conventions SKILL.md skillA
This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.
conventions from alexander-danilenko/cortex-ai-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add alexander-danilenko/cortex-ai-skills/conventions@git:20261013.ecfffa1Pins git:20261013.ecfffa1 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- alexander-danilenko/cortex-ai-skills
- Path
plugins/engineering/cortex-testing/skills/conventions/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261013.ecfffa1, committed Oct 13, 2026
- Size
- 5,573 bytes
- Repository stars
- 17
- License
- MIT
Apply these opinionated testing conventions whenever writing, reviewing, or planning tests: what earns a test and what is coverage theatre, asserting outputs rather than mock calls, the three modes (functional, performance, security), naming and isolation rules, where to mock, and reporting findings for coverage rather than self-filtering. Includes house Jest standards for NestJS unit and contract tests, TDD discipline, and test-report structure.
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
# Testing House conventions for writing tests and test strategy. ## What a test is for A test earns its place by failing when the behaviour breaks. That single criterion resolves most arguments about what to test: if you cannot name the bug a test would catch, it is coverage theatre — it costs maintenance on every refactor and reports success while the system is broken. Two consequences run through everything below: - **Assert on outputs — return values, thrown errors, persisted state.** A test whose only assertion is `expect(mock).toHaveBeenCalledWith(…)` verifies the wiring you just wrote, not the behaviour. Rewrite the implementation correctly in a different shape and it fails; break the behaviour while keeping the calls and it passes. Both are the wrong way round. - **Test decisions, not lines.** Branches, error translation, state transitions, boundary conditions. A pass-through delegator or a field mapping with no conditional has nothing to get wrong, and a test for it only breaks when someone renames a method. …
Read the whole file at its exact version.
How to install
mdr add alexander-danilenko/cortex-ai-skills/conventions@sha256:644fd95464bab0beThe line at the top of this page pins the label git:20261013.ecfffa1, 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_tmayppn65uneer3g)
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Versions
The registry has recorded 1 version of this file, committed on Oct 13, 2026.
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 (5573 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
alexander-danilenko/cortex-ai-skills · 17 stars · license MIT · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_tmayppn65uneer3g GET https://markdownregistry.com/api/v1/resolve?ref=alexander-danilenko/cortex-ai-skills/conventions GET https://markdownregistry.com/api/v1/blob/644fd95464bab0be4f247656f3b100c39e50054580e0edb77ebd472115628676
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.
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