses semantic memory to surface the connections. Learn more
Hive Orchestrator Browser-native hive-mind for CLI coding agents - Claude Code, Codex, Gemini, and OpenCode collaborate as real PTY processes via a team protocol. Code	AI Coding Assistants With EverOS Universal long-term memory layer for AI coding assistants, powered by EverOS. Code
AI Data Technician An agentic AI system that learns from scientist interaction to inspect, analyze, and classify high-dimensional time series data - with persistent memory that improves across sessions. Code	Rokid AI Assistant With EverOS Connect to EverOS within Rokid Glasses enabling long-term memory for all of your smart activities. Coming soon
Creative Assistant With Memory Creative assistant with long-term memory, so your creative context stays available across sessions. Coming soon	Earth Online Memory Game Earth Online is a memory-aware productivity game that turns everyday planning into a living quest log. Code
Multi-Agent Orchestration Platform Golutra presents a multi-agent workforce for engineering teams, extending the IDE model from a single assistant to coordinated agents. Code	Your Personal Tasting Universe Record, visualize, and explore your tasting journey through an immersive 3D star map. Code
EverOS Open Her Build AI that feels. Open-source persona engine - personality emerges from neural drives, not prompts. Inspired by Her. Code	Browser Agent For Personal Memory Ruminer brings persistent memory to a browser agent so it can carry personal context across web tasks. Plugin
EverMem Sync With EverOS One command to connect any AI coding CLI to EverOS (formerly called EverMemOS) for long-term memory. Code	MCO - Orchestrate AI Coding Agents MCO equips your primary agent with an agent team that can work together to solve complex tasks. Code
Study Buddy With Self-Evolving Memory Study proactively with an agent that has self-evolving memory. Code	Alzheimer's Memory Assistant Empowering individuals with advanced memory support and daily assistance. Code
Memory-Driven Multi-Agent NPC Experience An iOS sci-fi mystery game where players explore and uncover the truth. Code	Mobi Companion An iOS app where users create, nurture, and live with a personalized AI companion called Mobi. Code
AI Wearable With Memory A context-native AI wearable that listens to everyday life and converts conversations into memory. Code	Legacy OpenClaw Agent Memory Archived pre-1.0.0 plugin reference. New integrations should use the current EverOS API. Learn more
Live2D Character With Memory Add long-term memory to a real-time Live2D character, powered by TEN Framework. Code	Computer-Use With Memory Run screenshot-based analysis with computer-use and store the results in memory. Live Demo
Game Of Thrones Memories A demonstration of AI memory infrastructure through an interactive Q&A experience with A Game of Thrones. Code	Claude Code Plugin Persistent memory for Claude Code. Automatically saves and recalls context from past coding sessions. Code
Memory Graph Visualization Explore stored entities and relationships in a graph interface. Frontend demo; backend integration is in progress. Live Demo

Documentation

• docs/everos-demo.md — Demo scope and TUI source layout
• docs/how-memory-works.md — Markdown, SQLite, LanceDB, and recall flow
• docs/use-cases.md — Full use-case gallery and integration examples
• docs/engineering.md — Contributor engineering reference: build, test, CI, conventions
• docs/migration-to-1.0.0.md — Legacy API migration notes
• CHANGELOG.md — Release notes
• CONTRIBUTING.md — How to contribute

EverMind Ecosystem

EverMind connects memory research, production-ready products, and practical integrations into one open-source ecosystem.

Products
EverOS	A local-first, Markdown-native long-term memory runtime for agents and users.
Raven	A memory-first, self-improving agent harness with proactivity, context control, and skill evolution.
EverMe (CLI)	A CLI and agent plugin suite for cross-device, cross-agent personal memory.
Research & Evaluation
SkillCorpus	Curated, retrieval-ready agent skill corpora with retrieval and evaluation tooling.