agentmods.dev

second-brain-starter: Skill for Claude Code

.claude/skills/create-second-brain-prd/SKILL.md

create-second-brain-prd is a skill for Claude Code from coleam00/second-brain-starter. It costs 82 tokens per session (3,754 once invoked), scanned D, original, no licence file.

A planning skill that creates a product requirements document (PRD), which describes what to build and how to plan it, for a personalised Second Brain system.

In plain words
What is it for?
Use it after completing my-second-brain-requirements.md, or when asking to create a Second Brain PRD or build plan.
Why use it?
It turns a completed requirements template into a more concrete build plan, so the project can move from ideas to implementation.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter.

This is coleam00/second-brain-starter's own configuration. It tells Claude Code how to work on second-brain-starter itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything second-brain-starter configures →

not rated 875repo +17 5mo ago D scan 82 tokens no licence
View source ↗ coleam00/second-brain-starter
Reuse

Borrowing it

Nothing to install: this file belongs to coleam00/second-brain-starter. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/coleam00/second-brain-starter/main/.claude/skills/create-second-brain-prd/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/coleam00/second-brain-starter

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for create-second-brain-prd

README.md
[![agentmods](https://agentmods.dev/badge/skills/coleam00/second-brain-starter/create-second-brain-prd/github.svg)](https://agentmods.dev/skills/coleam00/second-brain-starter/create-second-brain-prd)
Your own site
<a href="https://agentmods.dev/skills/coleam00/second-brain-starter/create-second-brain-prd"><img src="https://agentmods.dev/badge/skills/coleam00/second-brain-starter/create-second-brain-prd/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for create-second-brain-prd

Your own site · 80×15
<a href="https://agentmods.dev/skills/coleam00/second-brain-starter/create-second-brain-prd"><img src="https://agentmods.dev/badge/skills/coleam00/second-brain-starter/create-second-brain-prd.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 82 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,754 The whole file, excluding the scripts and references it only reads on demand.
Security scan D 3 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00082 $0.03754
Opus 5.5 $0.00033 $0.01502
Sonnet 5.5 $0.00016 $0.00751
Haiku 4.5 $0.00008 $0.00375

Measured 2mo ago against content hash 59922caa3818, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade D, and why

create-second-brain-prd scanned grade D with 3 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

- Command guardrails based on their Security Boundaries answers. Implementation must include a named `DANGEROUS_BASH_PATTERNS` list in `shared.py` with 30+ patterns covering destructive operations (`rm -rf`, `dd`, `mkfs`

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

- Command guardrails based on their Security Boundaries answers. Implementation must include a named `DANGEROUS_BASH_PATTERNS` list in `shared.py` with 30+ patterns covering destructive operations (`rm -rf`, `dd`, `mkfs`

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- Command guardrails based on their Security Boundaries answers. Implementation must include a named `DANGEROUS_BASH_PATTERNS` list in `shared.py` with 30+ patterns covering destructive operations (`rm -rf`, `dd`, `mkfs`
.claude/skills/create-second-brain-prd/SKILL.md · 145 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2mo ago First seen · 145 lines · 82 tokens per session scan D 59922caa3818

Subscribe to this mod's changes

create-second-brain-prd is a skill published in the GitHub repository coleam00/second-brain-starter (875 stars, last pushed 5mo ago), with no licence file. It adds 82 tokens to every session and 3,754 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it D with 3 findings (asks for root, recursive force delete, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Memory and contextPlanning
Related

create-second-brain-prd compared with skills from other repositories

create-second-brain-prd next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
create-second-brain-prdcoleam00/second-brain-starterSkill8755mo agononeD82Claude Code
knowledge-ingestopenclaw/openclawSkill394kyesterdayMITA80Claude Code, Codex
mem0-oss-to-platformmem0ai/mem0Skill68k2d agoApache-2.0A217Claude Code, Codex
forgetasgeirtj/system_prompts_leaksSkill71k2d agoCC0-1.0A74Claude Code, Codex
Cortexdanielmiessler/LifeOSSkill20kyesterdayMITA184Claude Code
memoryopensquilla/opensquillaSkill7.1k6d agoApache-2.0A44Claude Code, Codex
ha-data-storesshiwenwen/hope-agentSkill1.9kyesterdayMITA115Claude Code, Codex