Top AI Repos — open-source AI, indexed and scored
Top AI Repos tracks AI repositories on GitHub and answers two different questions about each one: is it moving right now, and would you bet a product on it.
Top AI Repos tracks AI repositories on GitHub and answers two different questions about each one: is it moving right now, and would you bet a product on it.
Self-evolving second brain with 33 AI skills, 10 agents, and people CRM. Closed-loop harness: a V-model verification lifecycle where the worker never grades its own homework. Plus paired anti-slop design skills for marketing and product UI. Works with Claude Code, Cursor, Kiro, Gemini CLI, Codex.
| Date | Stars |
|---|---|
| 2026-07-31 | 762 |
| 2026-08-06 | 797 |
Today
+35 stars today
This week
— stars this week
This month
— stars this month
Momentum
175.0
growth rate 0.00%/day
# COG: The Agentic Second Brain That Actually Self-Evolves
**Cognition + Obsidian + Git** — A self-evolving second brain powered by AI agents, markdown files, and version control. No database, no vendor lock-in — just `.md` files that think.
[Quick Start](#quick-start) | [Skills](#skills) | [Features](#features-at-a-glance) | [FAQ](#faq) | [SETUP.md](SETUP.md)
> Works with [Claude Code](https://claude.ai/download) • Antigravity • [Cursor](https://cursor.com/) • [Kiro](https://kiro.dev/) • [Gemini CLI](https://github.com/google-gemini/gemini-cli) • [OpenAI Codex](https://github.com/openai/codex) • any AI that reads markdown
>
> Inspired by [Garry Tan's gstack](https://github.com/garrytan/gstack) and [gbrain](https://github.com/garrytan/gbrain)
```mermaid
graph LR
A[You] -- natural language --> B[AI Agent]
B -- runs --> C[33 Skills]
C -- delegates to --> W[6 Workers]
C -- verified by --> V[4 Read-Only Verifiers]
C -- reads & writes --> D[.md Files]
W -- reads & writes --> D
V -- observes --> D
C -- syncs with --> G[GitHub / Linear / Slack / PostHog]
D --> E[Git]
D --> F[iCloud]
```
> **New to COG?** Watch the [2-minute walkthrough](https://youtube.com/PLACEHOLDER) to see it in action.
## Quick Start
**1. Clone & enter the repo:**
```bash
git clone https://github.com/huytieu/COG-second-brain.git
cd COG-second-brain
```
**2. Run onboarding in your agent:**
| Agent | Command | How it finds skills |
|---|---|---|
| Claude Code | `code .` → "Run onboarding" | `.claude/skills/` |
| Antigravity | Open folder → "Run onboarding" | `.agents/skills/` + `.agents/rules/cog.md` |
| Cursor | Open folder → "Run onboarding" | `.cursor-plugin/` + `.cursorrules` |
| Kiro | Open folder → "setup COG" | `.kiro/powers/` |
| Gemini CLI | `gemini` → `/onboarding` | `GEMINI.md` + `.gemini/commands/` |
| OpenAI Codex | `codex` → "Run onboarding" | `AGENTS.md` |
| Other agents | Point at `AGENTS.md` → "Run onboarding" | `AGENTS.md` |
**Or install via [skills.sh](https://skills.sh):**
```bash
npx skills add huytieu/COG-second-brain
```
Done — COG is personalized and ready in ~2 minutes. See [SETUP.md](SETUP.md) for optional config (Git sync, iCloud, Obsidian Tasks, etc.).
## Agent Support Matrix
COG ships a **full Claude Code surface**, a **full Antigravity surface**, plus **core native surfaces** for Kiro and Gemini CLI, with `AGENTS.md` as the universal fallback for Codex and other markdown-reading agents.
| Surface | Current support | Notes |
|---|---|---|
| Claude Code | 33 native skills + 10 agents (6 workers + 4 verifiers) | Full first-class surface |
| Antigravity | 33 skills + 10 agents (pointer-stub format) | Full surface — thin stubs in `.agents/` delegate to the `.claude/` playbooks, which stay authoritative |
| Cursor | Plugin manifest + rules | `.cursor-plugin/plugin.json` + `.cursorrules` |
| Kiro | 7 native powers | Core workflows today |
| Gemini CLI | 7 native commands | Core workflows today |
| `AGENTS.md` | 33 documented commands | Universal fallback for Codex and other agents |
Before publishing or updating framework files, run `./scripts/validate-agent-surface.sh` to catch drift between manifests, docs, and shipped files. See [docs/AGENT-SUPPORT.md](docs/AGENT-SUPPORT.md) for the detailed support matrix and contributor rules.
## Skills
### Core Skills (Personal Knowledge)
| Skill | What it does | Try saying... |
|---|---|---|
| **onboarding** | Personalize COG for your workflow (run first!) | "Run onboarding" |
| **braindump** | Capture raw thoughts with intelligent classification | "I need to braindump" |
| **daily-brief** | Verified news intelligence (7-day freshness) | "Give me my daily brief" |
| **url-dump** | Save URLs with auto-extracted insights | "Save this URL" |
| **weekly-checkin** | Cross-domain pattern analysis | "Weekly review" |
| **knowledge-consolidation** | Build frameworks from scattered notes | "Consolidate my knowledge" |
| **upExcerpt of 20,552 characters
Read on GitHub
20
5
Claude · @anthropics
4
2
1
Would you bet a product on this? Bounded 0–100 and slow moving.
matched fp:4f001289340addde, topic:ai-agents, topic:agentic