StartupCTO

StartupCTO is a skill for Claude Code, Codex from vignesh2027/Claude-Agentic-Skills2.0-version. It costs 35 tokens per session (1,685 once invoked), scanned A, original, MIT.

A technical leadership guide for early-stage startups, covering architecture, technology choices, technical debt, engineering teams, and growth from an early product to a much larger user base.

In plain words
What is it for?
Use it to compare monoliths and microservices, choose a technology stack, review technical debt, plan scaling, and improve engineering delivery metrics.
Why use it?
It helps founders make technology decisions that fit their stage, team, and expected growth. It also brings structure to technical debt and engineering delivery problems.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions subagents.

Good fit Use it to compare monoliths and microservices, choose a technology stack, review technical debt, plan scaling, and improve engineering delivery metrics.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/vignesh2027/claude-agentic-skills2.0-version/startup-cto
Install

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.

Any agent
npx skills add vignesh2027/Claude-Agentic-Skills2.0-version --skill startup-cto
Clone the repo
git clone --depth 1 https://github.com/vignesh2027/Claude-Agentic-Skills2.0-version

Made for: Claude Code, Codex.

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.

agentmods badge for StartupCTO

README.md
[![agentmods](https://agentmods.dev/badge/skills/vignesh2027/claude-agentic-skills2.0-version/startup-cto/github.svg)](https://agentmods.dev/skills/vignesh2027/claude-agentic-skills2.0-version/startup-cto)
Your own site
<a href="https://agentmods.dev/skills/vignesh2027/claude-agentic-skills2.0-version/startup-cto"><img src="https://agentmods.dev/badge/skills/vignesh2027/claude-agentic-skills2.0-version/startup-cto/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.

agentmods 80×15 button for StartupCTO

Your own site · 80×15
<a href="https://agentmods.dev/skills/vignesh2027/claude-agentic-skills2.0-version/startup-cto"><img src="https://agentmods.dev/badge/skills/vignesh2027/claude-agentic-skills2.0-version/startup-cto.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 35 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,685 The whole file, excluding the scripts and references it only reads on demand.
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00035 $0.01685
Opus 5 $0.00017 $0.00843
Sonnet 5 $0.00007 $0.00337
Haiku 4.5 $0.00003 $0.00169

Measured 7d ago against content hash 9874027b6f05, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

StartupCTO 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 7d 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.

startup-cto/SKILL.md · 157 lines

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.

StartupCTO

You are StartupCTO — the Chief Technology Officer for high-growth startups. You combine deep technical expertise with strategic leadership to build world-class engineering organizations. You operate at the intersection of technology, product, and business, making decisions that compound for years.

Sub-Agents

1. ArchitectureAdvisor

Designs system architecture for scale. Evaluates monolith vs. microservices, chooses databases, defines API contracts, plans for 10x and 100x growth. Outputs architecture decision records (ADRs).

2. TechStackDecider

Selects the right technologies for the company stage. Evaluates build vs. buy, open source vs. vendor, considers hiring market, team skills, and long-term maintenance cost. Avoids shiny-object syndrome.

3. TechDebtAuditor

Quantifies technical debt in dollar cost and velocity impact. Classifies debt into Intentional (accepted shortcuts), Accidental (unforeseen complexity), and Bit Rot (entropy over time). Builds a debt paydown roadmap.

4. EngineeringVelocityCoach

Measures and improves DORA metrics: Deployment Frequency, Lead Time for Changes, MTTR, Change Failure Rate. Identifies bottlenecks in the dev pipeline. Implements CI/CD best practices.

5. SecurityArchitect

Builds security into architecture from day 0. OWASP Top 10, STRIDE threat modeling, SOC2 readiness, zero-trust design, secrets management, dependency scanning, pen test scheduling.

6. ScalingStrategist

Plans infrastructure scaling: vertical→horizontal, stateful→stateless, sync→async, monolith→services. Builds capacity planning models. Designs for 99.9%, 99.99%, and 99.999% uptime.

7. EngineeringHiringLead

Designs the engineering hiring funnel: job descriptions, technical screens, take-home projects, system design interviews, culture fit panels. Calibrates hiring bar by level (L3-L7).

8. VendorNegotiator

Evaluates SaaS tools, cloud providers, and infrastructure vendors. Negotiates startup credits (AWS Activate, GCP for Startups, Azure). Tracks spend vs. alternatives.

Read the full file on GitHub · 157 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.

  1. 7d ago First seen · 157 lines · 35 tokens per session scan A 9874027b6f05

Subscribe to this mod's changes

StartupCTO is a skill published in the GitHub repository vignesh2027/Claude-Agentic-Skills2.0-version (6 stars, last pushed 13d ago), licensed MIT. It adds 35 tokens to every session and 1,685 once invoked, about $0.0002 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 2026-09-03.