OttO
OttO is a local-first knowledge graph assistant. Store what you know, connect the dots, and ask anything.
Features
One click
to your brain.
Visual Knowledge Graph
Every idea you add becomes a node. OttO automatically discovers semantic links and surfaces them as an interactive graph you can explore, zoom, and navigate.
AI Agent, Grounded in Your Notes
Ask anything. The built-in agent reasons over your personal knowledge graph using Ollama, OpenAI, or Groq growing the graph as it learns.
Plug Into Any Tool via MCP
OttO exposes a Model Context Protocol server. Connect Claude, Cursor, or any MCP-compatible client and let them query your knowledge graph directly.
How it works
Six ways Otto
works for you.
Classify Information
Otto automatically categorizes every piece of knowledge you add turning raw notes into structured, searchable entries.
Build Connections
Semantic links form between related ideas, revealing relationships you might never have noticed on your own.
Enrich Existing Knowledge
New information doesn't just sit alongside what you know it deepens and refines it automatically.
Research with Other Tools & Save to Otto
Bring in insights from any tool or source and persist them directly into your knowledge graph in one step.
Recall from Memory, Not Rediscovery
Access everything you've learned instantly no need to retrace your steps or re-read old notes ever again.
A Self-Growing Shared Knowledge Base
Otto learns continuously, building a collective intelligence that gets smarter with every interaction.
Quick start
Add OttO to your AI assistant
Paste this snippet into your CLAUDE.md or CURSOR.md to make your AI assistant use OttO automatically.
# Tasks for Every Request Use only English Actively use the OttO MCP tools (locate, spread_search_context, search_plans, save_inference, save_plan, add_knowledge). All usage guidance is in the MCP server instructions. For non-trivial tasks, save key findings with save_inference or save_plan.
Start building
your second brain.
Free. Runs entirely on your machine.
Pricing
Simple, transparent pricing.
Start free. Upgrade when your team is ready.
Personal
Full power of OttO. Bring your own API keys for AI.
- OttO Desktop app
- OttO Core (MCP server)
- Unlimited knowledge nodes
- Visual knowledge graph
- Semantic & spread search
- REST API access
- MCP integration (Claude, Cursor…)
- Bring your own API keys
Enterprise
For teams that need shared knowledge, access control, and dedicated support.
- Everything in Personal
- Team knowledge graph
- Role-based access control
- SSO / SAML
- Custom deployment
- SLA guarantee
- Audit logs
- Dedicated support