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repo for storing the second brain project
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Travis Herbranson 7eafdf3e03 scheduler: honor pipeline_settings (extraction_enabled, window, max_items) 
The dev-side scheduler now snapshots the singleton pipeline_settings row
at the top of run() and applies three DB-driven gates:

- extraction_enabled = false → skip the entire run with a single log line.
  Lets Travis pause extraction from the dashboard without touching the
  config file or restarting anything.
- extraction_active_hours_start/_end → fast-fail if outside the window
  AND (when set) override the static settings.toml [scheduler].window_*
  bounds so the inner loop also respects the dashboard's choice. Either
  side being NULL means "no constraint on that side" — matches the form's
  "leave blank = always active" semantics.
- extraction_max_items_per_run → hard cap on processed items per
  invocation. 0/null means unlimited (existing behavior).

Snapshot semantics are deliberate: a mid-run toggle doesn't half-apply,
same way max_calls_per_hour is tracked locally. Workers re-read on the
next invocation.
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alembic settings: v2 migration + ORM + settings_store helper 2026-05-25 08:11:53 -04:00
config postgres migration: schema, models, embeddings, alembic 2026-05-24 22:46:48 -04:00
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reviews docs: update CLAUDE.md + migration plan to reflect shipped Postgres design 2026-05-24 22:57:31 -04:00
src/second_brain scheduler: honor pipeline_settings (extraction_enabled, window, max_items) 2026-05-25 08:17:44 -04:00
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pyproject.toml web: dashboard + settings editor (HTMX save) + pipeline observability 2026-05-25 08:15:29 -04:00
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README.md

second-brain

A personal knowledge system built on a video/article extraction pipeline and an LLM-maintained wiki (inspired by the Karpathy LLM Wiki pattern).

What it does

  1. Pull — download YouTube videos or fetch web articles
  2. Transcribe — extract transcripts via Whisper (videos) or trafilatura (articles)
  3. Extract — single-shot Claude call produces structured notes per source
  4. Review — web UI to accept or reject extractions
  5. Compile — wiki compiler folds accepted extractions into a living Obsidian vault

Quick start

# Install dependencies
uv sync

# Copy and edit config
cp config/settings.toml config/settings.local.toml

# Queue a source
uv run second-brain add https://www.youtube.com/watch?v=...

# Run the pipeline
uv run second-brain process

# Review in the web UI
uv run second-brain serve

# Compile to wiki
uv run second-brain compile

Domains

Extractions are tagged by domain so the right prompt template is used:

Domain Focus
development Software, programming, systems
content Content creation, video production
business Entrepreneurship, marketing, ops
homelab Self-hosted infra, networking, DevOps

Extractor backends

Two backends, selectable via [extractor].backend in config/settings.toml:

  • cli (default) — shells out to claude -p --output-format json --json-schema .... Runs under your Max OAuth subscription, no per-token billing. The wrapper spawns the CLI in a throwaway tempfile.TemporaryDirectory and strips ANTHROPIC_API_KEY / ANTHROPIC_AUTH_TOKEN from the env so host CLAUDE.md, hooks, and settings don't leak in, and the subscription is used instead of the API key.
  • api — uses the anthropic Python SDK, requires ANTHROPIC_API_KEY. Install with uv sync --extra api (the SDK is an optional dependency).

Requirements

  • Python 3.12+
  • Either the claude CLI on PATH (default backend) or ANTHROPIC_API_KEY (api backend)
  • ffmpeg (for Whisper audio extraction)

In-flight work

  • Postgres + pgvector migration — SQLite is the current backing store but the project is moving to Travis's Postgres instance. Planning questions live in postgres-migration-planning.md; nothing has been migrated yet.