author-tests SKILL.md skillA
author-tests from upbound/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add upbound/skills/author-tests@git:20261012.20c120ePins git:20261012.20c120e in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- upbound/skills
- Path
skills/author-tests/SKILL.md- Versions recorded
- 2
- Latest version
- git:20261012.20c120e, committed Oct 12, 2026
- First version recorded
- Oct 8, 2026
- Size
- 15,745 bytes
- Repository stars
- 4
- License
- Apache-2.0
Use this skill when user requests to write, create, author, modify, refactor or plan refactoring of Crossplane configuration tests (composition tests or E2E tests) in a control-plane project - in any language (KCL, Python, YAML, Go, go-templating). Use this rather than a generic planning mode when the user asks for a plan to refactor composition tests or e2e tests in a crossplane configuration package. Specialized skill focused only on test authoring and modification (not running tests).…
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
# Crossplane Test Authoring Author and modify Crossplane configuration tests, in any language `up test generate` supports, and write the assertion that has to fail first. ## Before you start A test's *meaning* is language-agnostic; only its *syntax* differs. Every test compiles to a `CompositionTest` or an `E2ETest` (`meta.dev.upbound.io/v1alpha1`). The rules are in this file; the object model, structuring patterns and common mistakes in [test-model.md](references/test-model.md) (read it before your first test in a project); the syntax in the charter's file for the test language (Phase 1). - Writing or changing an `E2ETest`: Phase 4. - Planning or executing a test refactor: [refactoring.md](references/refactoring.md) (plan into `.agents/tasks/REFACTOR_TESTS.md` without executing, then one item per run). - Not here: building the package or running the whole suite as a gate, except Phase 6 (`verify-configuration`); running E2E tests (`e2e-test-configuration`); implementing composition features (`author-composition`). ## Binding rules — they hold even if you open nothing else Load `control-plane-project-charter` first, or read its `SKILL.md` beside this skill's …
Read the whole file at its exact version.
How to install
mdr add upbound/skills/author-tests@sha256:e5edeeeb5696dcffThe line at the top of this page pins the label git:20261012.20c120e, 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_74pngtn2o5hsimfl)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Oct 8, 2026 and Oct 12, 2026, about one every 4 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261012.20c120e latest | 2026-10-12 | 20c120e | 15,745 B | A | view · diff |
| git:20261008.17a6e1f | 2026-10-08 | 17a6e1f | 15,648 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 (15745 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
upbound/skills · 4 stars · license Apache-2.0 · pushed 2026-10-12 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_74pngtn2o5hsimfl GET https://markdownregistry.com/api/v1/resolve?ref=upbound/skills/author-tests GET https://markdownregistry.com/api/v1/blob/e5edeeeb5696dcffa1d71fb4cf8f44d143426bff9e820de189a66d5c943b5bfe
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.