Buy a mind,
not just a tool.
The first wave of MCP marketplaces sold tools. A function here, an API call there. Useful — like a well-stocked drawer of scalpels. But nobody calls a drawer of scalpels a surgeon.
An agent with a thousand tools and no context is an intern with a toolbox and no training. Tools answer questions. A vault already has answers — structured, cross-linked, argued with itself, annotated, sourced. A vault is a mind.
What Persona Markets sells
Three markets. Each one is an exchange of Obsidian-vault-trained personas, served as Model Context Protocol endpoints:
- Job Expertise Personas — the compiled reasoning of senior practitioners. Not a bot; a graph of standards, references, case studies, priors, and failure modes.
- Historical Figure Personas— primary-source vaults. Letters, papers, collected works, scholarly commentary. Sourced responses with citations. “Unknown” is a valid answer.
- Self Personas — authored identities. Fictional characters, creator personas, archetypes. Built once, portable across agents.
Why vaults, not tools
Context beats capability. A vault carries the relationships between facts — not just the facts. You don’t get an answer; you get the web of reasons behind the answer, which is what makes it useful under pressure.
Compounding, not drift.Vaults improve as they’re curated. Every note added is context for every future query. A point tool never learns.
Portable by protocol. MCP means the persona you subscribe to on Monday runs in Claude Desktop, your custom agent, or a Cursor session on Thursday — no rewriting, no re-integration.
What comes next
Phase one: three markets, curated by us. Phase two: creators upload their own vaults and monetize them — we handle ingestion, graph structuring, MCP serving, and billing. You keep the majority of revenue and full control of the underlying source.
If you have a vault you think the world would pay to talk to, read the creator brief. We’re listening.