What is MemOS built with?

MemOS is a TypeScript repo built with FastAPI, uvicorn, anyio, starlette, fastmcp, and 8 more. It stores its data in Postgres and SQLite, reaches it with SQLAlchemy, signs people in with authlib, cryptography, itsdangerous, keyring, pyjwt, and 1 more, uses AI through langsmith, mcp, nltk, NVIDIA, nvidia-cudnn-cu12, and 17 more, makes its content with beautifulsoup4, defusedxml, docutils, et-xmlfile, jinja2, and 17 more, validates its data with annotated-types, beartype, email-validator, jsonschema, jsonschema-path, and 8 more, is tested with Pytest, Vitest, Testing Library, @playwright/test, and playwright, deploys with coloredlogs, concurrent-log-handler, fastapi-cloud-cli, volcengine-python-sdk, prometheus-client, and 1 more, and uses diskcache, psycopg2-binary, py-key-value-aio, pymysql, Redis, and 8 more. It has 447,484 written lines, with 480 test files.

Read on November 11, 2026, at commit 3a16e5f. Read it as markdown

Frequently asked questions

What language is MemOS written in?

MemOS is written in TypeScript, with 447,484 written lines.

What framework does MemOS use?

MemOS is built with FastAPI, uvicorn, anyio, starlette, fastmcp, Preact, @deepseek-ai/cordis, Vite, React, react-router-dom, Electron, Express, and Hono.

What database does MemOS use?

MemOS stores its data in Postgres and SQLite and reaches it with SQLAlchemy.

The proof: src/memos/graph_dbs/postgres.py, line 1

What does MemOS sign people in with?

MemOS signs people in with authlib, cryptography, itsdangerous, keyring, pyjwt, and @aws-sdk/credential-providers.

Does MemOS use AI?

Yes. MemOS uses AI through langsmith, mcp, nltk, NVIDIA, nvidia-cudnn-cu12, onnxruntime, safetensors, tavily-python, tokenizers, triton, scikit-learn, torch, transformers, LangChain, Ollama, chonkie, Hugging Face, rank-bm25, sentence-transformers, OpenAI, deepseek-ai, and @aws-sdk/client-bedrock.

What services does MemOS use?

MemOS uses diskcache, psycopg2-binary, py-key-value-aio, pymysql, Redis, Neo4j, pika, pymilvus, Alibaba Cloud, Qdrant, @deepseek-ai/dsh-session, electron-store, and MCP.

Does MemOS have tests?

Yes. MemOS has 480 test files and is tested with Pytest, Vitest, Testing Library, @playwright/test, and playwright.

Which repos have a stack like MemOS's?

The ones that share most of its stack:apache/supersetdatawhalechina/hello-agentsrun-llama/llama_index

See inside your code, today.

Paste your repo and see it drawn, part by part: a medium one in under a minute.

Draw my repo

Free, no account.

Or look inside SeeRepo's own →

Is it your repo? Add its badge, keep it up to date or take it down →