Home / huytieu / cog-second-brain · GitHub

.cursorrules Cursor ruleA

.cursorrules from huytieu/cog-second-brain is a Cursor rule: instructions the Cursor agent follows in that repo.

Install it, pinned
mdr add huytieu/cog-second-brain/.cursorrules@git:20261002.8be6ee9

Pins git:20261002.8be6ee9 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 14 of 14 checks passed
Kind
Cursor rule
Repository
huytieu/cog-second-brain
Path
.cursorrules
Versions recorded
5
Latest version
git:20261002.8be6ee9, committed Oct 2, 2026
First version recorded
Apr 16, 2026
Size
3,463 bytes
Repository stars
1,329
License
MIT

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# COG Second Brain — Cursor Rules
# This is the Cursor-compatible version of CLAUDE.md
# COG: Cognition + Obsidian + Git — a self-evolving agentic second brain
# Inspired by Garry Tan's gstack and gbrain patterns

## Skills

COG exposes 17 skills via `.claude/skills/*/SKILL.md`. Each skill has a `name` and `description` in YAML frontmatter. Use AGENTS.md as the universal command reference.

## Worker Agents

10 agents live in `.claude/agents/`: 6 workers handle data-heavy tasks, 4 read-only verifiers check the result against acceptance criteria by observing the artifact. The lead session handles reasoning and synthesis.

- worker-data-collector: Structured extraction from GitHub, Slack, Jira, Linear
- worker-researcher: Web research with source citations
- worker-file-ops: Vault file operations, metadata, profiles
- worker-executor: Pre-approved mutations (Jira, Linear, APIs)
- worker-publisher: Publishing to Slack, Confluence, Notion
- brief-people-updater: Batch-update people profiles

## Brain-First Protocol

Before answering questions about people, projects, strategy, or decisions:
1. Read relevant notes from `05-knowledge/` first
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add huytieu/cog-second-brain/.cursorrules@sha256:671f4ba49716740f

The line at the top of this page pins the label git:20261002.8be6ee9, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_qfdcs5xp6ql364fo.svg)](https://markdownregistry.com/a/art_qfdcs5xp6ql364fo)

4 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 5 versions of this file, between Apr 16, 2026 and Oct 2, 2026, about one every 42 days.

versioncommittedcommitsizeaudit
git:20261002.8be6ee9 latest2026-10-02 8be6ee9 3,463 BA view · diff
git:20260824.44fa6872026-08-24 44fa687 3,163 BA view · diff
git:20260818.dc5aeb62026-08-18 dc5aeb6 2,378 BA view · diff
git:20260727.74a0cf72026-07-27 74a0cf7 1,954 BA view · diff
git:20260416.034af4c2026-04-16 034af4c 1,864 BA view

Audit of the latest version

A  14 of 14 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Size between 200 bytes and 200 KB (3463 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

huytieu/cog-second-brain · 1,329 stars · license MIT · pushed 2026-10-23 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_qfdcs5xp6ql364fo
GET https://markdownregistry.com/api/v1/resolve?ref=huytieu/cog-second-brain/.cursorrules
GET https://markdownregistry.com/api/v1/blob/671f4ba49716740fbff083585779e2111389e078aa0a1ddafd07f5917e300288

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: Cursor rules vs AGENTS.md · which agent file does what.

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