sigistry/marketplace · plugins/sql-safety-net/skills/schema-antipatterns/SKILL.md

schema-antipatterns skillA

schema-antipatterns is agent-read markdown (skill) from sigistry/marketplace: This skill should be used when the user mentions "schema design", "database anti-pattern", "N+1", "foreign key index", "normalization", "data types", "constraints", "ORM performance", "missing primary key", "VARCHAR 255", "boolean as int", or reviewing DDL/models for design problems. It provides a relational schema design anti-pattern catalog plus a per-ORM N+1 pattern library..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add sigistry/marketplace/schema-antipatterns@git:20260826.571bc2f
Exact content
mdr add sigistry/marketplace/schema-antipatterns@sha256:fcd3bf773b8f898e

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_efsqi3msq4notw7y.svg)](https://markdownregistry.com/a/art_efsqi3msq4notw7y)

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Versions

versioncommittedcommitsizeaudit
git:20260826.571bc2f latest2026-08-26 571bc2f 3,639 BA view · diff
git:20260715.fcd87142026-07-15 fcd8714 3,639 BA view · diff
git:20260708.c0884a92026-07-08 c0884a9 3,663 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (3639 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

GitHub

sigistry/marketplace · 3 stars · license MIT · pushed 2026-09-15 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_efsqi3msq4notw7y
GET https://markdownregistry.com/api/v1/resolve?ref=sigistry/marketplace/schema-antipatterns
GET https://markdownregistry.com/api/v1/blob/fcd3bf773b8f898e5a04b99a3bd1759121864e3544dd787ec4634fa295834fbf

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.