sql-database

sql-database is a skill for Claude Code, Codex from jnotsknab/mux-swarm. It costs 41 tokens per session (1,002 once invoked), scanned A, original, GPL-3.0.

A skill for querying and inspecting structured data stored in CSV, Parquet, or JSON files, SQLite databases, and live PostgreSQL databases. It uses the data's schema to guide safer queries.

In plain words
What is it for?
Profiling data, running SQL queries, inspecting schemas, and building data-processing pipelines.
Why use it?
It reduces errors when exploring unfamiliar tables or files and helps avoid unsafe database queries.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Profiling data, running SQL queries, inspecting schemas, and building data-processing pipelines.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/jnotsknab/mux-swarm/sql-database
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 jnotsknab/mux-swarm --skill sql-database
Clone the repo
git clone --depth 1 https://github.com/jnotsknab/mux-swarm

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 sql-database

README.md
[![agentmods](https://agentmods.dev/badge/skills/jnotsknab/mux-swarm/sql-database/github.svg)](https://agentmods.dev/skills/jnotsknab/mux-swarm/sql-database)
Your own site
<a href="https://agentmods.dev/skills/jnotsknab/mux-swarm/sql-database"><img src="https://agentmods.dev/badge/skills/jnotsknab/mux-swarm/sql-database/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 sql-database

Your own site · 80×15
<a href="https://agentmods.dev/skills/jnotsknab/mux-swarm/sql-database"><img src="https://agentmods.dev/badge/skills/jnotsknab/mux-swarm/sql-database.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 41 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,002 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 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 $0.00041 $0.01002
Opus 5.5 $0.00016 $0.00401
Sonnet 5.5 $0.00008 $0.00200
Haiku 4.5 $0.00004 $0.00100

Measured 1mo ago against content hash 51e14b4d5b5f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

sql-database scanned grade A 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.

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.

Runs shell commandslowCapability

Expected in a hook, worth knowing in a rule or an instructions file.

subprocess.run(["uv", "pip", "install", "duckdb"])
Skills/bundled/sql-database/SKILL.md · 155 lines

The source is not reproduced here

Licensed GPL-3.0

The repository is licensed GPL-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. 1mo ago First seen · 155 lines · 41 tokens per session scan A 51e14b4d5b5f

Subscribe to this mod's changes

sql-database is a skill published in the GitHub repository jnotsknab/mux-swarm (9 stars, last pushed yesterday), licensed GPL-3.0. It adds 41 tokens to every session and 1,002 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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