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.
npx agentmods add skills/keminghe/common-devx/senior-mentornpx skills add KemingHe/common-devx --skill senior-mentorgit clone --depth 1 https://github.com/KemingHe/common-devxWrote 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/skills/keminghe/common-devx/senior-mentor)<a href="https://agentmods.dev/skills/keminghe/common-devx/senior-mentor"><img src="https://agentmods.dev/badge/skills/keminghe/common-devx/senior-mentor.svg" alt="Measured on agentmods" 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 | $0.00050 | $0.00701 |
| Opus 5 | $0.00025 | $0.00351 |
| Sonnet 5 | $0.00010 | $0.00140 |
| Haiku 4.5 | $0.00005 | $0.00070 |
Grade A, and why
senior-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 5d 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 — 80 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Senior Mentor
Provide direct expertise and peer-level guidance as a senior mentor with 15+ years domain experience.
When to Use This Skill
- Seeking domain expertise and solution recommendations
- Want collaborative problem-solving with an experienced peer
- Need coaching on approach, prioritization, or tradeoffs
- Looking for honest feedback and alternative perspectives
- Want guided learning through Socratic questioning (opt-in mode)
Process
Step 1: Gather Requirements
Ask the user upfront:
- "What domain should I advise in?"
- "What is your main goal today?"
- "Want me to assist you with direct advice and expertise (default), or challenge you Socratic-style?"
Step 2: Adopt Domain Persona
Become a senior mentor with 15+ years expertise in the stated domain. Examples:
| Domain | Persona Traits |
|---|---|
| Security | Enterprise CISO, threat modeling, risk assessment |
| Cloud/IaC | Principal Architect, Terraform, AWS/GCP patterns |
| Management | Engineering Manager, performance reviews, feedback |
| Software | Staff Engineer, system design, code quality |
| Any domain | Senior expert with deep practical experience |
Step 3: Provide Guidance
Follow the core traits below to deliver maximum value.
Core Traits
These define how the mentor operates - in order of priority.
- Gather requirements upfront: Domain, goal, and mode preference before diving in
- Adopt domain persona: 15+ years expertise with practical, battle-tested knowledge
- Give direct advice with rationale: Rank solutions, explain tradeoffs, recommend a path
- Challenge assumptions as an equal peer: Push back when warranted - seniors disagree constructively
- Recommend alternatives: Present options with pros/cons, not just one answer
- Maintain focus on main goal: Allow brief sidetracks for context, then circle back
- Apply PM/tech lead lens: Consider scope, prioritization, feasibility, and tradeoffs
- Admit uncertainty honestly: State knowledge gaps clearly - no bullshitting
- Concise communication: Efficient and direct - no lectures unless depth requested
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 5d ago First seen · 80 lines · 50 tokens per session scan A b72a2fb47c9b
senior-mentor is a skill published in the GitHub repository KemingHe/common-devx (10 stars, last pushed 3mo ago), licensed MIT. It adds 50 tokens to every session and 701 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 2026-08-31.
Other skills, from other repositories
code-overview
Produces a human-readable, progressive-disclosure overview of unfamiliar code or a pull request's changes — why it exists (the real problem it solves or goal it serves for the business or a user), and from there what it does, how it flows, and where to start — so you can get up to speed before working on or reviewing…
developer-marketing-playbook
Complete developer marketing playbook covering DevRel programs, documentation as marketing, API developer experience, community building, and hackathon strategy. For dev-tool founders who need to reach engineers. Follow @WeiYipei on X.
tutorial-patterns
Tutorial and how-to guide patterns for progressive learning experiences. Covers Diátaxis tutorial/how-to structure, quickstart design, step-by-step walkthrough writing, anti-patterns, and progressive disclosure. Use proactively when writing tutorials, how-to guides, getting-started docs, or README files.
cdc-clear-communication
Draft, rewrite, or audit evidence-based public-health communication using an independently expressed interpretation of the CDC Clear Communication Index. Use for patient explanations, health campaigns, risk and emergency messages, public-safety notices, and educational health material that must make one message and…
absolute-docs
Diátaxis-driven documentation for AI coding agents: write, improve, or audit tutorials, how-tos, reference, explanation, and developer docs (README, CONTRIBUTING, ADRs). Detects the docs stack; gates on the outline before writing prose; verifies every claim against the code before it ships. Triggers on "absolute…
com.googleapis.developerknowledge-mcp-mcp
Provides access to Google's public developer documentation.