factory-data-layer SKILL.md skillA
factory-data-layer from nonlinear-xyz/factory-kit is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add nonlinear-xyz/factory-kit/factory-data-layer@git:20260716.517fb94Pins git:20260716.517fb94 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- nonlinear-xyz/factory-kit
- Path
skills/factory-data-layer/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260716.517fb94, committed Jul 16, 2026
- Size
- 13,415 bytes
- Repository stars
- 9
- License
- MIT
Database schema, ORM, and migration conventions across builds. Drizzle as default with domain-partitioned schema modules, shared `timestamps` helper, multi-tenancy keys with cascade delete, `pgTableCreator` prefixing, JSONB for flexible attributes, schema-derived type exports, polymorphic table patterns, ESLint Drizzle rules. Covers when to escape to raw SQL or Supabase auto-types.
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
# Factory data layer Each section leads with **Principle** (one sentence, stack-agnostic), then **Why** (constraint → option → tradeoff), then **Recipe** (the Drizzle / Postgres shape we use), and **Failure mode** when there's one to name. Sections that are pure style with no deeper truth are marked `Recipe only`. ## ORM pick — match the data shape, not the comfort **Principle.** Use the ORM whose abstractions match your schema's shape; don't escape to raw SQL by default. **Why.** Raw SQL with hand-mapped row-to-object code is verbose, error-prone, and gives the type system nothing to check. An ORM with `$inferSelect`-style derivation means the schema *is* the type — one source of truth, one place to refactor. The cost of an ORM is one query DSL to learn; the cost of raw SQL is every hand-written mapper and every silent type drift. **Recipe.** | ORM | Pick when | |---|---| | **Drizzle** | Default. Postgres + TypeScript. Type-safe queries. Pairs with Better Auth's `drizzleAdapter`. | | **Supabase auto-generated types** | Project commits to Supabase Auth + RLS heavily. RLS does real work. | …
Read the whole file at its exact version.
How to install
mdr add nonlinear-xyz/factory-kit/factory-data-layer@sha256:59e2424716d41621The line at the top of this page pins the label git:20260716.517fb94, 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_j25bf4asmnzxk2sz)
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Versions
The registry has recorded 1 version of this file, committed on Jul 16, 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 (13415 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
nonlinear-xyz/factory-kit · 9 stars · license MIT · pushed 2026-10-29 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_j25bf4asmnzxk2sz GET https://markdownregistry.com/api/v1/resolve?ref=nonlinear-xyz/factory-kit/factory-data-layer GET https://markdownregistry.com/api/v1/blob/59e2424716d41621a989cc3e8a6a632e314e4ec04a7b02db125bfb3ddacac997
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.