unit-economics skillA
unit-economics is agent-read markdown (skill) from cbrock84/headcount: 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..
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns 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@git:20260916.e72e404mdr add cbrock84/headcount/unit-economics@sha256:eac0b3d1d0c49e35Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_55l6jso5toxlla5w)
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Versions
| 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 · 1,664 stars · license MIT · pushed 2026-09-17 · 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
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