define-hypothesis SKILL.md skillA
define-hypothesis from product-on-purpose/pm-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add product-on-purpose/pm-skills/define-hypothesis@v2.1.0Pins v2.1.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- product-on-purpose/pm-skills
- Path
skills/define-hypothesis/SKILL.md- Versions recorded
- 5
- Latest version
- v2.1.0, committed Jun 10, 2026
- First version recorded
- Mar 25, 2026
- Size
- 3,863 bytes
- Repository stars
- 790
- License
- Apache-2.0
Defines a testable hypothesis with clear success metrics and a validation approach. Use when forming assumptions to test or aligning a team on what success looks like, before any experiment is designed. To design the A/B test or experiment that will validate the hypothesis, use measure-experiment-design.
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
<!-- PM-Skills | https://github.com/product-on-purpose/pm-skills | Apache 2.0 --> # Hypothesis A hypothesis is a testable prediction about how a change will affect user behavior or business outcomes. It transforms assumptions into explicit statements that can be validated or invalidated through experimentation. Well-formed hypotheses prevent teams from building features based on untested beliefs and create shared understanding of what success looks like. ## When to Use - After problem framing, before committing to a solution - When designing experiments or A/B tests - When team members have differing assumptions about user behavior - Before investing significant engineering resources in a feature - When pivoting direction and need to validate the new approach ## When NOT to Use - You are ready to design the actual A/B test (variants, sample size, duration) -> use `measure-experiment-design`; this skill frames what to test, not how - The problem itself is still unframed -> use `define-problem-statement` first - You want to organize many assumptions and ideas into a discovery structure -> use `define-opportunity-tree` …
Read the whole file at its exact version.
How to install
mdr add product-on-purpose/pm-skills/define-hypothesis@sha256:532e6df9892ed3d5The line at the top of this page pins the label v2.1.0, 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_4wfgtwls2gfpcz3s)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Mar 25, 2026 and Jun 10, 2026, about one every 19 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v2.1.0 latest | 2026-06-10 | 152b175 | 3,863 B | A | view · diff |
| v2.0.1 | 2026-06-10 | b8ccff6 | 3,191 B | A | view · diff |
| v2.0.0 | 2026-05-20 | be1352b | 3,073 B | A | view · diff |
| v2.0.0 | 2026-04-23 | 8ab0f81 | 3,067 B | A | view · diff |
| v2.0.0 | 2026-03-25 | 0ab0a60 | 3,069 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 (3863 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
product-on-purpose/pm-skills · 790 stars · license Apache-2.0 · pushed 2026-11-03 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_4wfgtwls2gfpcz3s GET https://markdownregistry.com/api/v1/resolve?ref=product-on-purpose/pm-skills/define-hypothesis GET https://markdownregistry.com/api/v1/blob/532e6df9892ed3d5925c95b538ff4107d971893c0a7c2edace6f665870cec0af
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.