agentmods.dev

postgresql-patterns

postgresql-patterns is a skill for Claude Code from kinncj/Heimdall. It costs 29 tokens per session (619 once invoked), scanned A, original, AGPL-3.0.

A skill for applying PostgreSQL patterns to database schemas, migrations, and queries, including SQL that can be safely run more than once. PostgreSQL is a relational database system.

In plain words
What is it for?
Use it when creating PostgreSQL tables, changing schemas, writing migrations, or building queries.
Why use it?
It helps avoid migration and query mistakes and makes repeated database setup safer.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

not rated 70repo 2mo ago A scan 29 tokens AGPL-3.0

Good fit Use it when creating PostgreSQL tables, changing schemas, writing migrations, or building queries.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/kinncj/heimdall/postgresql-patterns
View source ↗ kinncj/Heimdall
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 kinncj/Heimdall --skill postgresql-patterns
Clone the repo
git clone --depth 1 https://github.com/kinncj/Heimdall

Made for: Claude Code.

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 postgresql-patterns

README.md
[![agentmods](https://agentmods.dev/badge/skills/kinncj/heimdall/postgresql-patterns/github.svg)](https://agentmods.dev/skills/kinncj/heimdall/postgresql-patterns)
Your own site
<a href="https://agentmods.dev/skills/kinncj/heimdall/postgresql-patterns"><img src="https://agentmods.dev/badge/skills/kinncj/heimdall/postgresql-patterns/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 postgresql-patterns

Your own site · 80×15
<a href="https://agentmods.dev/skills/kinncj/heimdall/postgresql-patterns"><img src="https://agentmods.dev/badge/skills/kinncj/heimdall/postgresql-patterns.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 619 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 unknown 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 $0.00029 $0.00619
Opus 5.5 $0.00012 $0.00248
Sonnet 5.5 $0.00006 $0.00124
Haiku 4.5 $0.00003 $0.00062

Measured 2mo ago against content hash 561e7337f427, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

postgresql-patterns 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 2mo 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.

.claude/skills/postgresql-patterns/SKILL.md · 94 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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. 2mo ago First seen · 94 lines · 29 tokens per session scan A 561e7337f427

Subscribe to this mod's changes

postgresql-patterns is a skill published in the GitHub repository kinncj/Heimdall (70 stars, last pushed 2mo ago), licensed AGPL-3.0. It adds 29 tokens to every session and 619 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-09-04.

DatabasesPostgreSQL
Related

postgresql-patterns compared with skills from other repositories

postgresql-patterns next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
postgresql-patternskinncj/HeimdallSkill702mo agoAGPL-3.0A29Claude Code
alloydb-basicsgoogle/skillsSkill24ktodayApache-2.0A72Claude Code, Codex
postgresql-table-designwshobson/agentsSkill42kyesterdayMITA37Claude Code
db-repairgarrytan/gbrainSkill32ktodayMITA96Claude Code
volcengine-rds-postgresqlbytedance/agentkit-samplesSkill4843d agoApache-2.0A63Claude Code, Codex
dsqlawslabs/agent-pluginsSkill9374d agoApache-2.0A246Claude Code
postgresdbericrisco/rsc-harnessSkill5555d agoMITA91Claude Code, Codex