unit-economics SKILL.md skillA
unit-economics from cbrock84/headcount is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add cbrock84/headcount/unit-economics@git:20260916.e72e404Pins git:20260916.e72e404 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- cbrock84/headcount
- Path
plugins/finance/skills/unit-economics/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260916.e72e404, committed Sep 16, 2026
- First version recorded
- Aug 28, 2026
- Size
- 3,310 bytes
- Repository stars
- 2,543
- License
- MIT
Establishes whether the business makes money on each customer or unit — contribution margin, acquisition cost, payback period, lifetime value, and the cohort behavior underneath. Use this to assess whether growth is profitable, evaluate a channel or segment, support a pricing decision, judge how fast the business can afford to grow, or diagnose why revenue growth is not producing profit.
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
# Unit economics The question is simple and usually unanswered: does one more customer make the business better off, and how long does that take? ## Build it in this order 1. **Define the unit.** A customer, an account, a seat, an order. State it, because most disagreements about unit economics are disagreements about the unit. 2. **Contribution margin** — revenue per unit minus the costs that vary with it. Include everything that actually varies: payment processing, hosting attributable to usage, support load, delivery, third-party fees. Understating variable cost is the single most common error and it flatters everything downstream. 3. **Acquisition cost** — fully loaded. All sales and marketing spend, including salaries, divided by customers acquired in the same period. Excluding people costs is the second most common error and typically understates by half or more. 4. **Payback period** — acquisition cost divided by monthly contribution. This is the number that governs how fast you can grow without financing it. 5. **Lifetime value** — contribution × expected lifetime, from observed retention. Not from a …
Read the whole file at its exact version.
How to install
mdr add cbrock84/headcount/unit-economics@sha256:eac0b3d1d0c49e35The line at the top of this page pins the label git:20260916.e72e404, 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.
[](https://markdownregistry.com/a/art_55l6jso5toxlla5w)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Aug 28, 2026 and Sep 16, 2026, about one every 19 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260916.e72e404 latest | 2026-09-16 | e72e404 | 3,310 B | A | view · diff |
| git:20260828.f80dcb5 | 2026-08-28 | f80dcb5 | 2,971 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (3310 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
cbrock84/headcount · 2,543 stars · license MIT · pushed 2026-10-18 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_55l6jso5toxlla5w GET https://markdownregistry.com/api/v1/resolve?ref=cbrock84/headcount/unit-economics GET https://markdownregistry.com/api/v1/blob/eac0b3d1d0c49e35ac08c24026f4705c87be2fc75eb27e90ec2b783b2ab145f1
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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