postgresql SKILL.md skillA
postgresql from iliaal/whetstone is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add iliaal/whetstone/postgresql@git:20260227.215f429Pins git:20260227.215f429 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- iliaal/whetstone
- Path
distillery/generated-skills/postgresql/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260227.215f429, committed Feb 27, 2026
- Size
- 5,633 bytes
- Repository stars
- 35
- License
- MIT
PostgreSQL schema design, query optimization, indexing, and administration. Use when writing schemas, queries, migrations, or mentions PostgreSQL, Postgres, JSONB, partitioning, RLS, CTEs, window functions, EXPLAIN ANALYZE, or connection pooling.
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
# PostgreSQL ## Data Type Defaults | Need | Use | Avoid | |------|-----|-------| | Primary key | `BIGINT GENERATED ALWAYS AS IDENTITY` | `SERIAL`, `BIGSERIAL` | | Timestamps | `TIMESTAMPTZ` | `TIMESTAMP` (loses timezone) | | Text | `TEXT` | `VARCHAR(n)` unless constraint needed | | Money | `NUMERIC(precision, scale)` | `MONEY`, `FLOAT` | | Boolean | `BOOLEAN` with `NOT NULL DEFAULT` | nullable booleans | | JSON | `JSONB` | `JSON` (no indexing), text JSON | | UUID | `gen_random_uuid()` (PG13+) | `uuid-ossp` extension | | IP addresses | `INET` / `CIDR` | text | | Ranges | `TSTZRANGE`, `INT4RANGE`, etc. | pair of columns | ## Schema Rules - Every FK column gets an index (PG does NOT auto-create these) - `NOT NULL` on every column unless NULL has business meaning - `CHECK` constraints for domain rules at DB level - `EXCLUDE` constraints for range overlaps: `EXCLUDE USING gist (room WITH =, during WITH &&)` - Default `created_at TIMESTAMPTZ NOT NULL DEFAULT now()` - Separate `updated_at` with trigger, never trust app layer alone - Use `BIGINT` PKs — cheaper JOINs than UUID, better index locality ## Index Strategy | Type | Use When | |------|----------| …
Read the whole file at its exact version.
How to install
mdr add iliaal/whetstone/postgresql@sha256:6fc8e4d45029b5acThe line at the top of this page pins the label git:20260227.215f429, 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_temf4vihqtxbtr6k)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Feb 27, 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 (5633 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
iliaal/whetstone · 35 stars · license MIT · pushed 2026-11-04 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_temf4vihqtxbtr6k GET https://markdownregistry.com/api/v1/resolve?ref=iliaal/whetstone/postgresql GET https://markdownregistry.com/api/v1/blob/6fc8e4d45029b5ac273b48d75525d082d301e439076db70241259560eb7a9975
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.
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