usability-heuristics SKILL.md skillA
usability-heuristics from jnpiyush/agentx is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add jnpiyush/agentx/usability-heuristics@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- jnpiyush/agentx
- Path
.github/skills/design/usability-heuristics/SKILL.md- Versions recorded
- 2
- Latest version
- v1.0.0, committed Sep 15, 2026
- First version recorded
- May 13, 2026
- Size
- 8,497 bytes
- Repository stars
- 19
- License
- Apache-2.0
Score a UX prototype or shipped UI against Nielsen-10 heuristics with a severity rubric. Use when reviewing a design, running prototype-auditor Pass 7, or producing a heuristic evaluation report. Mechanically maps each heuristic to inspection prompts, severity (0-4), and fix patterns so two reviewers reach the same score.
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
# Usability Heuristics > WHEN: A prototype, page, or flow needs an evidence-based usability check beyond accessibility and visual polish. This skill is the canonical Frontier heuristic-evaluation procedure consumed by `prototype-audit` Pass 7. ## When to Use This Skill - Before declaring a prototype review-ready - During the prototype-auditor Pass 7 - When a stakeholder asks "is this actually usable?" - When choosing between two layouts to ship Not a replacement for user testing. It is a structured expert inspection that catches the obvious failures before they reach users. ## Authoritative Sources | Source | What it covers | |--------|----------------| | Nielsen Norman Group, 10 Usability Heuristics (1994, updated) | Heuristic definitions | | Jakob Nielsen, Severity Ratings for Usability Problems | 0-4 severity scale | | Bruce Tognazzini, First Principles of Interaction Design | Complementary principles | | Don Norman, The Design of Everyday Things | Affordance, mapping, feedback | | Baymard Institute UX research | Empirical e-commerce / form data | Cite the heuristic by number in every finding so the report is auditable. ## The Ten Heuristics …
Read the whole file at its exact version.
How to install
mdr add jnpiyush/agentx/usability-heuristics@sha256:1d47e4e4744c8248The line at the top of this page pins the label v1.0.0, 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_bhgvwugvdoyslgig)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between May 13, 2026 and Sep 15, 2026, about one every 124 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.0.0 latest | 2026-09-15 | f17c505 | 8,497 B | A | view · diff |
| v1.0.0 | 2026-05-13 | 173370f | 8,493 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 (8497 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
jnpiyush/agentx · 19 stars · license Apache-2.0 · pushed 2026-11-04 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_bhgvwugvdoyslgig GET https://markdownregistry.com/api/v1/resolve?ref=jnpiyush/agentx/usability-heuristics GET https://markdownregistry.com/api/v1/blob/1d47e4e4744c8248bf4363ed842db7b7eeb54f075906984689424af73b3a1fbf
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.