oppertunity-party: Skill for Claude Code

.agents/skills/doc-coauthoring/SKILL.md

doc-coauthoring is a skill for Claude Code, Codex from mcwalrus/oppertunity-party. It costs 77 tokens per session (3,254 once invoked), scanned A, a copy of doc-coauthoring, MIT.

A structured process for writing documentation, proposals, technical specifications, and decision records together with a user. It covers gathering context, shaping the document, and checking whether it makes sense to a fresh reader.

In plain words
What is it for?
Use it to draft or improve a PRD, design document, decision document, RFC, proposal, or other substantial piece of documentation.
Why use it?
It helps prevent missing context, unclear structure, and explanations that make sense to the author but not to other readers.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions subagents; mentions Claude Code; installed under .agents/ (shared by several agents).

This is mcwalrus/oppertunity-party's own configuration. It tells Claude Code and Codex how to work on oppertunity-party 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 oppertunity-party configures →

Reuse

Borrowing it

Nothing to install: this file belongs to mcwalrus/oppertunity-party. 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/mcwalrus/oppertunity-party/main/.agents/skills/doc-coauthoring/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/mcwalrus/oppertunity-party

Made for: Claude Code, Codex.

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 doc-coauthoring

README.md
[![agentmods](https://agentmods.dev/badge/skills/mcwalrus/oppertunity-party/doc-coauthoring.svg)](https://agentmods.dev/skills/mcwalrus/oppertunity-party/doc-coauthoring)
Your own site
<a href="https://agentmods.dev/skills/mcwalrus/oppertunity-party/doc-coauthoring"><img src="https://agentmods.dev/badge/skills/mcwalrus/oppertunity-party/doc-coauthoring.svg" alt="Measured on agentmods" height="20"></a>
Per session 77 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,254 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod 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 $0.00077 $0.03254
Opus 5 $0.00039 $0.01627
Sonnet 5 $0.00015 $0.00651
Haiku 4.5 $0.00008 $0.00325

Measured 5d ago against content hash 2e47d78846fa, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

doc-coauthoring 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 5d 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.

Origin

This is a copy

100% identical to doc-coauthoring — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.agents/skills/doc-coauthoring/SKILL.md · 376 lines

How it starts

The opening of the file, as written. The whole thing — 376 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Doc Co-Authoring Workflow

This skill provides a structured workflow for guiding users through collaborative document creation. Act as an active guide, walking users through three stages: Context Gathering, Refinement & Structure, and Reader Testing.

When to Offer This Workflow

Trigger conditions:

  • User mentions writing documentation: "write a doc", "draft a proposal", "create a spec", "write up"
  • User mentions specific doc types: "PRD", "design doc", "decision doc", "RFC"
  • User seems to be starting a substantial writing task

Initial offer: Offer the user a structured workflow for co-authoring the document. Explain the three stages:

  1. Context Gathering: User provides all relevant context while Claude asks clarifying questions
  2. Refinement & Structure: Iteratively build each section through brainstorming and editing
  3. Reader Testing: Test the doc with a fresh Claude (no context) to catch blind spots before others read it

Explain that this approach helps ensure the doc works well when others read it (including when they paste it into Claude). Ask if they want to try this workflow or prefer to work freeform.

If user declines, work freeform. If user accepts, proceed to Stage 1.

Stage 1: Context Gathering

Goal: Close the gap between what the user knows and what Claude knows, enabling smart guidance later.

Initial Questions

Start by asking the user for meta-context about the document:

  1. What type of document is this? (e.g., technical spec, decision doc, proposal)
  2. Who's the primary audience?
  3. What's the desired impact when someone reads this?
  4. Is there a template or specific format to follow?
  5. Any other constraints or context to know?

Inform them they can answer in shorthand or dump information however works best for them.

If user provides a template or mentions a doc type:

  • Ask if they have a template document to share
  • If they provide a link to a shared document, use the appropriate integration to fetch it
  • If they provide a file, read it

Read the full file on GitHub · 376 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. 5d ago First seen · 376 lines · 77 tokens per session scan A 2e47d78846fa

Subscribe to this mod's changes

doc-coauthoring is a skill published in the GitHub repository mcwalrus/oppertunity-party (0 stars, last pushed 13d ago), licensed MIT. It adds 77 tokens to every session and 3,254 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to doc-coauthoring, differing in 0 lines, and is treated as a copy.