databases

databases is a skill for Claude Code, Codex from duongthinh03/portfolio. It costs 86 tokens per session (1,822 once invoked), scanned B, original, no licence file.

A database toolkit for MongoDB, a document database, and PostgreSQL, a relational database queried with SQL.

In plain words
What is it for?
Use it to design schemas, write MongoDB aggregations and PostgreSQL queries, optimize indexes, perform migrations, and configure database systems.
Why use it?
It helps design stored data, write and improve queries, and manage changes without treating every database as the same kind of system.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing. Also seen: installed under .agents/ (shared by several agents).

Good fit Use it to design schemas, write MongoDB aggregations and PostgreSQL queries, optimize indexes, perform migrations, and configure database systems.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/duongthinh03/portfolio/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 duongthinh03/portfolio --skill databases
Clone the repo
git clone --depth 1 https://github.com/duongthinh03/portfolio

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 databases

README.md
[![agentmods](https://agentmods.dev/badge/skills/duongthinh03/portfolio/databases/github.svg)](https://agentmods.dev/skills/duongthinh03/portfolio/databases)
Your own site
<a href="https://agentmods.dev/skills/duongthinh03/portfolio/databases"><img src="https://agentmods.dev/badge/skills/duongthinh03/portfolio/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 databases

Your own site · 80×15
<a href="https://agentmods.dev/skills/duongthinh03/portfolio/databases"><img src="https://agentmods.dev/badge/skills/duongthinh03/portfolio/databases.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 86 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,822 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. 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 $0.00086 $0.01822
Opus 5.5 $0.00034 $0.00729
Sonnet 5.5 $0.00017 $0.00364
Haiku 4.5 $0.00009 $0.00182

Measured 1mo ago against content hash 0567d1899bd7, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

databases scanned grade B with 1 finding 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 1mo ago.

The scan reads SKILL.md. This mod also ships 6 executable files (scripts/db_backup.py, scripts/db_migrate.py, scripts/db_performance_check.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

sudo apt-get install postgresql postgresql-contrib
.agents/skills/databases/SKILL.md · 233 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

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. 1mo ago First seen · 233 lines · 86 tokens per session scan B 0567d1899bd7

Subscribe to this mod's changes

databases is a skill published in the GitHub repository duongthinh03/portfolio (84 stars, last pushed 3mo ago), with no licence file. It adds 86 tokens to every session and 1,822 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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