hex-test-app-invariants SKILL.md skillA
hex-test-app-invariants from wntic/pyhouse is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add wntic/pyhouse/hex-test-app-invariants@git:20261011.45390f1Pins git:20261011.45390f1 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- wntic/pyhouse
- Path
plugins/pyhouse-hex/skills/hex-test-app-invariants/SKILL.md- Versions recorded
- 5
- Latest version
- git:20261011.45390f1, committed Oct 11, 2026
- First version recorded
- Sep 29, 2026
- Size
- 12,643 bytes
- Repository stars
- 3
- License
- MIT
Use when testing a property of the assembled HTTP app itself rather than one route's own behaviour — a check that needs no edit when an endpoint is added or removed — or the construct smoke any entrypoint gets. Covers the catalogue's error shape on every error code the published OpenAPI document advertises, the CORS preflight and the request-size limit where the app configures them, and the app-construction smoke, each built with `create_app()` and taking its inputs from the app rather than…
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
# Hex Test — App Invariants Consult `test-principles` for the testing constitution. Where this skill contradicts `test-principles`, the constitution wins. One-shot per project. An HTTP app gets up to four files under `tests/unit/restapi/`, each of which builds the app with `create_app()` and asserts a single global property; a service with no HTTP entrypoint gets only the construct smoke, for its own entrypoint (rule 10). None of them needs to be edited when an endpoint is added or removed. None needs a store, so none waits on the integration suite's containers. An app that declares auth gains one more discovered invariant — every protected route rejects an anonymous caller — which is `hex-test-restapi-auth`'s. ## When to use vs. neighbours - Laying the cross-cutting tests for the first time → this skill. - A per-endpoint integration test → `hex-test-restapi-endpoint`. - The integration fixtures, `real_app` among them → `hex-test-integration-setup`; nothing here takes them. - The every-protected-route-rejects-an-anonymous-caller probe, and the fixtures that mint tokens → `hex-test-restapi-auth` (auth apps only; nothing here consumes them — see Rule 8). …
Read the whole file at its exact version.
How to install
mdr add wntic/pyhouse/hex-test-app-invariants@sha256:3ae62eef1c418cd0The line at the top of this page pins the label git:20261011.45390f1, 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_i7eye7ddrecn5h2w)
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Versions
The registry has recorded 5 versions of this file, between Sep 29, 2026 and Oct 11, 2026, about one every 3 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261011.45390f1 latest | 2026-10-11 | 45390f1 | 12,643 B | A | view · diff |
| git:20260929.206ab71 | 2026-09-29 | 206ab71 | 12,639 B | A | view · diff |
| git:20260929.44b0955 | 2026-09-29 | 44b0955 | 12,575 B | A | view · diff |
| git:20260929.865f3c5 | 2026-09-29 | 865f3c5 | 12,568 B | A | view · diff |
| git:20260929.9c5d54b | 2026-09-29 | 9c5d54b | 12,367 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 (12643 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
wntic/pyhouse · 3 stars · license MIT · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_i7eye7ddrecn5h2w GET https://markdownregistry.com/api/v1/resolve?ref=wntic/pyhouse/hex-test-app-invariants GET https://markdownregistry.com/api/v1/blob/3ae62eef1c418cd08caaa2ba5a8e8ad5aafd4959e82dc3946278b5fcdb91dc76
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