database SKILL.md skillA
database from event4u-app/agent-config is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add event4u-app/agent-config/database@git:20261026.9af7ad3Pins git:20261026.9af7ad3 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- event4u-app/agent-config
- Path
src/skills/database/SKILL.md- Versions recorded
- 12
- Latest version
- git:20261026.9af7ad3, committed Oct 26, 2026
- First version recorded
- Jun 3, 2026
- Size
- 6,906 bytes
- Repository stars
- 18
- License
- MIT
Use when designing schemas and relations, tuning queries or indexes on any SQL engine, or multi-connection patterns — even when the user just says 'this query is slow'.
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
# database > **Grounded corpus (Tier-1 consultation):** symptom → index/strategy > decisions come grounded — `node > <skills-root>/corpus-grounding/scripts/ground.mjs search --manifest > <skills-root>/database/data/manifest.json "<symptom>"` returns root > cause, strategy, good-code sketch, anti-pattern, and the verification > probe (EXPLAIN expectation). Corpus: > [`data/query-tuning.csv`](data/query-tuning.csv); its engine versions and > their date live in [`data/manifest.json`](data/manifest.json) `upstream`. > Repeating them here is how this line fell two majors behind. ## When to use Use when designing schemas, optimizing queries, adding indexes, or troubleshooting database performance. This skill owns relational modeling — invariants, cardinality, keys, junction tables, index method, enum representation, referential actions. Designing or extending a schema → [`references/relational-modeling.md`](references/relational-modeling.md). Dropping or renaming anything → [`references/consumer-census.md`](references/consumer-census.md) first. Do NOT use when: …
Read the whole file at its exact version.
How to install
mdr add event4u-app/agent-config/database@sha256:f6896db391566b76The line at the top of this page pins the label git:20261026.9af7ad3, 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_4vqbyodlztjkyksh)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 12 versions of this file, between Jun 3, 2026 and Oct 26, 2026, about one every 13 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261026.9af7ad3 latest | 2026-10-26 | 9af7ad3 | 6,906 B | A | view · diff |
| git:20261026.0398330 | 2026-10-26 | 0398330 | 5,940 B | A | view · diff |
| git:20261026.55ddacd | 2026-10-26 | 55ddacd | 5,940 B | A | view · diff |
| git:20261026.e5c6d10 | 2026-10-26 | e5c6d10 | 5,941 B | A | view · diff |
| git:20261026.bc52761 | 2026-10-26 | bc52761 | 7,973 B | A | view · diff |
| git:20261014.c6c82bb | 2026-10-14 | c6c82bb | 5,941 B | A | view · diff |
| git:20261013.503b4e9 | 2026-10-13 | 503b4e9 | 5,814 B | A | view · diff |
| git:20260827.9158984 | 2026-08-27 | 9158984 | 5,819 B | A | view · diff |
| git:20260707.4f7f4a8 | 2026-07-07 | 4f7f4a8 | 5,317 B | A | view · diff |
| git:20260615.c65e605 | 2026-06-15 | c65e605 | 5,265 B | A | view · diff |
| git:20260607.1e9e435 | 2026-06-07 | 1e9e435 | 3,975 B | A | view · diff |
| git:20260603.668ed88 | 2026-06-03 | 668ed88 | 3,573 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 (6906 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
event4u-app/agent-config · 18 stars · license MIT · pushed 2026-10-31 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_4vqbyodlztjkyksh GET https://markdownregistry.com/api/v1/resolve?ref=event4u-app/agent-config/database GET https://markdownregistry.com/api/v1/blob/f6896db391566b76f9b18f954eaf95e1df647b41691abd8405435b3458b1081e
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 event4u-app/agent-config
Every file in event4u-app/agent-config