# GBrain

> GBrain is a personal knowledge brain and GStack mod for agent platforms. Pluggable engines (PGLite default, Postgres+pgvector for scale), contract-first operations, 26 fat-markdown skills. Teaches agents brain ops, ingestion, enrichment, scheduling, identity, and access control.

Repo: https://github.com/garrytan/gbrain

## Core entry points

- [AGENTS.md](https://raw.githubusercontent.com/garrytan/gbrain/master/AGENTS.md): Start here if you are not Claude Code. Install order, trust boundary, skill resolver, config/debug/migration pointers.
- [CLAUDE.md](https://raw.githubusercontent.com/garrytan/gbrain/master/CLAUDE.md): Architecture reference. Key files, trust boundaries, engine factory, test layout.
- [INSTALL_FOR_AGENTS.md](https://raw.githubusercontent.com/garrytan/gbrain/master/INSTALL_FOR_AGENTS.md): 9-step agent installation.
- [skills/RESOLVER.md](https://raw.githubusercontent.com/garrytan/gbrain/master/skills/RESOLVER.md): Skill dispatcher. Read first for any task.
- [README.md](https://raw.githubusercontent.com/garrytan/gbrain/master/README.md): Project overview, benchmarks, 30-minute setup.

## Configuration

- [docs/ENGINES.md](https://raw.githubusercontent.com/garrytan/gbrain/master/docs/ENGINES.md): PGLite vs Postgres trade-off and when to migrate.
- [docs/GBRAIN_RECOMMENDED_SCHEMA.md](https://raw.githubusercontent.com/garrytan/gbrain/master/docs/GBRAIN_RECOMMENDED_SCHEMA.md): MECE directory structure (people/, companies/, concepts/).
- [docs/guides/live-sync.md](https://raw.githubusercontent.com/garrytan/gbrain/master/docs/guides/live-sync.md): Incremental markdown sync setup.
- [docs/guides/cron-schedule.md](https://raw.githubusercontent.com/garrytan/gbrain/master/docs/guides/cron-schedule.md): Recurring job scheduling.
- [docs/guides/minions-deployment.md](https://raw.githubusercontent.com/garrytan/gbrain/master/docs/guides/minions-deployment.md): Deploying the gbrain jobs worker: crontab + watchdog, inline --follow, systemd/Procfile/fly.toml, upgrade checklist.
- [docs/guides/quiet-hours.md](https://raw.githubusercontent.com/garrytan/gbrain/master/docs/guides/quiet-hours.md): Notification hold + timezone-aware delivery.
- [docs/mcp/DEPLOY.md](https://raw.githubusercontent.com/garrytan/gbrain/master/docs/mcp/DEPLOY.md): MCP server deployment.

## Debugging

- [docs/GBRAIN_VERIFY.md](https://raw.githubusercontent.com/garrytan/gbrain/master/docs/GBRAIN_VERIFY.md): 7-check post-setup verification. Start here when something feels off.
- [docs/guides/minions-fix.md](https://raw.githubusercontent.com/garrytan/gbrain/master/docs/guides/minions-fix.md): Troubleshooting the Minions job queue.
- [docs/integrations/reliability-repair.md](https://raw.githubusercontent.com/garrytan/gbrain/master/docs/integrations/reliability-repair.md): Data integrity recovery.

## Migrations

- [docs/UPGRADING_DOWNSTREAM_AGENTS.md](https://raw.githubusercontent.com/garrytan/gbrain/master/docs/UPGRADING_DOWNSTREAM_AGENTS.md): Patches for downstream agent skill forks. One section per release.
- [skills/migrations/](https://raw.githubusercontent.com/garrytan/gbrain/master/skills/migrations/): Per-version (v0.5.0 - v0.14.1) agent-executable migration instructions.
- [CHANGELOG.md](https://raw.githubusercontent.com/garrytan/gbrain/master/CHANGELOG.md): Release-summary voice + itemized changes + self-repair block per version.

## Philosophy

- [docs/ethos/THIN_HARNESS_FAT_SKILLS.md](https://raw.githubusercontent.com/garrytan/gbrain/master/docs/ethos/THIN_HARNESS_FAT_SKILLS.md): Why skills live in markdown.
- [docs/ethos/MARKDOWN_SKILLS_AS_RECIPES.md](https://raw.githubusercontent.com/garrytan/gbrain/master/docs/ethos/MARKDOWN_SKILLS_AS_RECIPES.md): Homebrew for Personal AI.

## Optional

- [docs/designs/](https://raw.githubusercontent.com/garrytan/gbrain/master/docs/designs/): Forward-looking designs.
- [docs/architecture/infra-layer.md](https://raw.githubusercontent.com/garrytan/gbrain/master/docs/architecture/infra-layer.md): Shared infra patterns.

## Operational tips

- `gbrain doctor [--json] [--fast] [--fix]` - built-in health checks.
- `gbrain orphans [--json]` - pages with zero inbound wikilinks.
- `gbrain repair-jsonb [--dry-run]` - repair v0.12.0 double-encoded JSONB rows.
- `gbrain upgrade` runs post-upgrade + apply-migrations.