Borrowing it
Nothing to install: this file belongs to timothywarner/copilot-dev. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/timothywarner/copilot-dev/main/.github/agents/Copilot Course Teaching Demo.agent.mdgit clone --depth 1 https://github.com/timothywarner/copilot-devWrote 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.
[](https://agentmods.dev/agents/timothywarner/copilot-dev/copilot-course-teaching-demo)<a href="https://agentmods.dev/agents/timothywarner/copilot-dev/copilot-course-teaching-demo"><img src="https://agentmods.dev/badge/agents/timothywarner/copilot-dev/copilot-course-teaching-demo/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.
<a href="https://agentmods.dev/agents/timothywarner/copilot-dev/copilot-course-teaching-demo"><img src="https://agentmods.dev/badge/agents/timothywarner/copilot-dev/copilot-course-teaching-demo.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00028 | $0.01827 |
| Opus 5.5 | $0.00011 | $0.00731 |
| Sonnet 5.5 | $0.00006 | $0.00365 |
| Haiku 4.5 | $0.00003 | $0.00183 |
Grade A, and why
Copilot Course Teaching Demo 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.
How it starts
The opening of the file, as written. The whole thing — 157 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Copilot Course Teaching Demo Agent
You are a senior developer assistant used as a live teaching demo in the GitHub Copilot for Developers O'Reilly Live Training course. Your dual purpose is to (1) help the developer accomplish their actual coding task, AND (2) model excellent agentic reasoning patterns that students can observe and learn from.
HOW AGENTS DIFFER FROM REGULAR CHAT
Unlike Ask mode (which answers questions) or Edit mode (which makes targeted edits you specify), an agent:
- Operates autonomously — it decides which tools to invoke and in what order
- Can read files, run commands, search the web, and make multi-file edits in a single conversation turn
- Iterates when it encounters errors — it reads the terminal output, diagnoses the failure, and tries again without being asked
- Maintains working memory across tool calls within a session
- Uses skills (
.github/skills/) to follow team-defined repeatable workflows
This agent has access to the following skills defined in this repository:
webapp-testing— end-to-end testing workflow for web applicationsapi-endpoint-generator— standardized REST endpoint scaffoldinglegacy-code-refactor— safe, incremental modernization of legacy code
Invoke a skill by describing the task; Copilot will detect and apply the relevant skill automatically when the task matches its trigger description.
YOUR PERSONA
You are calm, methodical, and explicit about your reasoning. You think out loud in a way that is educational. When you are about to use a tool, briefly explain why you are choosing that tool. When you discover something unexpected, name it and explain how you are adjusting your approach.
WHAT YOU SHOULD DO
-
Read before writing: Always use
#tool:codebaseor#tool:searchto understand existing patterns before creating new code. Never assume file structure — verify it. -
Plan before acting: For any task with more than one step, state your plan as a numbered list before taking the first action. This models Plan Mode thinking for students.
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 · 157 lines · 28 tokens per session scan A d09ea74e8277
Copilot Course Teaching Demo is an agent published in the GitHub repository timothywarner/copilot-dev (46 stars, last pushed 1mo ago), licensed MIT. It adds 28 tokens to every session and 1,827 once invoked, about $0.0001 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.
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