efcore-patterns

efcore-patterns is a skill for Claude Code from F-U-S-E-E/FuseDevelopmentGroup. It costs 35 tokens per session (3,882 once invoked), scanned A, original, AGPL-3.0.

A set of Entity Framework Core patterns for database access, including read-only queries, related data loading, and migration management. Entity Framework Core is a .NET tool for working with databases through C# objects.

In plain words
What is it for?
Use it when configuring no-tracking reads, splitting queries with related collections, or organizing database migrations.
Why use it?
It helps avoid common performance and deployment mistakes when applications query databases or apply schema changes.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

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/f-u-s-e-e/fusedevelopmentgroup/efcore-patterns
Any agent
npx skills add F-U-S-E-E/FuseDevelopmentGroup --skill efcore-patterns
Clone the repo
git clone --depth 1 https://github.com/F-U-S-E-E/FuseDevelopmentGroup

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 efcore-patterns

README.md
[![agentmods](https://agentmods.dev/badge/skills/f-u-s-e-e/fusedevelopmentgroup/efcore-patterns.svg)](https://agentmods.dev/skills/f-u-s-e-e/fusedevelopmentgroup/efcore-patterns)
Your own site
<a href="https://agentmods.dev/skills/f-u-s-e-e/fusedevelopmentgroup/efcore-patterns"><img src="https://agentmods.dev/badge/skills/f-u-s-e-e/fusedevelopmentgroup/efcore-patterns.svg" alt="Measured on agentmods" height="20"></a>
Per session 35 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,882 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 5.1 $0.00035 $0.03882
Opus 5 $0.00017 $0.01941
Sonnet 5 $0.00007 $0.00776
Haiku 4.5 $0.00003 $0.00388

Measured 2d ago against content hash 908a5e366c02, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

efcore-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 2d 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/efcore-patterns/SKILL.md · 630 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. 2d ago First seen · 630 lines · 35 tokens per session scan A 908a5e366c02

Subscribe to this mod's changes

efcore-patterns is a skill published in the GitHub repository F-U-S-E-E/FuseDevelopmentGroup (22 stars, last pushed 12d ago), licensed AGPL-3.0. It adds 35 tokens to every session and 3,882 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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