yc-default-alive-calculator SKILL.md skillA

yc-default-alive-calculator from magnus919/agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add magnus919/agent-skills/yc-default-alive-calculator@git:20260902.035e58d

Pins git:20260902.035e58d in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
magnus919/agent-skills
Path
yc-default-alive-calculator/SKILL.md
Versions recorded
4
Latest version
git:20260902.035e58d, committed Sep 2, 2026
First version recorded
Jun 13, 2026
Size
8,322 bytes
Repository stars
166
License
MIT

Evaluate startup runway, burn, revenue, and profitability trajectory using the Default Alive / Default Dead framework. Do not use this skill for weekly growth experiments or operating growth decisions; use `yc-weekly-growth-compass` for those decisions.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Default Alive / Default Dead Calculator

A startup is "default alive" if its current revenue trajectory will reach profitability before it runs out of cash — without additional funding. It is "default dead" if it will run out of money first. This is the single most important financial diagnostic Paul Graham developed at Y Combinator.

**This is not a fundraising model.** It's a reality check. The answer determines whether fundraising is optional or existential.

## When to Load

| Trigger | Example |
|---------|---------|
| "Am I default alive?" | Founder asking about runway |
| "How much runway do I have?" | Financial planning |
| "Should I raise money?" | Strategic decision |
| "What's my burn multiple?" | Investor-ready metrics |
| "How long until we break even?" | Trajectory check |
| "Default alive/dead analysis" | Explicit framework request |

## When Not to Use

- **Detailed financial planning.** This is a diagnostic, not a budget. It projects one growth curve with fixed assumptions; it does not model hiring plans, contract timing, seasonality, or capital expenditures. Use a proper financial model for those.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add magnus919/agent-skills/yc-default-alive-calculator@sha256:71f0e2ea5f0778ff

The line at the top of this page pins the label git:20260902.035e58d, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_yrkyob4vbi3mlnri.svg)](https://markdownregistry.com/a/art_yrkyob4vbi3mlnri)

5 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 4 versions of this file, between Jun 13, 2026 and Sep 2, 2026, about one every 27 days.

versioncommittedcommitsizeaudit
git:20260902.035e58d latest2026-09-02 035e58d 8,322 BA view · diff
git:20260804.f9db3db2026-08-04 f9db3db 8,506 BA view · diff
git:20260711.a5f7e742026-07-11 a5f7e74 6,880 BA view · diff
git:20260613.d8a11c22026-06-13 d8a11c2 6,912 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (8322 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

magnus919/agent-skills · 166 stars · license MIT · pushed 2026-11-04 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_yrkyob4vbi3mlnri
GET https://markdownregistry.com/api/v1/resolve?ref=magnus919/agent-skills/yc-default-alive-calculator
GET https://markdownregistry.com/api/v1/blob/71f0e2ea5f0778ffcc426cd429d42b045f3a9698d83f853922ccc70b2fe6a635

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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