What is az104-cert-buddy copilot-instructions.md?

Repository instructions for an AZ-104 study project, where AZ-104 is Microsoft's certification exam for administering Azure cloud services.

They guide changes to Azure practice-question, study-planning, and lab agents while keeping names, Microsoft writing guidance, objectives, and tool configuration consistent.

They explain where the project keeps agent definitions, study skills, prompts, documentation, and connections to external tools.

How timothywarner-org/az104-cert-buddy configures GitHub Copilot

Reuse

Borrowing it

Nothing to install: this file belongs to timothywarner-org/az104-cert-buddy. 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/az104-cert-buddy/main/.github/copilot-instructions.md

Clone the repo

git clone --depth 1 https://github.com/timothywarner-org/az104-cert-buddy

Made for: GitHub Copilot.

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/timothywarner-org/az104-cert-buddy/copilot-instructions/github.svg)](https://agentmods.dev/instructions/timothywarner-org/az104-cert-buddy/copilot-instructions)

Your own site

<a href="https://agentmods.dev/instructions/timothywarner-org/az104-cert-buddy/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/timothywarner-org/az104-cert-buddy/copilot-instructions/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/timothywarner-org/az104-cert-buddy/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/timothywarner-org/az104-cert-buddy/copilot-instructions.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,097 This file is loaded in full into every session.

When invoked 1,097 The same file — it is already loaded in full.

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.

Model	Per session	Once invoked
Fable 5.1	$0.01097	$0.01097
Opus 5.5	$0.00439	$0.00439
Sonnet 5.5	$0.00219	$0.00219
Haiku 4.5	$0.00110	$0.00110

Measured 2mo ago against content hash 6a6ccd4fd9e3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

az104-cert-buddy copilot-instructions.md 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 2mo 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/copilot-instructions.md · 90 lines

How it starts

The opening of the file, as written. The whole thing — 90 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Copilot instructions

Repository purpose

This repo defines GitHub Copilot agent behavior and AZ-104 skills. There is no app code; the primary artifacts are agent definitions and skill specs.

Key locations

Agent definition: .github/agents/az104-cert-buddy-agent.agent.md
Skills: .github/skills/*/SKILL.md
Prompts: .github/prompts/az104-practice-questions.prompt.md, .github/prompts/az104-practice-lab.prompt.md, .github/prompts/az104-study-planner.prompt.md
MCP servers (workspace only): .vscode/mcp.json
Microsoft Writing Style Guide: references/style-guide.md
Fictional companies: references/fictional-companies.md
AZ-104 objectives: references/az104-objectives.md

Skill and agent conventions

Each skill file is a single YAML frontmatter block followed by Markdown.
The skill name used by agents must match the YAML frontmatter name in the skill file, not the folder name.
Skills are auto-discovered from .github/skills/ folders. The agent references them by name in its Markdown body; there is no skills: field in agent YAML frontmatter.
Agent files use YAML frontmatter with tools lists. Keep tool IDs scoped to MCP servers defined in .vscode/mcp.json.
Prompt files (in .github/prompts/) reference agents by the name field in the agent's YAML frontmatter via the agent: key. The current value is az104-cert-buddy-agent. If the agent is renamed, update all prompt files that reference it.
Current skills:
- az104-item-creator (exam item generation)
- az104-lab-creator (lab generation)
- az104-study-planner (personalized study plan generation)

MCP server IDs

az104buddy-mslearn -- Microsoft Learn MCP (free, no API key; provides microsoft_docs_search, microsoft_docs_fetch, microsoft_code_sample_search)

How users set up the MCP server

The Microsoft Learn MCP server requires no API keys, logins, or sign-ups. It is configured in .vscode/mcp.json as an HTTP server pointing to https://learn.microsoft.com/api/mcp. Users can also search for "@mcp learn" in the VS Code Extensions marketplace for one-click install.

Read the full file on GitHub · 90 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.

2mo ago First seen · 90 lines · 1,097 tokens per session scan A 6a6ccd4fd9e3

Subscribe to this mod's changes

az104-cert-buddy copilot-instructions.md is an instructions file published in the GitHub repository timothywarner-org/az104-cert-buddy (28 stars, last pushed 7mo ago), licensed MIT. It adds 1,097 tokens to every session, about $0.0044 per session on Opus 5.5. 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.

Cloud DevOps and cloud Learning and teaching ai-education az-104 azure azure-administrator certification copilot

az104-cert-buddy copilot-instructions.md next to 6 instructions from other repositories
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az104-cert-buddy: Instructions file for GitHub Copilot