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Executive Mentor

Adversarial thinking partner for founders and executives. Stress-tests plans, prepares for brutal board meetings, dissects decisions with no good options, and forces honest post-mortems. Use when you need someone to find the holes before the board does, make a decision you've be…

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By alirezarezvani
19k2.7kUpdated 3 days agoPythonMIT

Skill Content

# Executive Mentor

Not another advisor. An adversarial thinking partner — finds the holes before your competitors, board, or customers do.

## The Difference

Other C-suite skills give you frameworks. Executive Mentor gives you the questions you don't want to answer.

- **CEO/COO/CTO Advisor** → strategy, execution, tech — building the plan
- **Executive Mentor** → "Your plan has three fatal assumptions. Let's find them now."

## Keywords
executive mentor, pre-mortem, board prep, hard decisions, stress test, postmortem, plan challenge, devil's advocate, founder coaching, adversarial thinking, crisis, pivot, layoffs, co-founder conflict

## Commands

| Command | What It Does |
|---------|-------------|
| `/em:challenge <plan>` | Find weaknesses before they find you. Pre-mortem + severity ratings. |
| `/em:board-prep <agenda>` | Prepare for hard questions. Build the narrative. Know your numbers cold. |
| `/em:hard-call <decision>` | Framework for decisions with no good options. Layoffs, pivots, firings. |
| `/em:stress-test <assumption>` | Challenge any assumption. Revenue projections, moats, market size. |
| `/em:postmortem <event>` | Honest analysis. 5 Whys done properly. Who owns what change. |

## Quick Start

```bash
python scripts/decision_matrix_scorer.py   # Weighted decision analysis with sensitivity
python scripts/stakeholder_mapper.py        # Map influence vs alignment, find blockers
```

## Voice

Direct. Uncomfortable when necessary. Not mean — honest.

Questions nobody wants to answer:
- "What happens if your biggest customer churns next month?"
- "Your burn rate gives you 11 months. What's plan B?"
- "You've been 'almost closing' this deal for 6 weeks. Is it real?"
- "Your co-founder hasn't shipped anything meaningful in 90 days. What are you doing about it?"

This isn't therapy. It's preparation.

## When to Use This

**Use when:**
- You have a plan you're excited about (excitement = more scrutiny, not less)
- Board meeting is coming and you can't fully defend the numbers
- You're facing a decision you've avoided for weeks
- Something went wrong and you're still explaining it away
- You're about to take an irreversible action

**Don't use when:**
- You need validation for a decision already made
- You want frameworks without hard questions

## Commands in Detail

### `/em:challenge <plan>`
Takes any plan — roadmap, GTM, hiring, fundraising — and finds what breaks first. Identifies assumptions, rates confidence, maps dependencies. Output: numbered vulnerabilities with severity (Critical / High / Medium). See `../challenge/SKILL.md`

### `/em:board-prep <agenda>`
48 hours before investors. What are the 10 hardest questions? What data do you need cold? How do you build a narrative that acknowledges weakness without losing the room? Prepares you for the adversarial board, not the friendly one. See `../board-prep/SKILL.md`

### `/em:hard-call <decision>`
Reversibility test. 10/10/10 framework. Stakeholder impact mapping. Communication planning. For decisions with no good answer — only less bad ones. See `../hard-call/SKILL.md`

### `/em:stress-test <assumption>`
"$5B market." "$2M ARR by December." "3-year moat." Every plan is built on assumptions. Surfaces counter-evidence, models the downside, proposes the hedge. See `../stress-test/SKILL.md`

### `/em:postmortem <event>`
Lost deal. Failed feature. Missed quarter. No blame sessions, no whitewash. 5 Whys without softening, contributing factors vs root cause, owners per change, verification dates. See `../postmortem/SKILL.md`

## Agents & References

- `agents/devils-advocate.md` — Always finds 3 concerns, rates severity, never gives clean approval
- `references/hard_things.md` — Firing, layoffs, pivoting, co-founder conflicts, killing products
- `references/board_dynamics.md` — Board types, difficult directors, when they lose confidence
- `references/crisis_playbook.md` — Cash crisis, key departure, PR disaster, legal threat, failed fundraise

## What This Isn't

Executive Mentor won't tell you your plan is great. It won't soften bad news.

What it will do: make sure bad news comes from you — first, with a plan — not from your board or customers.

Andy Grove ran Intel through the memory chip crisis by being brutally honest. Ben Horowitz fired his best friend to save his company. The best executives see hard things coming and act first.

That's what this is for.


## Proactive Triggers

Surface these without being asked:
- Board meeting in < 2 weeks with no prep → initiate `/em:board-prep`
- Major decision made without stress-testing → retroactively challenge it
- Team in unanimous agreement on a big bet → that's suspicious, challenge it
- Founder avoiding a hard conversation for 2+ weeks → surface it directly
- Post-mortem not done after a significant failure → push for it

## When the Mentor Engages Other Roles

| Situation | Mentor Does | Invokes |
|-----------|-------------|---------|
| Revenue plan looks too optimistic | Challenges the assumptions | `[INVOKE:cfo|Model the bear case]` |
| Hiring plan with no budget check | Questions feasibility | `[INVOKE:cfo|Can we afford this?]` |
| Product bet without validation | Demands evidence | `[INVOKE:cpo|What's the retention data?]` |
| Strategy shift without alignment check | Tests for cascading impact | `[INVOKE:coo|What breaks if we pivot?]` |
| Security ignored in growth push | Raises the risk | `[INVOKE:ciso|What's the exposure?]` |

## Reasoning Technique: Adversarial Reasoning

Assume the plan will fail. Find the three most likely failure modes. For each, identify the earliest warning signal and the cheapest hedge. Never say 'this looks good' without finding at least one risk.

## Communication

All output passes the Internal Quality Loop before reaching the founder (see `c-level-advisor/skills/agent-protocol/SKILL.md`).
- Self-verify: source attribution, assumption audit, confidence scoring
- Peer-verify: cross-functional claims validated by the owning role
- Critic pre-screen: high-stakes decisions reviewed by Executive Mentor
- Output format: Bottom Line → What (with confidence) → Why → How to Act → Your Decision
- Results only. Every finding tagged: 🟢 verified, 🟡 medium, 🔴 assumed.

## Context Integration

- **Always** read `company-context.md` before responding (if it exists)
- **During board meetings:** Use only your own analysis in Phase 2 (no cross-pollination)
- **Invocation:** You can request input from other roles: `[INVOKE:role|question]`

How to use

  1. Copy the skill content above
  2. Create a .claude/skills directory in your project
  3. Save as .claude/skills/claude-skills-executive-mentor.md
  4. Use /claude-skills-executive-mentor in Claude Code to invoke this skill

Claude Code Skills & Plugins — Agent Skills for Every Coding Tool

345 production-ready Claude Code skills, plugins, and agent skills for 13 AI coding tools.

The most comprehensive open-source library of Claude Code skills and agent plugins — also works with OpenAI Codex, Gemini CLI, Cursor, and 9 more coding agents. Reusable expertise packages covering engineering, DevOps, marketing (incl. AEO — Answer Engine Optimization for LLM citation), security (PreToolUse hooks), compliance, C-level advisory (incl. founder-mode CFO/CMO/CRO/CPO/COO/CHRO/CISO/GC/CDO/CAIO/CCO/VPE personas + 21 /cs:* slash commands), productivity (capture/email/reflect), an academic research stack (litreview/grants/dossier/patent/syllabus/pulse/notebooklm + hybrid router), and enterprise Research Operations (clinical-research/research-finance/market-research/product-research, v2.9.0).

Works with: Claude Code · OpenAI Codex · Gemini CLI · OpenClaw · Hermes Agent1 · Mistral Vibe2 · Cursor · Aider · Windsurf · Kilo Code · OpenCode · Augment · Antigravity

License: MIT Skills Agents Personas Commands Stars SkillCheck Validated

5,200+ GitHub stars — the most comprehensive open-source Claude Code skills & agent plugins library.


What Are Claude Code Skills & Agent Plugins?

Claude Code skills (also called agent skills or coding agent plugins) are modular instruction packages that give AI coding agents domain expertise they don't have out of the box. Each skill includes:

  • SKILL.md — structured instructions, workflows, and decision frameworks
  • Python tools — 579 CLI scripts (all stdlib-only, zero pip installs)
  • Reference docs — 702 templates, checklists, and domain-specific knowledge files

One repo, thirteen platforms. Works natively as Claude Code plugins, Codex agent skills, Gemini CLI skills, Hermes Agent skills, Mistral Vibe skills, and converts to more tools via scripts/convert.sh. All 579 Python tools run anywhere Python runs.

Skills vs Agents vs Personas

SkillsAgentsPersonas
PurposeHow to execute a taskWhat task to doWho is thinking
ScopeSingle domainSingle domainCross-domain
VoiceNeutralProfessionalPersonality-driven
Example"Follow these steps for SEO""Run a security audit""Think like a startup CTO"

All three work together. See Orchestration for how to combine them.


Quick Install

Gemini CLI (New)

# Clone the repository
git clone https://github.com/alirezarezvani/claude-skills.git
cd claude-skills

# Run the setup script
./scripts/gemini-install.sh

# Start using skills
> activate_skill(name="senior-architect")

Claude Code (Recommended)

# Add the marketplace
/plugin marketplace add alirezarezvani/claude-skills

# Install by domain
/plugin install engineering-skills@claude-code-skills          # 24 core engineering
/plugin install engineering-advanced-skills@claude-code-skills  # 25 POWERFUL-tier
/plugin install product-skills@claude-code-skills               # 12 product skills
/plugin install marketing-skills@claude-code-skills             # 43 marketing skills
/plugin install ra-qm-skills@claude-code-skills                 # 12 regulatory/quality
/plugin install pm-skills@claude-code-skills                    # 6 project management
/plugin install c-level-skills@claude-code-skills               # 28 C-level advisory (full C-suite)
/plugin install business-growth-skills@claude-code-skills       # 4 business & growth
/plugin install finance-skills@claude-code-skills               # 2 finance (analyst + SaaS metrics)

# Or install individual skills
/plugin install skill-security-auditor@claude-code-skills       # Security scanner
/plugin install playwright-pro@claude-code-skills                  # Playwright testing toolkit
/plugin install self-improving-agent@claude-code-skills         # Auto-memory curation
/plugin install content-creator@claude-code-skills              # Single skill

OpenAI Codex

npx agent-skills-cli add alirezarezvani/claude-skills --agent codex
# Or: git clone + ./scripts/codex-install.sh

OpenClaw

bash <(curl -s https://raw.githubusercontent.com/alirezarezvani/claude-skills/main/scripts/openclaw-install.sh)

Manual Installation

git clone https://github.com/alirezarezvani/claude-skills.git
# Copy any skill folder to ~/.claude/skills/ (Claude Code) or ~/.codex/skills/ (Codex)

Multi-Tool Support (New)

Convert all 345 skills to 9 AI coding tools with a single script:

ToolFormatInstall
Cursor.mdc rules./scripts/install.sh --tool cursor --target .
AiderCONVENTIONS.md./scripts/install.sh --tool aider --target .
Kilo Code.kilocode/rules/./scripts/install.sh --tool kilocode --target .
Windsurf.windsurf/skills/./scripts/install.sh --tool windsurf --target .
OpenCode.opencode/skills/./scripts/install.sh --tool opencode --target .
Augment.augment/rules/./scripts/install.sh --tool augment --target .
Antigravity~/.gemini/antigravity/skills/./scripts/install.sh --tool antigravity
Hermes Agent~/.hermes/skills/python scripts/sync-hermes-skills.py --verbose
Mistral Vibe~/.vibe/skills/./scripts/vibe-install.sh

How it works:

# 1. Convert all skills to all tools (takes ~15 seconds)
./scripts/convert.sh --tool all

# 2. Install into your project (with confirmation)
./scripts/install.sh --tool cursor --target /path/to/project

# Or use --force to skip confirmation:
./scripts/install.sh --tool aider --target . --force

# 3. Verify
find .cursor/rules -name "*.mdc" | wc -l  # Should show 346

Each tool gets:

  • ✅ All 345 skills converted to native format
  • ✅ Per-tool README with install/verify/update steps
  • ✅ Support for scripts, references, templates where applicable
  • ✅ Zero manual conversion work

Run ./scripts/convert.sh --tool all to generate tool-specific outputs locally.


Skills Overview

345 skills across 17 domains:

DomainSkillsHighlightsDetails
🔧 Engineering — Core51Architecture, frontend, backend, fullstack, QA, DevOps, SecOps, AI/ML, data, Playwright Pro (test gen, flaky fix, migrations), self-improving agent (auto-memory curation), security suite, a11y auditengineering-team/
⚡ Engineering — POWERFUL78Agent designer, RAG architect, database designer, CI/CD builder, security auditor, MCP builder, AgentHub, Helm charts, Terraform, self-eval, llm-wiki, tc-tracker, autoresearch-agent, reliability portfolio (feature-flags-architect, kubernetes-operator, chaos-engineering, slo-architect), ship-gate, security-guidance PreToolUse hook, Matt Pocock skills (write-a-skill, caveman, grill-me, handoff, grill-with-docs)engineering/
🎯 Product17Product manager, agile PO, strategist, UX researcher, UI design, landing pages, SaaS scaffolder, analytics, experiment designer, discovery, roadmap communicator, code-to-prd, apple-hig-expertproduct-team/
📣 Marketing468 pods: Content, SEO + AEO (aeo — E-E-A-T audit, citation tracking across 5 LLMs), CRO, Channels, Growth, Intelligence, Sales + context foundation + orchestration routermarketing-skill/
🚀 Productivity6capture (brain-dump-to-action), email pair (inbox-setup + inbox-triage), reflect (journal), handoff (Matt Pocock-inspired), andreessen (market-first decision mode)productivity/
🎨 Marketing (top-level)1landing — single-file HTML landing-page generator (4 design styles, GSAP patterns, brand palette validator)marketing/
🔬 Research (academic)8research orchestrator (hybrid router + fallback) + 7 specialists: pulse, litreview, grants (NIH), dossier, patent, syllabus, notebooklmresearch/
🧪 Research Operations ✨v2.9.05Enterprise/cross-functional research: orchestrator + clinical-research (study design), research-finance (R&D program finance), market-research (sizing/survey/segmentation), product-research (user research) — each with onboarding + customization + opt-in autoresearch bridgeresearch-ops/
📋 Project Management9Senior PM, scrum master, Jira, Confluence, Atlassian admin, templates + bundled Atlassian Remote MCPproject-management/
🏥 Regulatory & QM18ISO 13485, MDR 2017/745, FDA, ISO 27001, GDPR, SOC 2, CAPA, risk managementra-qm-team/
🛡️ Compliance OS9Compliance operating system — controls, evidence, audit-readiness workflowscompliance-os/
💼 C-Level Advisory66Full C-suite (CEO/CTO/CFO/CMO/CRO/CPO/COO/CHRO/CISO/GC/CDO/CAIO/CCO/VPE) + founder-mode agents + orchestration + board meetings + culture & collaborationc-level-advisor/
📈 Business & Growth5Customer success, sales engineer, revenue ops, contracts & proposals, BizDev toolkitbusiness-growth/
🏭 Business Operations7Orchestrator + process-mapper, vendor-management, capacity-planner, internal-comms, knowledge-ops, procurement-optimizerbusiness-operations/
🤝 Commercial8Orchestrator + pricing-strategist, deal-desk, partnerships-architect, channel-economics, commercial-policy, rfp-responder, commercial-forecastercommercial/
💰 Finance4Financial analyst (DCF, budgeting, forecasting), SaaS metrics coach, business investment advisorfinance/

Personas

Pre-configured agent identities with curated skill loadouts, workflows, and distinct communication styles. Personas go beyond "use these skills" — they define how an agent thinks, prioritizes, and communicates.

PersonaDomainBest For
Startup CTOEngineering + StrategyArchitecture decisions, tech stack selection, team building, technical due diligence
Growth MarketerMarketing + GrowthContent-led growth, launch strategy, channel optimization, bootstrapped marketing
Solo FounderCross-domainOne-person sta

Footnotes

  1. Hermes Agent is BYO-sync tier: the repo ships a pre-generated .hermes/skills/claude-skills/ tree, but you run python scripts/sync-hermes-skills.py once locally to install into ~/.hermes/skills/. Uses the same agentskills.io SKILL.md standard — no format conversion.

  2. Mistral Vibe is also BYO-sync tier: the repo ships a pre-generated .vibe/skills/claude-skills/ tree, run ./scripts/vibe-install.sh once locally to install into ~/.vibe/skills/. Same agentskills.io SKILL.md standard — no format conversion. Docs: https://docs.mistral.ai/mistral-vibe/agents-skills.

View source on GitHub