What is project-brief?

A structured Markdown summary of a Claude Project. Markdown is plain text with simple formatting; the summary covers goals, architecture, files, instructions, memory, current status, decisions, and its place in a wider system.

Use it to document a project, inventory its knowledge files, capture decisions, or create an uploadable context document.

It creates a reusable record of a project so its important context can be reviewed or added to another project.

project-brief — Skill for Claude Code by drayline/rootnode-skills

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add drayline/rootnode-skills --skill project-brief

Clone the repo

git clone --depth 1 https://github.com/drayline/rootnode-skills

Made for: Claude Code.

Or install rootnode-projects, the plugin that ships this one along with the rest of its 7 skills.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/drayline/rootnode-skills/project-brief/github.svg)](https://agentmods.dev/skills/drayline/rootnode-skills/project-brief)

Your own site

<a href="https://agentmods.dev/skills/drayline/rootnode-skills/project-brief"><img src="https://agentmods.dev/badge/skills/drayline/rootnode-skills/project-brief/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/drayline/rootnode-skills/project-brief"><img src="https://agentmods.dev/badge/skills/drayline/rootnode-skills/project-brief.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 178 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,709 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 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.

Model	Per session	Once invoked
Fable 5.1	$0.00178	$0.02709
Opus 5.5	$0.00071	$0.01084
Sonnet 5.5	$0.00036	$0.00542
Haiku 4.5	$0.00018	$0.00271

Measured 3d ago against content hash 6633a062ee0c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

project-brief scanned grade A with 0 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 3d 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/rootnode-projects/skills/project-brief/SKILL.md · 193 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Files

What ships with it

1 file 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.

references/brief-template.md 10 KB

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.

3d ago Changed · +1 lines 6633a062ee0c
4d ago First seen · 192 lines · 178 tokens per session scan A 387184bfe06a

Subscribe to this mod's changes

project-brief is a skill published in the GitHub repository drayline/rootnode-skills (40 stars, last pushed 4d ago), with no licence file. It adds 178 tokens to every session and 2,709 once invoked, about $0.0007 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-11-03.

Claude Code Documents Project management agent-skills ai-tools anthropic awesome-claude-prompts claude-ai

project-brief next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
project-briefdrayline/rootnode-skills	Skill	40	4d ago	none	A	178	Claude Code
impact-report-writertravisjneuman/.claude	Skill	107	2d ago	MIT	A	43	Claude Code, Codex
investment-memo-generatortravisjneuman/.claude	Skill	107	2d ago	MIT	A	37	Claude Code, Codex
codebase-documentertravisjneuman/.claude	Skill	107	2d ago	MIT	A	42	Claude Code
agent-documentation-writertravisjneuman/.claude	Skill	107	2d ago	MIT	A	41	Claude Code
document-skillstravisjneuman/.claude	Skill	107	2d ago	MIT	A	44	Claude Code, Codex
docstravisjneuman/.claude	Skill	107	2d ago	MIT	A	240	Claude Code, Codex