size-cards

size-cards is a skill for Claude Code, Codex from aenix-io/aeman. It costs 63 tokens per session (1,366 once invoked), scanned A, original, Apache-2.0.

A planning-board skill that sizes work cards as S, M, L, or XL using a fixed rubric. The sizes become points used to compare planned work with a person's weekly capacity.

In plain words
What is it for?
Use it to review a team's or person's cards, show the proposed sizes to a lead, and write confirmed sizes back to the board.
Why use it?
It reduces inconsistent estimates and corrects cards that would otherwise all use the board's default middle size.

Skill for Claude CodeCodex

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

Good fit Use it to review a team's or person's cards, show the proposed sizes to a lead, and write confirmed sizes back to the board.

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Install with agentmods
npx agentmods add skills/aenix-io/aeman/size-cards
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 aenix-io/aeman --skill size-cards
Clone the repo
git clone --depth 1 https://github.com/aenix-io/aeman

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 size-cards

README.md
[![agentmods](https://agentmods.dev/badge/skills/aenix-io/aeman/size-cards/github.svg)](https://agentmods.dev/skills/aenix-io/aeman/size-cards)
Your own site
<a href="https://agentmods.dev/skills/aenix-io/aeman/size-cards"><img src="https://agentmods.dev/badge/skills/aenix-io/aeman/size-cards/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 size-cards

Your own site · 80×15
<a href="https://agentmods.dev/skills/aenix-io/aeman/size-cards"><img src="https://agentmods.dev/badge/skills/aenix-io/aeman/size-cards.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 63 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,366 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 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 $0.00063 $0.01366
Opus 5 $0.00032 $0.00683
Sonnet 5 $0.00013 $0.00273
Haiku 4.5 $0.00006 $0.00137

Measured yesterday against content hash 7ad7a74b93b6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

size-cards 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 yesterday.

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/size-cards/SKILL.md · 50 lines

How it starts

The opening of the file, as written. The whole thing — 50 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Size cards

You size planning-board cards for a team lead: read each card, decide what it weighs by the rubric below, show the lead the table, and write the sizes back with update_card. The board sums sizes as points (S=1, M=2, L=4, XL=8) against each person's weekly capacity, so consistency matters more than precision: the same shape of card must always get the same size.

Sizing happens AFTER the fact, in a pass like this one — not card by card as work is planned. A card nobody has sized is not invisible meanwhile: the board weighs it as M, the middle of its own record. So the value of a pass is in the cards that are NOT M — the ones that would otherwise be under- or over-counted — and a card you would call M is a card the board already has right.

This is judgement work, card by card. Never derive a size from the length of the description, the team, or the kind of card by a rule; never write code that assigns sizes. Read the card and decide.

Procedure

  1. Find the cards. Use the aeman MCP list_cards:
    • a team: list_cards view=team team=<key> — read the keys from get_board (metadata.teams; "" is the no-team group);
    • a person: list_cards view=me user=<login>;
    • a week on the Triage board: list_cards view=triage team=<key>, then keep the cards whose status.triageWeek is the Monday asked for;
    • the whole backlog of a team: list_cards view=backlog team=<key>. Keep the cards with no spec.size, unless the lead asked to re-size everything. Skip review cards (spec.reviewOf set) — a review is S by definition and the board already weighs an unsized one as S, so a pass over them changes nothing — and skip process turns (spec.task set) unless asked: a turn is planned work of its process and is normally S or M.
  2. Read what you need. The listing is the board's row shape: title, team, zone, assignees, kind. When a title alone does not say what the work is, call get_card for the description — but do not open every card: a one-line card with no description is almost always S, and the rubric says so.
  3. Size every card by the rubric. Write one line per card for the lead: uid — title — size — why, where why names the concrete deliverable in the card's own words (at most twelve words). Cards you are unsure about, mark with ? and say what would decide it.
  4. Show the table and STOP. Do not write anything until the lead has read it and said which sizes stand. They may change some; their word wins.
  5. Write the sizes the lead confirmed: update_card uid=<uid> size=<S|M|L|XL>, one call per card. Report how many were written and the points total per person.

Read the full file on GitHub · 50 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. yesterday First seen · 50 lines · 63 tokens per session scan A 7ad7a74b93b6

Subscribe to this mod's changes

size-cards is a skill published in the GitHub repository aenix-io/aeman (31 stars, last pushed today), licensed Apache-2.0. It adds 63 tokens to every session and 1,366 once invoked, about $0.0003 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 2026-09-09.

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