ef-core Skill for Claude: Entity Framework Core Best Practices

Makes Claude review your Entity Framework Core code and suggest fixes against a checklist of EF Core best practices.

Installs: 9.6K; on skills.sh
Stars: 40.7K; on GitHub
Updated: Oct 2026; last repo commit

SKILL.md lists 5 or 6 best-practice points under each of 8 headings: data context design, entity design, performance, migrations, querying, change tracking and saving, security, and testing. It ends by asking Claude to identify issues in your EF Core code and suggest improvements that follow them.

It is one short file with no code blocks and no scripts.

Good for

C# developers using Entity Framework Core for data access
Reviewers who want a consistent EF Core checklist

Install ef-core

Claude Code

Copy this prompt.

Install the ef-core skill in Claude Code. Run this command:

npx skills add https://github.com/github/awesome-copilot --skill ef-core

Then check that it loaded and tell me how to use it.

2
Paste it into Claude Code. It shows the change and asks before running it.

Requires Node.js.

From its listing on skills.sh. Source.

What's in the skill

When it loads

Get best practices for Entity Framework Core

Sections in SKILL.md

Data Context Design
Entity Design
Performance
Migrations
Querying
Change Tracking & Saving
Security
Testing

Key facts

Source: Listed in github/awesome-copilot, a community-created collection
Folder: 1 file including SKILL.md
Installs on skills.sh: 9,627 (Nov 2, 2026)
GitHub stars: 40,666 (Nov 2, 2026)
License: MIT
Last repo commit: Oct 30, 2026

What it includes

Keep DbContext focused; configure entities with IEntityTypeConfiguration.
Also covers constructor injection, OnModelCreating and the DbContextFactory pattern for console apps or tests.
Data Context Design
Keys, relationships, constraints, navigation properties and owned types.
Suggests owned entity types for value objects.
Entity Design
AsNoTracking for reads, pagination, projection, compiled queries, avoid N+1.
Use Include() to eager load related entities when needed.
Performance
Small, descriptively named migrations; check the SQL before production.
Also mentions migration bundles for deployment and data seeding through migrations.
Migrations
Know when IQueryable runs; prefer typed LINQ over raw SQL.
Also mentions database functions and the specifications pattern.
Querying
Batch SaveChanges, handle concurrency, use transactions, scope the DbContext.
Scoped lifetime is suggested for web apps.
Change Tracking & Saving
Parameterized queries, careful raw SQL, access permissions, encryption.
Also suggests using migrations to manage database user permissions.
Security
In-memory provider for unit tests, SQLite for integration tests.
Also mentions mocking DbContext and DbSet, testing migrations in isolation and snapshot testing for model changes.
Testing

From the official docs

Questions

What does the ef-core skill do?

It makes Claude check your Entity Framework Core code against a best-practice list and suggest improvements. The list has 8 headings with 5 or 6 points each.

How do I use it?

Install it, then ask Claude to review your EF Core code, for example "review this DbContext with the ef-core skill". SKILL.md ends by asking for issues and suggested improvements.

How do I install ef-core?

Use the install box above. The skills CLI command works for Claude Code and Codex, and the Claude tab shows the ZIP upload for the Claude app.

Does it need an API key or database access?

SKILL.md names no key, database connection or tool, and the folder bundles no scripts.

Is it safe to use?

It is advice in one file and bundles no scripts. If you ask Claude to apply the suggestions, it edits your code, so review the changes. Check any migration SQL yourself, as the skill itself advises.

How is it different from csharp-docs?

ef-core covers data access and database practice. csharp-docs covers XML documentation comments. Both are separate skills in github/awesome-copilot.

Information

updated Nov 2, 2026

Repository: github/awesome-copilot
Folder: skills/ef-core

github/awesome-copilot skills.sh

Sources

Docs, issue trackers and discussions this page is built from.

Show all 3

ef-core SKILL.md · github.com
awesome-copilot README · github.com
csharp-docs SKILL.md · github.com