Basic Memory
Free本地优先的知识管理系统，从 Markdown 文件构建语义图，实现跨对话持久记忆。
FreeFree tier
Inputs: textOutputs: text
About Basic Memory
Basic Memory is a local-first, open-source knowledge management system that gives AI persistent memory across conversations. It stores knowledge as Markdown files on your disk, builds a real knowledge graph with observations and wikilinks, and provides semantic search. It works with Claude, Codex, Cursor, ChatGPT, and any MCP-compatible client. Supports two-way sync between AI and humans, and offers optional cloud sync for teams. Licensed under AGPL-3.0.
Key Features
Local-first: Plain text Markdown files on your disk, forever.
Two-way sync: AI and humans write to the same files; sync keeps them in step.
Real knowledge graph: Observations and wikilinks compound into context.
Semantic search: Find notes by meaning, not just keywords.
MCP-native: Works with every major AI client and IDE (Claude, Codex, Cursor, ChatGPT).
Progressive tool discovery: Tools are tagged with behavior hints (read-only, destructive, idempotent) so agents pick the right tool on demand.
Optional cloud sync: Sync across devices when you want, never required.
Pros & Cons
Pros
- Free and open-source (AGPL-3.0) for local install
- Works with multiple AI clients and IDEs via MCP
- Semantic search and knowledge graph provide deep context
- Local-first: all data remains in plain text on your disk
- Optional cloud sync enables cross-device access and team collaboration
Cons
- Requires Python and uv tool for local installation
- Cloud sync and Teams features are paid ($15/mo)
- Beta software may have bugs or incomplete features
- Knowledge graph may require manual wikilink creation for best results
Best For
Persistent memory for AI assistants across conversationsCollaborative team knowledge base with shared cloud workspacePersonal knowledge management with local-first controlContextual memory for AI agents in development workflows
FAQ
How does Basic Memory work?
Basic Memory stores knowledge as Markdown files on your disk. It builds a knowledge graph from observations and wikilinks, and provides semantic search. Both you and your AI can read, write, and search these files. It is MCP-native, so it works with any AI client that supports the Model Context Protocol.
Is Basic Memory free?
Yes, the local install is free forever under AGPL-3.0. There is also a cloud subscription at $15/month (with 7-day free trial) that includes sync across devices, hosting, backups, and snapshots. Use code BMFOSS for 20% off for 3 months.
What AI clients does Basic Memory support?
Basic Memory works with Claude, Codex, Cursor, ChatGPT, and any AI client or IDE that speaks MCP (Model Context Protocol).