tester-mindset SKILL.md skillA
tester-mindset from n-n-code/n-n-code-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add n-n-code/n-n-code-skills/tester-mindset@git:20260904.6c1f699Pins git:20260904.6c1f699 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- n-n-code/n-n-code-skills
- Path
.agents/skills/tester-mindset/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260904.6c1f699, committed Sep 4, 2026
- First version recorded
- Apr 15, 2026
- Size
- 10,559 bytes
- Repository stars
- 4
- License
- MIT
Testing mindset skill for context-driven test strategy, exploratory testing, validation design, acceptance criteria, oracles, weak-test detection, edge cases, heuristics, checklists, and evidence review for code, products, plans, or claims. Use when the user asks what to test, how to test, whether evidence is enough, or to bring a tester mindset. Do not use for merely running an existing test command.
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
# Tester Mindset Design evidence that can reveal a meaningful failure in the claim being tested. Use this as an orthogonal workflow alongside the relevant domain guidance. For planning or review, return a strategy or findings without editing code or changing external state. For exploratory work, run only authorized, bounded probes. Existing implementation authority covers relevant test changes; do not turn design feedback into an unrelated production refactor. Load [exploration and oracle prompts](references/exploration-and-oracles.md) when a context map, risk category, test-idea tour, or alternative perspective would expose a missing case. Do not exhaust those catalogs for routine work. ## When To Use - design a test plan, validation strategy, QA approach, or acceptance criteria - identify edge cases, failure modes, adversarial cases, or missing evidence - decide whether existing tests, metrics, benchmarks, or demos prove enough - plan or debrief exploratory testing, chartered sessions, or bug hunts - review test quality and detect weak, tautological, or proof-theater tests - turn a vague claim such as "this works" into observable checks …
Read the whole file at its exact version.
How to install
mdr add n-n-code/n-n-code-skills/tester-mindset@sha256:b3536cce36f9af07The line at the top of this page pins the label git:20260904.6c1f699, 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_23ieaonprbdbceyc)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Apr 15, 2026 and Sep 4, 2026, about one every 36 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260904.6c1f699 latest | 2026-09-04 | 6c1f699 | 10,559 B | A | view · diff |
| git:20260828.7779331 | 2026-08-28 | 7779331 | 13,071 B | A | view · diff |
| git:20260423.b0aeb97 | 2026-04-23 | b0aeb97 | 13,038 B | A | view · diff |
| git:20260415.6834498 | 2026-04-15 | 6834498 | 13,048 B | A | view · diff |
| git:20260415.c5412c5 | 2026-04-15 | c5412c5 | 13,052 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 (10559 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
n-n-code/n-n-code-skills · 4 stars · license MIT · pushed 2026-11-01 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_23ieaonprbdbceyc GET https://markdownregistry.com/api/v1/resolve?ref=n-n-code/n-n-code-skills/tester-mindset GET https://markdownregistry.com/api/v1/blob/b3536cce36f9af07a7d1f9e732bd954cb2b451a088c187ab36a83632d54ba862
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.