startup-lifecycle

startup-lifecycle is a skill for Claude Code from saitarrun/Devforge-ai. It costs 45 tokens per session (763 once invoked), scanned A, original, Apache-2.0.

A guide for taking a software startup from an initial product idea through launch, usage measurement, pricing, growth, and operational scaling. It covers concepts such as SaaS, a subscription-based software business, and metrics such as churn and recurring revenue.

In plain words
What is it for?
Use it to shape an MVP, plan product-market-fit measurements, design subscription or usage pricing, analyze retention and acquisition costs, and prepare compliance work.
Why use it?
It brings product, business, and engineering decisions into one lifecycle so teams can track whether the startup is gaining and retaining customers.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the devforge-ai plugin — 48 skills, 17 commands, 10 agents shipped together

Good fit Use it to shape an MVP, plan product-market-fit measurements, design subscription or usage pricing, analyze retention and acquisition costs, and prepare compliance work.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/saitarrun/devforge-ai/startup-lifecycle
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 saitarrun/Devforge-ai --skill startup-lifecycle
Clone the repo
git clone --depth 1 https://github.com/saitarrun/Devforge-ai

Made for: Claude Code.

Or install devforge-ai, the plugin that ships this one along with the rest of its 48 skills, 17 commands, 10 agents.

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 startup-lifecycle

README.md
[![agentmods](https://agentmods.dev/badge/skills/saitarrun/devforge-ai/startup-lifecycle.svg)](https://agentmods.dev/skills/saitarrun/devforge-ai/startup-lifecycle)
Your own site
<a href="https://agentmods.dev/skills/saitarrun/devforge-ai/startup-lifecycle"><img src="https://agentmods.dev/badge/skills/saitarrun/devforge-ai/startup-lifecycle.svg" alt="Measured on agentmods" height="20"></a>
Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 763 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 $0.00045 $0.00763
Opus 5 $0.00023 $0.00381
Sonnet 5 $0.00009 $0.00153
Haiku 4.5 $0.00005 $0.00076

Measured 3d ago against content hash f96911906947, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

startup-lifecycle 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 3d 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.

skills/startup-lifecycle/SKILL.md · 63 lines

How it starts

The opening of the file, as written. The whole thing — 63 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Software Startup Full Lifecycle & Growth Skill

This skill guides founders and engineering teams through building, launching, operating, monetizing, and scaling a high-growth SaaS / AI startup directly from the repository.


1. The Startup Growth Engine Matrix

[Phase 1: 0 to 1 — Problem-Market Fit & MVP]
  ↳ Grill-Me Ideation → Scope Minimization (3 Tracer Slices) → Landing Page Waitlist + Stripe Pre-orders
          ↓
[Phase 2: 1 to 10 — Product-Market Fit (PMF) & Telemetry]
  ↳ PostHog / Mixpanel Event Tracking → North Star Metric → Sean Ellis PMF Survey (>40% "Very Disappointed")
          ↓
[Phase 3: 10 to 100 — SaaS Monetization & Growth Loops]
  ↳ Stripe Billing / Polar / LemonSqueezy (Subscriptions, Metered Tokens, Team Seats) → Referral & SEO Loops
          ↓
[Phase 4: Scale — Unit Economics & Operational Governance]
  ↳ Churn & Retention Cohorts → LTV / CAC Ratio (>3:1) → SOC2 / Compliance → Self-Serve Enterprise Upgrades

2. Startup Engineering Standards

A. SaaS Monetization & Pricing Architecture

  • Pricing Models:
    • Tiered Subscriptions: Free / Starter / Pro / Enterprise.
    • Usage-Based (Metered): Bill per API call, token consumed, or storage GB.
    • Per-Seat: Scaled pricing per team member.
  • Billing Provider Integration: Stripe Elements, Customer Portal, Webhook Handlers (invoice.payment_succeeded, customer.subscription.deleted), and dunning email triggers.

B. Founder Telemetry & Analytics Instrumentation

  • North Star Metric: Track the one event indicating primary user value (e.g. query_executed, report_exported, claim_processed).
  • Funnel Drop-Off Tracking:
    • User Visited Landing PageSigned UpCompleted OnboardingInvited TeammatePaid.
  • Feature Flags & A/B Testing: PostHog / LaunchDarkly flags to test pricing experiments and checkout flows safely.

C. Automated Customer Feedback & Churn Mitigation

  • NPS & In-App Surveys: Automated survey trigger after 7 days of active usage.
  • Cancellation Flow: Capture exit reason (Too expensive, missing feature, buggy, switched to competitor) and trigger discount/rescue offer.

Read the full file on GitHub · 63 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. 3d ago First seen · 63 lines · 45 tokens per session scan A f96911906947

Subscribe to this mod's changes

startup-lifecycle is a skill published in the GitHub repository saitarrun/Devforge-ai (5 stars, last pushed 24d ago), licensed Apache-2.0. It adds 45 tokens to every session and 763 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.

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