DB Migrations
kurealnum/dotfiles
A skill your agent uses when generating or regenerating Drizzle migration files, changing database schema tables or columns, resolving migration sequence conflicts after rebase, reviewing migration…
Get best practices for Entity Framework Core. An agent skill from github/awesome-copilot.
Install Ef Core
$ npx skills add github/awesome-copilot --skill ef-core -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install github/awesome-copilot ef-core --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/github/awesome-copilot.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/ef-core .claude/skills/ef-core && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "ef-core" agent skill from https://github.com/github/awesome-copilot/tree/main/skills/ef-core into .claude/skills/ef-core/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ef-core", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/github/awesome-copilot/tree/main/skills/ef-coreType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add github/awesome-copilot --skill ef-core -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install github/awesome-copilot ef-core --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/github/awesome-copilot.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/ef-core .agents/skills/ef-core && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "ef-core" agent skill from https://github.com/github/awesome-copilot/tree/main/skills/ef-core into .agents/skills/ef-core/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ef-core", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add github/awesome-copilot --skill ef-core -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install github/awesome-copilot ef-core --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/github/awesome-copilot.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/ef-core .cursor/skills/ef-core && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "ef-core" agent skill from https://github.com/github/awesome-copilot/tree/main/skills/ef-core into .cursor/skills/ef-core/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ef-core", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/github/awesome-copilot.git --path skills/ef-core--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add github/awesome-copilot --skill ef-core -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install github/awesome-copilot ef-core --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/github/awesome-copilot.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/ef-core .gemini/skills/ef-core && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "ef-core" agent skill from https://github.com/github/awesome-copilot/tree/main/skills/ef-core into .gemini/skills/ef-core/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ef-core", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install github/awesome-copilot ef-coreInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add github/awesome-copilot --skill ef-core -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/github/awesome-copilot.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/ef-core .github/skills/ef-core && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "ef-core" agent skill from https://github.com/github/awesome-copilot/tree/main/skills/ef-core into .github/skills/ef-core/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ef-core", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add github/awesome-copilot --skill ef-core -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install github/awesome-copilot ef-core --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/github/awesome-copilot.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/ef-core .opencode/skills/ef-core && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "ef-core" agent skill from https://github.com/github/awesome-copilot/tree/main/skills/ef-core into .opencode/skills/ef-core/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ef-core", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
ef-core- GitHub stars
- 40k
- Used in
- 1 other repo
- Token cost
- ~670 tokens
- SKILL.md length
- 323 words
- Files
- 1
- Skills in repo
- 417
- Repo updated
- First seen
- Licence
- MIT
At a glance
Get best practices for Entity Framework Core. An agent skill from github/awesome-copilot.
- Tasks that involve ORMs and data access
- SKILL.md covers Data Context Design, Entity Design, Performance and Migrations, plus 4 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Ef Core is an agent skill from github/awesome-copilot, published by the product's own GitHub organization. Get best practices for Entity Framework Core
Its SKILL.md is about 670 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Databases, covering ORMs and data access. It works with SQL. The repository describes itself as: Community-contributed instructions, agents, skills, and configurations to help you make the most of GitHub Copilot. The licence is MIT.
When your agent uses it
- Tasks that involve ORMs and data access
Example prompts
- “/ef-core”
What it can do on your machine
Read from SKILL.md and the folder at commit 727ff2e. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Ef Core loads about 670 tokens when it runs. Until then it costs about 13 tokens; SKILL.md has 323 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from github/awesome-copilot at commit 727ff2e, republished under its MIT licence (© github). 323 words, ~670 tokens.
Download SKILL.mdSave it as
.claude/skills/ef-core/SKILL.md (or your agent's skills folder).- name
- ef-core
- description
- Get best practices for Entity Framework Core
Entity Framework Core Best Practices
Your goal is to help me follow best practices when working with Entity Framework Core.
Data Context Design
- Keep DbContext classes focused and cohesive
- Use constructor injection for configuration options
- Override OnModelCreating for fluent API configuration
- Separate entity configurations using IEntityTypeConfiguration
- Consider using DbContextFactory pattern for console apps or tests
Entity Design
- Use meaningful primary keys (consider natural vs surrogate keys)
- Implement proper relationships (one-to-one, one-to-many, many-to-many)
- Use data annotations or fluent API for constraints and validations
- Implement appropriate navigational properties
- Consider using owned entity types for value objects
Performance
- Use AsNoTracking() for read-only queries
- Implement pagination for large result sets with Skip() and Take()
- Use Include() to eager load related entities when needed
- Consider projection (Select) to retrieve only required fields
- Use compiled queries for frequently executed queries
- Avoid N+1 query problems by properly including related data
Migrations
- Create small, focused migrations
- Name migrations descriptively
- Verify migration SQL scripts before applying to production
- Consider using migration bundles for deployment
- Add data seeding through migrations when appropriate
Querying
- Use IQueryable judiciously and understand when queries execute
- Prefer strongly-typed LINQ queries over raw SQL
- Use appropriate query operators (Where, OrderBy, GroupBy)
- Consider database functions for complex operations
- Implement specifications pattern for reusable queries
Change Tracking & Saving
- Use appropriate change tracking strategies
- Batch your SaveChanges() calls
- Implement concurrency control for multi-user scenarios
- Consider using transactions for multiple operations
- Use appropriate DbContext lifetimes (scoped for web apps)
Security
- Avoid SQL injection by using parameterized queries
- Implement appropriate data access permissions
- Be careful with raw SQL queries
- Consider data encryption for sensitive information
- Use migrations to manage database user permissions
Testing
- Use in-memory database provider for unit tests
- Create separate testing contexts with SQLite for integration tests
- Mock DbContext and DbSet for pure unit tests
- Test migrations in isolated environments
- Consider snapshot testing for model changes
When reviewing my EF Core code, identify issues and suggest improvements that follow these best practices.
© github, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in skills/ef-core of github/awesome-copilot.
Open the folder on GitHubat commit 727ff2e
Used in 1 other repository
We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in github/awesome-copilot, which our catalogue first saw on October 7, 2026.
Compare with similar skills
Ef Core next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Ef Core this skillgithub/awesome-copilot | 40k | 1 repos | ~670 | Automated safety check: Pass | MIT | |
| DB Migrationskurealnum/dotfiles | 290 | — | ~820 | Automated safety check: Pass | None | |
| Optimizing Ef Core Queriesdotnet/skills | 5.6k | 1 repos | ~2.7k | Automated safety check: Pass | MIT | |
| Query Buildertotvs/engpro-advpl-tlpp-skills | 141 | — | ~4.7k | Automated safety check: Pass | MIT | |
| Migrationkortix-ai/suna | 20k | — | ~1.2k | Automated safety check: Pass | Custom licence | |
| Frappe Core DatabaseImpertio-Studio/Frappe_Claude_Skill_Package | 187 | — | ~3.8k | Automated safety check: Pass | MIT |
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Related
Works with
Categories
Questions about Ef Core
What does Ef Core do?
Get best practices for Entity Framework Core. An agent skill from github/awesome-copilot. Ef Core is an agent skill from github/awesome-copilot, published by the product's own GitHub organization.
When should I use Ef Core?
Ef Core fits situations like: tasks that involve ORMs and data access.
How do I install Ef Core in Claude Code?
Run `npx skills add github/awesome-copilot --skill ef-core -a claude-code`. Or copy the skill folder (skills/ef-core in github/awesome-copilot) into .claude/skills/ef-core in your project. Claude Code loads it when a task matches its description.
How do I install Ef Core in Codex?
Run `npx skills add github/awesome-copilot --skill ef-core -a codex`. Or copy the skill folder (skills/ef-core in github/awesome-copilot) into .agents/skills/ef-core in your project. Codex loads it when a task matches its description.
Can I use Ef Core in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add github/awesome-copilot --skill ef-core -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/ef-core, .gemini/skills/ef-core, .github/skills/ef-core and .opencode/skills/ef-core in your project.
What does Ef Core need to run?
SKILL.md names no scripts, command-line tools or credentials: Ef Core is instructions for the agent only.
Does Ef Core access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Ef Core safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Ef Core use?
Ef Core is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Ef Core use?
About 670 tokens (SKILL.md is roughly 2.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Ef Core?
Skills that share tags, products or a category with Ef Core: DB Migrations (kurealnum/dotfiles, 290 stars), Optimizing Ef Core Queries (dotnet/skills, 5.6k stars), Query Builder (totvs/engpro-advpl-tlpp-skills, 141 stars) and Migration (kortix-ai/suna, 20k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Ef Core?
github (a GitHub organization, an official publisher) maintains it in github/awesome-copilot, which has 39,748 GitHub stars. The repository holds 417 skills in this directory. The repository was last updated on October 7, 2026.
Source: github/awesome-copilot on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.