database-performance

database-performance is a skill for Claude Code, Codex from wshaddix/dotnet-skills. It costs 70 tokens per session (3,285 once invoked), scanned A, original, no licence file.

Guidance for making database access in .NET applications faster and less wasteful with Entity Framework Core or Dapper.

In plain words
What is it for?
Use it when designing data-access code, investigating slow queries, choosing between EF Core and Dapper, or separating read and write models.
Why use it?
It helps avoid repeated database queries, loading unnecessary rows, and combining data in application code when the database can do the work.

Skill for Claude CodeCodex

Part of the dotnet-skills plugin — 167 skills, 12 commands, 16 agents shipped together

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.

agentmods
npx agentmods add skills/wshaddix/dotnet-skills/database-performance
Any agent
npx skills add wshaddix/dotnet-skills --skill database-performance
Clone the repo
git clone --depth 1 https://github.com/wshaddix/dotnet-skills

Made for: Claude Code, Codex.

Or install dotnet-skills, the plugin that ships this one along with the rest of its 167 skills, 12 commands, 16 agents.

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 database-performance

README.md
[![agentmods](https://agentmods.dev/badge/skills/wshaddix/dotnet-skills/database-performance.svg)](https://agentmods.dev/skills/wshaddix/dotnet-skills/database-performance)
Your own site
<a href="https://agentmods.dev/skills/wshaddix/dotnet-skills/database-performance"><img src="https://agentmods.dev/badge/skills/wshaddix/dotnet-skills/database-performance.svg" alt="Measured on agentmods" height="20"></a>
Per session 70 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,285 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00070 $0.03285
Opus 5 $0.00035 $0.01643
Sonnet 5 $0.00014 $0.00657
Haiku 4.5 $0.00007 $0.00329

Measured 5d ago against content hash 56e7a8390a6f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

database-performance 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 5d 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.

skills/database-performance/SKILL.md · 504 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. 5d ago First seen · 504 lines · 70 tokens per session scan A 56e7a8390a6f

Subscribe to this mod's changes

database-performance is a skill published in the GitHub repository wshaddix/dotnet-skills (79 stars, last pushed 6mo ago), with no licence file. It adds 70 tokens to every session and 3,285 once invoked, about $0.0003 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 2026-08-30.

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