pmf-strategy SKILL.md skillA
pmf-strategy from kostja94/marketing-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add kostja94/marketing-skills/pmf-strategy@v1.1.1Pins v1.1.1 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- kostja94/marketing-skills
- Path
skills/strategies/launch/pmf/SKILL.md- Versions recorded
- 2
- Latest version
- v1.1.1, committed Mar 27, 2026
- First version recorded
- Mar 11, 2026
- Size
- 4,897 bytes
- Repository stars
- 1,089
- License
- MIT
When the user wants to validate product-market fit, measure PMF, or plan before scaling. Also use when the user mentions "PMF," "product-market fit," "product market fit," "Sean Ellis test," "very disappointed," "vitamin vs painkiller," "PMF validation," "premature scaling," or "validate before scale." For GTM after validation, use gtm-strategy.
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
# Strategies: Product-Market Fit Guides product-market fit (PMF) validation and measurement. PMF occurs when a product precisely meets market needs, creating widespread demand. ~99% of startups fail primarily due to PMF issues (vitamin problems, premature scaling). Use this skill when validating before scaling, measuring PMF, or diagnosing traction problems. **When invoking**: On **first use**, if helpful, open with 1–2 sentences on what this skill covers and why it matters, then provide the main output. On **subsequent use** or when the user asks to skip, go directly to the main output. ## Definition **Product-market fit** (Marc Andreessen): "Being in a good market with a product that can satisfy that market." **Signals**: Customers buying rapidly; usage growing; word-of-mouth spreading organically; high retention, low churn. ## Sean Ellis 40% Test **Question**: "How would you feel if you could no longer use [product]?" | Response | Meaning | |----------|---------| | **Very disappointed** | Strong PMF signal | | Somewhat disappointed | — | | Not disappointed | — | | N/A – I no longer use | — | …
Read the whole file at its exact version.
How to install
mdr add kostja94/marketing-skills/pmf-strategy@sha256:24f93c72d63132c2The line at the top of this page pins the label v1.1.1, 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_7am4w5odtbfm36sp)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Mar 11, 2026 and Mar 27, 2026, about one every 16 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.1.1 latest | 2026-03-27 | f1ec9f7 | 4,897 B | A | view · diff |
| v1.1.0 | 2026-03-11 | c7d87bd | 4,853 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 (4897 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
kostja94/marketing-skills · 1,089 stars · license MIT · pushed 2026-11-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_7am4w5odtbfm36sp GET https://markdownregistry.com/api/v1/resolve?ref=kostja94/marketing-skills/pmf-strategy GET https://markdownregistry.com/api/v1/blob/24f93c72d63132c2984e4e27010514bab684f84ada9c72227ce80813c4cdaf81
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.