---
title: "cog-second-brain"
description: "Self-evolving second brain with 35 AI agent skills, 10 agents, and people CRM. Closed-loop harness: a V-model verification lifecycle (spec to evidence, criterion-traced checkpoints), read-only verifier agents that observ"
canonical: https://agentpluginsdirectory.com/plugins/cog-second-brain
last-updated: 2026-09-21
---

# cog-second-brain
Self-evolving second brain with 35 AI agent skills, 10 agents, and people CRM. Closed-loop harness: a V-model verification lifecycle (spec to evidence, criterion-traced checkpoints), read-only verifier agents that observe artifacts instead of trusting worker summaries, risk lanes, multi-session ultragoals with a north-star acceptance gate, plus craft skills for writing, visual work, and a paired anti-slop design system for marketing and product UI. Works with Claude Code, Antigravity, Cursor, Kiro, Gemini CLI, Codex, and any Agent Plugins conformant client.
- Slug: cog-second-brain
- Publisher: Huy Tieu
- Repository: https://github.com/huytieu/COG-second-brain
- Manifest: plugin.json
- Version: 3.13.0
- License: MIT
- Category (editorial): productivity
- Skills: 35 (auto-research, braindump, closed-loop, comprehensive-analysis, content-factory, create-user-story, daily-brief, daily-journal, data-forms, editorial-illustrations, export-open-issues, generate-prd, generate-release-notes, harvest, knowledge-consolidation, loop-engineering, meeting-transcript, memory-hygiene, museum-art, no-ai-slop, onboarding, product-ui-taste, publish-to-confluence, retro, review-cockpit, scout, slop-gate, taste-skill, team-brief, ultragoal, update-cog, update-knowledge-base, url-dump, voice-baseline, weekly-checkin)
- MCP servers: 0
- Stars: 1207
- Repository created: 2025-10-15
- Repository last pushed: 2026-09-18
- Publisher type: User
- Listing: https://agentpluginsdirectory.com/plugins/cog-second-brain
- Schema: https://agent-plugins.org/schemas/1.0.0/plugin.schema.json

## What cog-second-brain does, in the publisher's words

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.

> Works with Claude Code • Antigravity • Cursor • Kiro • Gemini CLI • OpenAI Codex • any AI that reads markdown > > Inspired by Garry Tan's gstack and gbrain

From the project README, punctuation lightly normalized. Full text: https://raw.githubusercontent.com/huytieu/COG-second-brain/HEAD/README.md

## Skills

- auto-research: Deep strategic research engine: decomposes questions into parallel research threads, spawns multiple agents, and synthesizes into actionable strategic analysis
- braindump: Quick capture of raw thoughts with intelligent domain classification and competitive intelligence extraction
- closed-loop: Run one task through the V-model verification loop: CP-2 plan → CP-3 build → CP-3v component verify → CP-4 integration verify (full lane) → CP-5 acceptance. The worker never grades its own homework; evidence rows trace back to AC-n. Opt-in: invoke with /closed-loop or by asking for the closed loop,…
- comprehensive-analysis: Deep-dive 7-day analysis across all data sources for weekly reviews, board prep, and strategic planning
- content-factory: Autonomous content pipeline: scout announcements in your field, triage by trend momentum and personal angle, produce posts/blogs/videos in your voice with ledger-based dedup, hard volume caps, and screenshot-verified publishing
- create-user-story: Create user stories with duplicate checking across any project tracker (Linear, GitHub Issues, Jira)
- daily-brief: Generate personalized news intelligence with verified sources (7-day freshness requirement)
- daily-journal: A passive daily work journal that Claude keeps FOR you so you never have to write it yourself. Append short entries after meaningful work (what was done, what you focused on, artifacts touched) to 01-daily/journal/YYYY-MM-DD.md. Run a guided reflection at night or in the morning. Use when you run /…
- data-forms: Pick the right way to represent a dataset so a reader gets the finding in three seconds, a catalog of 20+ chart and diagram forms with when-to-use and failure modes, plus the encoding decisions that make any of them readable (takeaway headline, direct labels, kill the axis, highlight-and-mute, sho…
- editorial-illustrations: Generate meaning-carrying editorial data-illustrations in the monotykamary / Linear aesthetic (near-black grayscale, Inter display + mono labels, hairline framed figures) with a single coral accent. This is a GENERATIVE GUIDE, not a template gallery: it teaches the "claim -> geometry" method so any…
- export-open-issues: Audit and export open issues from any project tracker with summary analysis and vault archival
- generate-prd: Generate product requirements documents with optional publishing to Confluence or other wiki platforms
- generate-release-notes
- harvest
- knowledge-consolidation
- loop-engineering
- meeting-transcript
- memory-hygiene
- museum-art
- no-ai-slop
- onboarding
- product-ui-taste
- publish-to-confluence
- retro
- review-cockpit
- scout
- slop-gate
- taste-skill
- team-brief
- ultragoal
- update-cog
- update-knowledge-base
- url-dump
- voice-baseline
- weekly-checkin

Descriptions come from the frontmatter of each SKILL.md, punctuation lightly normalized.