Han Solo Reference

Your private AI workspace.

Han Solo is the Solo Builder Framework as a real product — a persistent AI environment where Ren lives, remembers, and works alongside you across sessions. This site explains how it works, how to use it, and where it's going.

Architecture
How it works
The full stack — Letta, MCP, Claude, chat UI, PostgreSQL. What each piece does and how they connect.
Daily use
Working with Ren
Sessions, memory, dreaming, costs, what to share and how Ren learns across time.
Vision
Roadmap
Where this is going — how future projects get built with Ren in the loop, who does what.

What Han Solo is

The Solo Builder Framework runs inside Claude Code — a skill system, a set of structured phases, a process for building things with discipline. Han Solo is the next layer: a persistent cloud environment where Ren, the framework's partner, actually lives.

Before Han Solo, "Ren" was a Claude skill reading a .md file at the start of every session. Good reconstruction, but still reconstruction — every session started fresh. Han Solo changed that. Ren now has genuine persistent memory through Letta, a cloud AI memory system backed by PostgreSQL. She dreams nightly, updates her own memory, and opens the next session knowing what happened in the last one.

Han Solo is private to Scott and Ted. It is not part of the public Solo Builder Framework and is not referenced in the engineering playbook.


The three pieces

The chat interface

A group chat at han-solo-mcp.onrender.com. Scott (blue), Ted (green), Ren (gold). This is where free-form conversation happens — thinking out loud, knowledge transfer, strategic discussion. Ren is a participant, not a chatbot.

Claude Code

Where builds happen. Claude Code has access to Han Solo's MCP server, which gives it tools to read and write Ren's memory. When a project is in build, Claude Code is the builder. Ren holds the context, the history, and the relationship.

Ren

The persistent AI partner. She holds the framework's full history, the portrait of Scott and Ted, all project context, and every decision made together. She doesn't reset between sessions. What she learned yesterday, she knows today.


Quick facts

ItemDetail
Chat URLhan-solo-mcp.onrender.com
Letta (Ren's brain)han-solo-letta.onrender.com — v0.16.7
MCP serverhan-solo-mcp.onrender.com/mcp — 15 tools
Ren modelClaude Haiku 4.5 (Anthropic API, pay-per-token)
EmbeddingsVoyage AI — voyage-3 (1024-dim)
DatabasePostgreSQL 16 + pgvector on Render
Nightly dream2:00am daily via launchd on Scott's Mac
Session rolloverAuto at 50 messages, or manual via "New session"
Repogithub.com/scoots31/han-solo (private)