---
type: entity
path: Wiki/Reference
tags:
  - ob1
  - embeddings
  - pgvector
  - automation
created: 2026-05-08
updated: 2026-05-08
---

# OB1

## What it is

OB1 is Travis's personal AI memory and retrieval system — a Supabase + pgvector stack that stores embeddings of project notes, session logs, and vault content to enable semantic recall across AI conversations. Named as a reference to the "Old Ben" Kenobi archetype of a wise, reliable memory keeper. OB1 sits alongside the wiki-vault in the broader second-brain architecture: the vault provides structured human-readable knowledge, OB1 provides fast semantic search for AI context injection.

## Current state

In active deployment across Phases 0–6. Key architectural decisions (from the addendum):
- **Tailscale-only access** — Phase 4 deferred public endpoint; OB1 only reachable over Tailscale mesh
- **Parallel write pipeline** — n8n writes new vault notes to both wiki-vault and OB1 simultaneously
- **Phase 7 (planned)** — Dispatch pre-compact hook wires Lovebug's context windows into OB1 for automatic memory ingestion before context is dropped

The AI memory architecture research session explored harness-vs-model layering, Poolside and Pi.dev approaches, and the split between episodic (session notes) and semantic (wiki entity) memory modes.

## Where it lives

- **Supabase instance** — hosted in homelab (Proxmox), contains pgvector extension
- **Ingest pipeline** — n8n on PBS Docker stack
- **Query interface** — planned: homelab MCP server exposes OB1 recall as a tool
- **Access** — Tailscale-only (no public endpoint)

## Related projects

- [[Sources/Homelab/ob1-main-deployment|ob1-main-deployment]] — full deployment plan (Phases 0–6)
- [[Sources/Homelab/ob1-deployment|ob1-deployment]] — addendum (Tailscale, parallel write, Phase 7)
- [[Sources/Dev/ai-memory-architecture-research|ai-memory-architecture-research]] — architecture research session
- [[Sources/Dev/second-brain|second-brain]] — wiki-vault + OB1 second-brain pattern
- [[Sources/Homelab/homelab-mcp-server|homelab-mcp-server]] — MCP server will expose OB1 recall
- [[Wiki/Reference/n8n|n8n]] — ingest pipeline
- [[Wiki/Reference/tailscale|tailscale]] — access layer
- [[Wiki/Dev/ai-memory-architecture|ai-memory-architecture]] — synthesis page

## History

- **2026** — Architecture research session: pgvector, harness vs model layers, Poolside/Pi.dev reviewed
- **2026** — Full deployment plan written (Phases 0–6, Supabase + pgvector)
- **2026** — Addendum locked: Tailscale-only, parallel n8n write, Phase 7 Dispatch hook
- **Planned** — MCP server integration to expose OB1 recall as homelab tool