ab100: Skill for Claude Code

.github/skills/ab100-item-creator/SKILL.md

ab100-item-creator is a skill for Claude Code, Codex from timothywarner-org/ab100. It costs 81 tokens per session (4,610 once invoked), scanned A, original, MIT.

A skill for writing AB-100 practice questions. AB-100 is a Microsoft certification exam about AI agents, and the questions focus on products such as Copilot Studio, Microsoft Foundry, Dynamics 365, and Power Platform.

In plain words
What is it for?
Use it to generate exam-style practice items, distractors, and scenarios for AB-100 study.
Why use it?
It helps create original questions with realistic scenarios and plausible answer choices while grounding product behavior in Microsoft Learn. This avoids relying on copied exam content or uncertain product details.

Skill for Claude CodeCodex

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

This is timothywarner-org/ab100's own configuration. It tells Claude Code and Codex how to work on ab100 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 ab100 configures →

Reuse

Borrowing it

Nothing to install: this file belongs to timothywarner-org/ab100. 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/timothywarner-org/ab100/main/.github/skills/ab100-item-creator/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/timothywarner-org/ab100

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.

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README.md
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Per session 81 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,610 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 $0.00081 $0.04610
Opus 5 $0.00041 $0.02305
Sonnet 5 $0.00016 $0.00922
Haiku 4.5 $0.00008 $0.00461

Measured 10d ago against content hash ad4b747f8df2, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

ab100-item-creator 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 10d 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.

.github/skills/ab100-item-creator/SKILL.md · 357 lines

How it starts

The opening of the file, as written. The whole thing — 357 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Skill: ab100.practice_questions.exam_realistic

Description: Generate AB-100 practice questions that feel like the real exam without copying it. Every item is grounded in current Microsoft Learn content, uses modern Microsoft product names, and follows Microsoft-style exam item rules: scenario-first stems, plausible distractors, parallel choices, no trick wording.

Style precedence

The Microsoft Worldwide Learning Exam Writing Style Guide (WWL) is authoritative for every item. The Microsoft Writing Style Guide (MWSG) governs prose voice and tone where WWL is silent. When the two guides conflict, WWL wins.

Two MWSG conventions overridden by WWL for exam items:

  • No contractions anywhere in an item.
  • All uppercase for key names: TAB, ENTER, CTRL+ALT+DELETE.

Grounding

Required sources:

  • Microsoft Learn (truth source for objectives and product behavior). Access via the Microsoft Learn MCP server using microsoft_docs_search and microsoft_docs_fetch.
  • Microsoft Learn code samples (for Copilot Studio YAML, Power Platform CLI, Microsoft Foundry SDK accuracy). Access via microsoft_code_sample_search.
  • Canonical AB-100 skills outline: docs/ab100-exam-objectives.md (verbatim sync from Microsoft Learn).

AB-100 domains (canonical)

Domain Weight
Plan AI-powered business solutions 25-30%
Design AI-powered business solutions 25-30%
Deploy AI-powered business solutions 40-45%

Pull specific objectives from docs/ab100-exam-objectives.md. If that file is unavailable, query the Microsoft Learn MCP for the AB-100 study guide.

Style and word usage (WWL, mandatory)

Question sentence

  • Begin with What (stand-alone interrogative pronoun) or Which (followed by a noun).
  • The auxiliary in question sentences is should. Do not use can, must, might, do, would, or may in question sentences.
  • Approved stems: What should you do? / What should you recommend? / Which agent should you use? / Which two actions should you perform? / What are two possible ways to achieve this goal?
  • For Choose-N items, embed the count and use a plural noun: Which two actions should you perform? Each correct answer presents part of the solution.
  • Avoid negatives. If a negative is unavoidable, CAP and bold it (for example, NOT).
  • Goal statements use You need to ... or You need to ensure that ...
  • Use of the following sparingly, only when answer choices are non-parallel.
  • True/False stems are not allowed.

Read the full file on GitHub · 357 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. 10d ago First seen · 357 lines · 81 tokens per session scan A ad4b747f8df2

Subscribe to this mod's changes

ab100-item-creator is a skill published in the GitHub repository timothywarner-org/ab100 (37 stars, last pushed 2mo ago), licensed MIT. It adds 81 tokens to every session and 4,610 once invoked, about $0.0004 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.