petal-power/wiki-vault
3
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
6722ee735b
wiki-vault/Wiki/Reference/ob1.md
Travis Herbranson 6722ee735b compile: 34 sources since first compile — indexes + 5 entities + memory synthesis refreshed 
Pages touched: Sources/index, Sources/Dev/index, Sources/Homelab/index,
  Wiki/index, Wiki/Reference/index, Wiki/Reference/{ob1,traefik,gitea},
  Wiki/Homelab/proxmox, Wiki/Dev/pbs-hub, Wiki/Dev/ai-memory-architecture
Pages created: none
Entities promoted: none (proposed: trellis, vault-mcp, petalbrain, pbs-hub-mcp, knot-dns, herbyeos)
Synthesis: ai-memory-architecture updated (9->17 sources) for petalbrain consolidation,
  shared public.embeddings, OB1 two-layer + reflection job, JSONL watcher, Trellis
Contradictions flagged: OB1 "Supabase" -> self-hosted pgvector:pg17/petalbrain + Ollama (corrected)
Tags proposed: none
Notes: 8 pipeline test artifacts flagged for cleanup (not deleted); session-note->session-notes
  lint pending; Venture unchanged

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-05-24 21:18:20 -04:00

3.7 KiB
Raw Blame History

type path tags created updated
entity Wiki/Reference
ob1
embeddings
pgvector
automation
2026-05-08 2026-05-24

OB1

What it is

OB1 (Open Brain) is Travis's personal AI memory and retrieval system — a self-hosted pgvector/pgvector:pg17 Postgres store holding embeddings of session content, project notes, and vault content for semantic recall across AI conversations. It is the fast, voluminous, agent-facing half of the two-system memory model; the Wiki/Dev/ai-memory-architecture is the slow, curated, human-facing half. OB1 is forked from the upstream community project NateBJones-Projects/OB1.

Correction (2026-05-24 compile): earlier versions of this page described OB1 as a "Supabase + pgvector" stack. The postgres-consolidation recon proved that's wrong — OB1 has always been a self-hosted pgvector container (homelab-postgres, DB now petalbrain), with embeddings from local Ollama nomic-embed-text (768-d), never Supabase.

Current state

Operational and consolidated into the petalbrain Postgres instance. Key facts as of the May 2026 consolidation:

  • Storage — ob1.thoughts (raw captures) + ob1.reflections (synthesized lessons); embeddings live in the shared public.embeddings table (HNSW, vector_cosine_ops, m=16/ef_construction=64), 512-token chunks / 64-token overlap
  • Two-layer model — raw captures + a daily reflection job (claude-sonnet-4-6 via Anthropic API direct) that synthesizes generalizable lessons, mirroring the wiki's Sources/Wiki split
  • Ambient capture — the Sources/Homelab/ob1-jsonl-watcher tails Claude Code / Cowork JSONL session files and posts turn-pairs to OB1's capture_thought (replaces the earlier "n8n parallel write" idea)
  • Embedding model — Ollama nomic-embed-text (768-d), local; switching requires a full re-embed
  • Tailscale-only access — no public endpoint
  • ob1-watcher / ob1-enricher daemons; enricher has a known PENDING_QUERY loop bug pending a fix before restart

Where it lives

  • Postgres — petalbrain DB on homelab-postgres (pgvector:pg17), Proxmox; schema ob1, owned by the ob1_mcp service role
  • Embeddings — Ollama (nomic-embed-text) on the homelab
  • Capture — ob1-jsonl-watcher daemon on herbydev reading ~/.claude session logs
  • Access — Tailscale-only

Related projects

History

  • 2026 — Architecture research: pgvector, harness vs model layers, Poolside/Pi.dev reviewed
  • 2026 — Deployment (Phases 0–6); pgvector container + Ollama embeddings; Tailscale-only
  • 2026-05-14 — Embedding dim migrated 1536→768 for nomic-embed-text; ob1-jsonl-watcher plan written
  • 2026-05-15 — Consolidated into petalbrain; ob1.thoughts + shared public.embeddings; reflection layer designed
  • 2026-05-18 — Dispatch subprocess-leak incident reinforced the case for harness-owned subprocess lifecycle