Skip to content
AIOSMarketplace
SB

AIOS Market editorial rating

Our own assessment, scored on published criteria. Separate from buyer reviews.

4.6 / 10

Skill pack
Usefulness: 2 Helpful
Definition and evidence

Skills you trigger one at a time.

Evidence: One skill that generates a build plan; the proactive heartbeat exists only in the system you build from it

Autonomy weight 15%
3 / 10
Depth weight 15%
4 / 10
Ease of setup weight 15%
3 / 10
Ownership and privacy weight 10%
9 / 10
Value for money weight 15%
6 / 10
Updates and support weight 10%
4 / 10
Security weight 10%
3 / 10
Maturity and traction weight 10%
6 / 10

A free starter that helps you plan your own second-brain build with one guided skill, from a well-known AI educator. There is no licence file, so reuse terms are unclear, and the proactive features exist only in what you build yourself. Useful as a learning project, not a finished system.

Security: Not scanned. Not scanned: the repository has no licence file, so reuse terms are unclear.

Rated on

How we rate

The facts

As stated by the maker. Anything missing is marked Not stated.
Delivery
Installs on your machine
GitHub
795 GitHub stars
Runs on
macOS, Linux, Windows
Works with
Claude Code
You'll need
Not stated
Install
Clone the repo, copy the create-second-brain-prd skill folder into your project, fill the template
Install time
Not stated
Difficulty
Technical
Company size
Solo
Updates
Not stated
Licence
Not stated
Seats included
Not stated
Team sharing
Not stated
Integrations
Not stated
Data
Local; you build and host the system yourself
Support
GitHub issues
Checks
Security review: not completed. Automated checks, not a guarantee.

What it takes off your plate

An open-source Claude Code skill that takes a filled-in requirements template and generates a phased PRD for building a personal second brain. The plan covers memory, hooks, integrations, a heartbeat and daily reflection, and deployment. It is a blueprint generator, not a ready-made system.

Read the full description

What it is. An open-source Claude Code skill that takes a filled-in requirements template and generates a phased PRD for building a personal second brain. The plan covers memory, hooks, integrations, a heartbeat and daily reflection, and deployment. It is a blueprint generator, not a ready-made system.

Pricing. Free; no LICENSE file found on main branch Licence. Not stated Where it runs. Claude Code

Facts checked on 2026-10-06 from the maker's own site: https://github.com/coleam00/second-brain-starter. Not stated by the maker on that date: licence, github.pushedAt, github.sizeKb, github.avatarUrl, installTime, latestRelease.

What's inside

No agent breakdown has been provided.

Plans

1 plan

Prices are the maker's, as published on their site on Oct 6, 2026. Buy on the maker's site.

Default plan

Open source

Free

  • PRD-generating skill
  • Requirements template

Compatible with

Compatibility has not been stated.

Buyer reviews

No buyer reviews yet

Buyer reviews open when the maker sells here.

Similar listings

Operating system

AIS-OS

By Nate Herk

Free starter kit that turns Claude Code or Codex into a personal AI operating system

Skill pack
AIOS Market rating6.5 /10
Level 2, Helpful

Listed by AIOS Market

Free

Operating system

CORE

By RedPlanetHQ (Poozle Inc.)

Self-hosted personal AI OS with a memory graph, tasks and a scratchpad that triggers agents

Open-source framework
AIOS Market rating6.8 /10
Level 4, Autonomous

Listed by AIOS Market

Free

By Nous Research

Open-source self-improving agent with memory, scheduling and many messaging channels

Open-source framework
AIOS Market rating7.6 /10
Level 4, Autonomous

Listed by AIOS Market

Self-updating

Free, or $200 a month

By Agently

Hosted executive assistant that triages mail and keeps a unified to-do list

Hosted AI team (SaaS)
AIOS Market rating6.1 /10
Level 4, Autonomous

Listed by AIOS Market

Self-updating

Free

Operating system

All Sorted

By All Sorted

The AI operating system installed for you.

Full operating system (installed)
AIOS Market rating7.1 /10

Made by the team behind AIOS Market.

Level 4, Autonomous
Self-updating

$3,499

Operating system

Claude CoWork OS

By Better Creating

Templated folder system, onboarding coach and skills for the Claude desktop app

Full operating system (installed)
AIOS Market rating5.2 /10
Level 4, Autonomous

Listed by AIOS Market

$149 once

Second Brain StarterVisit official site