db

db is a skill for Claude Code, Codex from heyAyushh/stacc. It costs 36 tokens per session (244 once invoked), scanned A, original, MIT.

A set of PostgreSQL database and SQL guidelines for writing clear, maintainable, and efficient queries. PostgreSQL is a database system, and SQL is the language used to query and change its data.

In plain words
What is it for?
Use it when writing or reviewing SQL, changing database schemas, choosing joins and common table expressions, or investigating indexes and query performance.
Why use it?
It helps prevent unclear queries, unsafe handling of missing values, poor naming, and slow database plans. It encourages checking how PostgreSQL will actually execute a query.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it when writing or reviewing SQL, changing database schemas, choosing joins and common table expressions, or investigating indexes and query performance.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/heyayushh/stacc/databases
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add heyAyushh/stacc --skill databases
Clone the repo
git clone --depth 1 https://github.com/heyAyushh/stacc

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for db

README.md
[![agentmods](https://agentmods.dev/badge/skills/heyayushh/stacc/databases/github.svg)](https://agentmods.dev/skills/heyayushh/stacc/databases)
Your own site
<a href="https://agentmods.dev/skills/heyayushh/stacc/databases"><img src="https://agentmods.dev/badge/skills/heyayushh/stacc/databases/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for db

Your own site · 80×15
<a href="https://agentmods.dev/skills/heyayushh/stacc/databases"><img src="https://agentmods.dev/badge/skills/heyayushh/stacc/databases.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 36 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 244 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00036 $0.00244
Opus 5 $0.00018 $0.00122
Sonnet 5 $0.00007 $0.00049
Haiku 4.5 $0.00004 $0.00024

Measured 9d ago against content hash c438dc23ee6f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

db scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

configs/stacks/databases/SKILL.md · 33 lines

What it actually says

Database Stack Skill

Default guidance

Use the PostgreSQL rule file in this folder as the authoritative reference.

Workflow (use this order)

  1. Confirm schema context and target tables/columns.
  2. Draft query with explicit columns and clear aliases.
  3. Prefer CTEs for readability and reuse.
  4. Avoid NOT IN; use NOT EXISTS or LEFT JOIN ... IS NULL.
  5. Run explain analyze and address sequential scans.
  6. Add or adjust indexes if query plan needs them.

Review Checklist

  • Naming uses snake_case; SQL keywords are lowercase.
  • Explicit joins used; no implicit joins.
  • select * avoided; columns are explicit.
  • NOT IN avoided with NULL-safe alternatives.
  • Query plan checked with explain analyze.

Local Resources

  • postgresql.mdc for naming, formatting, query patterns, and performance guidance.
Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 9d ago First seen · 33 lines · 36 tokens per session scan A c438dc23ee6f

Subscribe to this mod's changes

db is a skill published in the GitHub repository heyAyushh/stacc (3 stars, last pushed 2mo ago), licensed MIT. It adds 36 tokens to every session and 244 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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