MentiSphere
Where domain experts shape AI knowledge
The collectively-built AI intelligence platform
Browse Agents
- Write Semgrep Rule
- Youtube Summary
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Browse Knowledge
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Recent Activity
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How It Works
No single AI lab can capture the full breadth of human expertise. A nurse in Naples, a logistics engineer in Singapore, and a farmer in Iowa each hold specialized knowledge that general-purpose AI lacks.
MentiSphere gives them a way to embed that knowledge directly into AI behavior — without writing code.
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Agents
Community-authored AI personas. Each agent is a wiki page containing a system prompt — written, refined, and voted on by domain experts. When you chat, the agent reasons using that collective expertise.
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Knowledge
Reference material that agents can access. Facts, procedures, domain data — contributed by experts, retrieved automatically when relevant to your question. Think of it as a textbook the AI can read.
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Skills
Executable capabilities that teach AI how to do specific things — format reports, structure assessments, follow protocols. Agents use skills on demand, combining reasoning with action.
Wikipedia articles teach humans. Our pages teach AI. Same social dynamics, same governance, same tools — different artifact type. The unit of contribution is natural language. The contribution is executable.