exception-catalog SKILL.md skillA
exception-catalog 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/exception-catalog@git:20261014.20fc6e0Pins git:20261014.20fc6e0 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-universal/skills/exception-catalog/SKILL.md- Versions recorded
- 5
- Latest version
- git:20261014.20fc6e0, committed Oct 14, 2026
- First version recorded
- Oct 11, 2026
- Size
- 19,486 bytes
- Repository stars
- 3
- License
- MIT
Use when adding an error class or reusing one, or translating an SDK or library exception at a boundary. Owns the single catalog file, its root and bare subclasses, the stable codes, the inherited `context` dict, translation with `from exc`, the ban on swallowing a failure, best-effort compensation as the one case a scope that re-raises stops a second failure, and a failure after a committed write, which is stopped rather than re-raised. The status a transport answers with is mapped at that…
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
# Exception Catalog Every project in this style has **exactly one file** where its own exceptions are defined. It holds a root error plus one bare subclass per named error, so the catalog stays auditable in a single read and nothing raises a type that was invented at the call site. Where that file sits is the only thing that varies, and one obligation settles it for any project shape: **one catalog module, at a place every part of the codebase may import from without creating a cycle, named for what it holds.** The catalog imports nothing of the project's own, so anything may import it; put it wherever the project's own import direction makes that true. It is a module, `exceptions.py` — never `exceptions/__init__.py`, because an `__init__.py` holds only imports and `__all__` (`python-packaging`); `from myapp.exceptions import …` reads the same either way. The root class is named for the project, and every other class in the file descends from it. Where an architecture family fixes that place — `hex-architecture`, in the `pyhouse-hex` plugin, or `flat-layered`, in the `pyhouse-flat` plugin — follow it; otherwise the obligation decides: a …
Read the whole file at its exact version.
How to install
mdr add wntic/pyhouse/exception-catalog@sha256:fecff0043b3e4ab9The line at the top of this page pins the label git:20261014.20fc6e0, 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_7sxm7eujoo37qmue)
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Versions
The registry has recorded 5 versions of this file, between Oct 11, 2026 and Oct 14, 2026, more than one a day.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261014.20fc6e0 latest | 2026-10-14 | 20fc6e0 | 19,486 B | A | view · diff |
| git:20261011.2b73369 | 2026-10-11 | 2b73369 | 19,447 B | A | view · diff |
| git:20261011.45390f1 | 2026-10-11 | 45390f1 | 19,368 B | A | view · diff |
| git:20261011.ee4b568 | 2026-10-11 | ee4b568 | 19,367 B | A | view · diff |
| git:20261011.363b85e | 2026-10-11 | 363b85e | 19,340 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 (19486 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_7sxm7eujoo37qmue GET https://markdownregistry.com/api/v1/resolve?ref=wntic/pyhouse/exception-catalog GET https://markdownregistry.com/api/v1/blob/fecff0043b3e4ab98509a439cbc6a96b4dffc1330cc0c3f8669b1cf9cd40d142
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.