One-Pager Designer

One-Pager Designer is a skill for Claude Code, Codex from SkillMedev/document-studio. It costs 123 tokens per session (1,382 once invoked), scanned A, original, MIT.

A writing guide for a one-page decision document. It compresses the problem, evidence, impact, and specific request into a standalone page that can be read and forwarded on its own.

In plain words
What is it for?
Use it when preparing a leadership brief or decision request that must state the audience, strongest evidence, expected impact, and exact ask within one page.
Why use it?
It prevents a brief from merely sharing information without making clear what decision or action the reader should approve.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

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.

agentmods
npx agentmods add skills/skillmedev/document-studio/one-pager-designer
Any agent
npx skills add SkillMedev/document-studio --skill one-pager-designer
Clone the repo
git clone --depth 1 https://github.com/SkillMedev/document-studio

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 One-Pager Designer

README.md
[![agentmods](https://agentmods.dev/badge/skills/skillmedev/document-studio/one-pager-designer.svg)](https://agentmods.dev/skills/skillmedev/document-studio/one-pager-designer)
Your own site
<a href="https://agentmods.dev/skills/skillmedev/document-studio/one-pager-designer"><img src="https://agentmods.dev/badge/skills/skillmedev/document-studio/one-pager-designer.svg" alt="Measured on agentmods" height="20"></a>
Per session 123 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,382 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00123 $0.01382
Opus 5 $0.00062 $0.00691
Sonnet 5 $0.00025 $0.00276
Haiku 4.5 $0.00012 $0.00138

Measured 5d ago against content hash b18f93df7119, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

One-Pager Designer 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.

skills/one-pager-designer/SKILL.md · 86 lines

How it starts

The opening of the file, as written. The whole thing — 86 lines — stays where its author put it; the contents beside it link to each section on GitHub.

One-Pager Designer

A one-pager is a commitment device: confining the argument to one page forces the author to know what matters and discard what does not. It is not a short document; it is a complete argument at compression. The costly failure it prevents is the vague ask - a page that makes the reader feel informed but gives them nothing to say yes or no to, which means the meeting happens anyway and the page changed nothing.

A one-pager is not an executive summary. An executive summary condenses a longer document; a one-pager is the whole argument - it stands alone, requires no parent document, and is designed to be forwarded, printed, or shared independently.

Inputs to collect

  1. The exact decision or action sought - if the requester cannot state it in one sentence, extract it before writing anything else; the ask determines everything upstream of it.
  2. The reader - who decides, what they already know, what they care about. Default to "knows the domain, not the details."
  3. The strongest fact or number grounding the problem. If none exists, say so and label any estimate as an estimate.
  4. Three to five pieces of evidence - facts or precedents, not assertions.
  5. The deadline or decision window, if any.

Operating procedure

Write in this order - ask first, header last - even though the page presents in the reverse. The ask is the load-bearing element; everything else exists to earn it.

  1. Write the ask first. It must be specific (name the exact decision, resource, or approval), actionable (something the reader can say yes or no to right now), and time-bounded (a deadline or decision window when relevant). "Approve $80K and 1 backend engineer for Q3; decision needed by June 14 to hit the July window" is an ask. "Support this initiative" is a request to feel good about something.
  2. State the problem or opportunity in two to four sentences, grounded in a specific fact or number - what is broken or what is at stake.
  3. State the recommendation in two to four sentences - concrete, not aspirational.
  4. List the evidence: three to five bullets, each one fact or precedent, not assertion. One idea per bullet, no nesting.
  5. Quantify the impact - what success looks like, in numbers where possible. "Reduces processing time by 40%" beats "significantly faster."
  6. Write the header last: title, author, date, and a single-sentence purpose statement.
  7. Run the density pass. Read every line and ask: does removing this change anything? If not, cut it. Delete introductory sentences that restate the title ("This one-pager addresses..."). Delete hedges unless the hedge changes the ask ("This assumes budget approval" stays; "this may or may not work" goes).

Read the full file on GitHub · 86 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 · 86 lines · 123 tokens per session scan A b18f93df7119

Subscribe to this mod's changes

One-Pager Designer is a skill published in the GitHub repository SkillMedev/document-studio (1 stars, last pushed 2mo ago), licensed MIT. It adds 123 tokens to every session and 1,382 once invoked, about $0.0006 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 2026-08-31.

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