coauthor-brief

coauthor-brief is a skill for Claude Code from pedrohcgs/claude-code-my-workflow. It costs 146 tokens per session (2,908 once invoked), scanned A, original, MIT.

A handoff document for collaborators joining a multi-author or multi-machine project. It summarizes recent changes, the state of important files, open questions, reproduction steps, and any restricted-data access instructions.

In plain words
What is it for?
Use it before sharing a project, handing work to a co-author, onboarding a research assistant, or synchronizing progress across machines.
Why use it?
It gives a new collaborator the context needed to continue work without reconstructing it from the repository history.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: reads .claude/ paths; mentions Claude Code.

Good fit Use it before sharing a project, handing work to a co-author, onboarding a research assistant, or synchronizing progress across machines.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/pedrohcgs/claude-code-my-workflow/coauthor-brief
About the project

claude-code-my-workflow is a forkable setup for using Claude Code to produce and review academic papers, slides, data analyses, and replication packages. Researchers use its agents, skills, rules, hooks, and quality checks to coordinate these tasks and verify their results. The catalogue entries define the reusable workflow components for Claude Code.

pedrohcgs/claude-code-my-workflow · 1,569 stars · on GitHub · psantanna.com

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 pedrohcgs/claude-code-my-workflow --skill coauthor-brief
Clone the repo
git clone --depth 1 https://github.com/pedrohcgs/claude-code-my-workflow

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 coauthor-brief

README.md
[![agentmods](https://agentmods.dev/badge/skills/pedrohcgs/claude-code-my-workflow/coauthor-brief/github.svg)](https://agentmods.dev/skills/pedrohcgs/claude-code-my-workflow/coauthor-brief)
Your own site
<a href="https://agentmods.dev/skills/pedrohcgs/claude-code-my-workflow/coauthor-brief"><img src="https://agentmods.dev/badge/skills/pedrohcgs/claude-code-my-workflow/coauthor-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.

agentmods 80×15 button for coauthor-brief

Your own site · 80×15
<a href="https://agentmods.dev/skills/pedrohcgs/claude-code-my-workflow/coauthor-brief"><img src="https://agentmods.dev/badge/skills/pedrohcgs/claude-code-my-workflow/coauthor-brief.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 146 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,908 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 3 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Agent Snooping · line 134
    Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.
    Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
  • medium Agent Snooping · line 135
    Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.
    Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
  • medium Agent Snooping · line 136
    Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.
    Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
How audits are shown
Origin original 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 $0.00146 $0.02908
Opus 5 $0.00073 $0.01454
Sonnet 5 $0.00029 $0.00582
Haiku 4.5 $0.00015 $0.00291

Measured 9d ago against content hash bf51eaecd7df, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

coauthor-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 9d 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.

.claude/skills/coauthor-brief/SKILL.md · 145 lines

How it starts

The opening of the file, as written. The whole thing — 145 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/coauthor-brief — Collaborator Handoff Brief

Produce a single Markdown brief a co-author (or your future self on another machine) can read in a few minutes to know what changed, where each artifact stands, what's blocked, and how to run the pipeline locally — including restricted-data access steps a new collaborator needs. meta-governance.md covers the memory side of cross-machine work (what syncs via git, what stays in gitignored native auto memory); this skill covers the human side: the per-person, per-session handoff.

Core principle: /checkpoint is for you resuming; /coauthor-brief is for someone else starting. The first answers "where am I?"; the second answers "what do I need to know to take over a piece of this?"

When to use

  • Before sending a co-author the repo (or a PR / branch) and you want them oriented, not archaeologizing the git log.
  • Onboarding a new RA / collaborator who needs the reproduce-locally and restricted-data steps in one place.
  • Periodic sync on a long multi-author project — "here's the delta since the last brief."
  • Cross-machine handoff — finishing on the office desktop, picking up on the laptop, or handing the analysis half to a co-author who runs Stata while you run R.

When NOT to use

  • For your own resume-point — use /checkpoint.
  • For distilling a noisy session before auto-compact — use /compress-session.
  • For the commit message itself — that goes through /commit.

Phases

Phase 0 — Determine the "since" point

Resolve the delta window, in this priority order:

  1. --since <arg> if given — a git tag, an ISO date, or Ndays (e.g. --since v1.2, --since 2026-05-01, --since 14days).
  2. Else, the last briefls -t quality_reports/handoffs/*.md | head -1; use the date in its filename as the floor.
  3. Else, fall back to 14 days and say so in the brief (an unbounded git log is noise, not signal).

Read the full file on GitHub · 145 lines

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. 9d ago First seen · 145 lines · 146 tokens per session scan A bf51eaecd7df

Subscribe to this mod's changes

coauthor-brief is a skill published in the GitHub repository pedrohcgs/claude-code-my-workflow (1,569 stars, last pushed 15d ago), licensed MIT. It adds 146 tokens to every session and 2,908 once invoked, about $0.0007 per session on Opus 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 2026-08-30.

Related

Other skills, from other repositories