postgresql SKILL.md skillA
postgresql from iliaal/ai-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add iliaal/ai-skills/postgresql@git:20261011.09c16dfPins git:20261011.09c16df in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- iliaal/ai-skills
- Path
skills/postgresql/SKILL.md- Versions recorded
- 7
- Latest version
- git:20261011.09c16df, committed Oct 11, 2026
- First version recorded
- Aug 10, 2026
- Size
- 3,953 bytes
- Repository stars
- 45
- License
- MIT
PostgreSQL schema design, query optimization, indexing, and administration. Use when working with PostgreSQL, JSONB, partitioning, RLS, CTEs, window functions, or EXPLAIN ANALYZE.
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 ## Working rules - Preserve raw bytes as bytes when fidelity matters; choose parsed types separately for querying. - Treat deployed migrations as immutable and account for old and new application versions during rollout. - **Data rollback needs provenance.** Selecting rows by the destination value can also select rows the forward migration never touched. When reversibility is required, preserve affected identities and original values under an explicit policy for subsequent writes. Verify restored data with the application version that will read it. - Check lock duration and transaction scope; protect read-modify-write paths against concurrent updates. - Match index predicates and NULL semantics to every writer and migration query. - Measure query changes with representative data and actual plans; verify invariants as database outcomes. ## 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` | …
Read the whole file at its exact version.
How to install
mdr add iliaal/ai-skills/postgresql@sha256:230c2cba8314a8f2The line at the top of this page pins the label git:20261011.09c16df, 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_gvsjcgf3hklw6rma)
6 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 7 versions of this file, between Aug 10, 2026 and Oct 11, 2026, about one every 10 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261011.09c16df latest | 2026-10-11 | 09c16df | 3,953 B | A | view · diff |
| git:20260926.7b0520a | 2026-09-26 | 7b0520a | 3,392 B | A | view · diff |
| git:20260908.6c9fed1 | 2026-09-08 | 6c9fed1 | 3,395 B | A | view · diff |
| git:20260906.9107cb1 | 2026-09-06 | 9107cb1 | 17,827 B | A | view · diff |
| git:20260829.3d61391 | 2026-08-29 | 3d61391 | 17,672 B | A | view · diff |
| git:20260829.a566ff1 | 2026-08-29 | a566ff1 | 16,824 B | A | view · diff |
| git:20260810.eee1e9c | 2026-08-10 | eee1e9c | 16,369 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 (3953 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/ai-skills · 45 stars · license MIT · pushed 2026-10-31 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_gvsjcgf3hklw6rma GET https://markdownregistry.com/api/v1/resolve?ref=iliaal/ai-skills/postgresql GET https://markdownregistry.com/api/v1/blob/230c2cba8314a8f23ce7562620728c672fc95b40d8de576512227644afbe6d2d
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.
More from iliaal/ai-skills
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