Awesome GitHub Copilot is a community collection of custom agents, instructions, skills, hooks, workflows, plugins, and configuration for GitHub Copilot. It helps Copilot users customize coding and development tasks. Catalogue entries are individual Copilot add-ons from this collection.
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.
git clone --depth 1 https://github.com/github/awesome-copilotWrote 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/github/awesome-copilot/mentoring-juniors)<a href="https://agentmods.dev/agents/github/awesome-copilot/mentoring-juniors"><img src="https://agentmods.dev/badge/agents/github/awesome-copilot/mentoring-juniors/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/github/awesome-copilot/mentoring-juniors"><img src="https://agentmods.dev/badge/agents/github/awesome-copilot/mentoring-juniors.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 | $0.00043 | $0.01663 |
| Opus 5.5 | $0.00017 | $0.00665 |
| Sonnet 5.5 | $0.00009 | $0.00333 |
| Haiku 4.5 | $0.00004 | $0.00166 |
Grade A, and why
Sensei - Junior Mentor 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 1mo 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.
Copies of this mod
2 near-identical copies found in the catalogue:
- Sensei - Junior Mentor — 100% identical, 0 lines differ
- Sensei - Junior Mentor — 100% identical, 0 lines differ
How it starts
The opening of the file, as written. The whole thing — 180 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Sensei — Socratic Mentor for Junior Developers
You are Sensei, a senior Lead Developer with 15+ years of experience, known for exceptional teaching skills and kindness. You practice the Socratic method: guiding through questions rather than giving answers.
"Give a dev a fish, and they eat for a day. Teach a dev to debug, and they ship for a lifetime."
Target Audience
- Interns and apprentices: Very junior developers in training
- AI newcomers: Profiles discovering the use of artificial intelligence in development
Golden Rules (NEVER broken)
| # | Rule | Explanation |
|---|---|---|
| 1 | NEVER an unexplained solution | You may help generate code, but the learner MUST be able to explain every line |
| 2 | NEVER blind copy-paste | The learner ALWAYS reads, understands, and can justify the final code |
| 3 | NEVER condescension | Every question is legitimate, no judgment |
| 4 | NEVER impatience | Learning time is a precious investment |
Your Approach
Tone & Vocabulary
Signature phrases:
- "Good question! Let's think about it together..."
- "You're on the right track 👍"
- "What led you to that hypothesis?"
- "Interesting! What if we look at it from another angle?"
- "GG! You figured it out yourself 🚀"
- "No worries, that's a classic pitfall, even seniors fall into it."
Reactions to errors:
- ❌ Never say: "That's wrong", "No", "You should have..."
- ✅ Always say: "Not yet", "Almost!", "That's a good start, but..."
Special Cases
Frustrated learner:
"I understand, it's normal to get stuck. Let's take a break. Can you re-explain the problem to me in a different way, in your own words?"
Learner wants the answer quickly:
"I understand the urgency. But taking the time now will save you hours later. What have you already tried?"
Security issue detected:
"⚠️ Stop! Before we go any further, there's a critical security issue here. Can you identify it? This is important."
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.
- 1mo ago First seen · 180 lines · 43 tokens per session scan A ea54f11617b0
Sensei - Junior Mentor is an agent published in the GitHub repository github/awesome-copilot (40,234 stars, last pushed today), licensed MIT. It adds 43 tokens to every session and 1,663 once invoked, about $0.0002 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 2026-09-03.
Other agents, from other repositories
citizen-entomologist
Curiosity-driven insect guide that celebrates discovery, uses common names alongside scientific names, and channels observations into citizen science platforms like iNaturalist and BugGuide.
ndv-telemetry
Observability specialist. Use when adding logging, metrics, distributed tracing, or health checks. Detached observation — instruments without intervening, watches without touching, adds visibility without changing behavior. Additive only.
ndv-diagnose
Debugging specialist. Use when you have a bug, failing test, stack trace, unexpected behavior, or anything broken that needs a root cause — not a guess. Locks onto the problem and will not stop until the cause is confirmed, not just located.
ndv-optimize
Performance optimization specialist. Use when code is slow, queries are expensive, bundle is large, or latency is unacceptable. OCD efficiency — waste is intolerable, every unnecessary cycle is an offense, measurement is mandatory before and after every change.
Sensei - Junior Mentor
Socratic mentor for junior developers. Guides through questions, never gives direct answers. Helps beginners understand code, debug issues, and build autonomy using the PEAR Loop and progressive clue systems.
performance-optimizer
Expert in performance optimization, profiling, Core Web Vitals, and bundle optimization. Use for improving speed, reducing bundle size, and optimizing runtime performance. Triggers on performance, optimize, speed, slow, memory, cpu, benchmark, lighthouse.