SQL Pro
Jeffallan/claude-skills
Optimizes SQL queries and designs schemas using CTEs, window functions, covering indexes and EXPLAIN ANALYZE, with notes on dialect differences between major databases.
Write, optimize, and debug T-SQL queries for Microsoft SQL Server.
Install SQL Expert
$ npx skills add aiskillstore/marketplace --skill sql-expert -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install aiskillstore/marketplace sql-expert --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/aiskillstore/marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/hmohamed01/sql-expert .claude/skills/sql-expert && 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 "sql-expert" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/hmohamed01/sql-expert into .claude/skills/sql-expert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sql-expert", 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/aiskillstore/marketplace/tree/main/skills/hmohamed01/sql-expertType 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 aiskillstore/marketplace --skill sql-expert -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install aiskillstore/marketplace sql-expert --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/hmohamed01/sql-expert .agents/skills/sql-expert && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "sql-expert" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/hmohamed01/sql-expert into .agents/skills/sql-expert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sql-expert", 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 aiskillstore/marketplace --skill sql-expert -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install aiskillstore/marketplace sql-expert --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/hmohamed01/sql-expert .cursor/skills/sql-expert && 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 "sql-expert" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/hmohamed01/sql-expert into .cursor/skills/sql-expert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sql-expert", 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/aiskillstore/marketplace.git --path skills/hmohamed01/sql-expert--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 aiskillstore/marketplace --skill sql-expert -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install aiskillstore/marketplace sql-expert --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/hmohamed01/sql-expert .gemini/skills/sql-expert && 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 "sql-expert" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/hmohamed01/sql-expert into .gemini/skills/sql-expert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sql-expert", 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 aiskillstore/marketplace sql-expertInstalls 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 aiskillstore/marketplace --skill sql-expert -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/hmohamed01/sql-expert .github/skills/sql-expert && 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 "sql-expert" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/hmohamed01/sql-expert into .github/skills/sql-expert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sql-expert", 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 aiskillstore/marketplace --skill sql-expert -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install aiskillstore/marketplace sql-expert --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/hmohamed01/sql-expert .opencode/skills/sql-expert && 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 "sql-expert" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/hmohamed01/sql-expert into .opencode/skills/sql-expert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sql-expert", 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
sql-expert- GitHub stars
- 430
- Token cost
- ~720 tokens
- SKILL.md length
- 204 words
- Files
- 8 (incl. references)
- Skills in repo
- 1,108
- Repo updated
- First seen
- Licence
- None found
At a glance
Write, optimize, and debug T-SQL queries for Microsoft SQL Server.
- Works in 6 steps: Gather context first - Ask about table… → Write for performance - Produce queries… → Explain reasoning - Describe why a… → …
- Working with SQL Server
- SKILL.md covers Instructions, Core Capabilities, Quick Reference and Additional References
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
SQL Expert is an agent skill from aiskillstore/marketplace. Write, optimize, and debug T-SQL queries for Microsoft SQL Server. Covers CTEs, window functions, PIVOT, MERGE, APPLY operators, execution plan analysis, indexing strategies, and stored procedures. Use when working with SQL Server, T-SQL scripts, .sql files, stored procedures, query optimization, or database performance tuning.
Its SKILL.md is about 720 tokens, which your agent loads only when the skill is triggered. The skill folder holds 8 other files, including reference files (for example `evaluation.json`, `references/data-types.md` and `references/patterns.md`).
It sits in Databases, covering SQL and Query optimization. It works with SQL and Microsoft SQL Server. The repository describes itself as: Security-audited skills for Claude, Codex & Claude Code. One-click install, quality verified.
When your agent uses it
- Working with SQL Server
- Stored procedures
- Query optimization
- Database performance tuning
Example prompts
- “/sql-expert”
Workflow steps
6 steps, taken from the first numbered list in SKILL.md.
- Gather context first - Ask about table structures, relationships, data volumes, and SQL Server version if not provided
- Write for performance - Produce queries that scale, avoiding anti-patterns from the start
- Explain reasoning - Describe why a technique was chosen, not just how it works
- Present alternatives - When multiple approaches exist, explain trade-offs
- Handle edge cases - Consider NULLs, empty result sets, and boundary conditions
- Note version requirements - Flag features that require specific SQL Server versions
What it can do on your machine
Read from SKILL.md and the folder at commit ad8daf7. 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 (its code samples are sql).
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
SQL Expert loads about 720 tokens when it runs, and up to ~13k if it reads all its reference files. Until then it costs about 85 tokens; SKILL.md has 204 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
Without a licence we can't republish the file, so here is its outline and opening line. It has 204 words (~720 tokens).
“Expert assistance for Microsoft SQL Server and T-SQL development.”
- name
- sql-expert
Files
SKILL.md and 7 other files (references) in skills/hmohamed01/sql-expert of aiskillstore/marketplace.
- SKILL.md
- evaluation.json
- references/data-types.md
- references/patterns.md
- references/performance.md
- references/security.md
- references/transactions.md
- skill-report.json
Open the folder on GitHubat commit ad8daf7
Compare with similar skills
SQL Expert 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 |
|---|---|---|---|---|---|---|
| SQL Expert this skillaiskillstore/marketplace | 430 | — | ~720 | Automated safety check: Pass | None | |
| SQL ProJeffallan/claude-skills | 12k | — | ~1.3k | Automated safety check: Pass | MIT | |
| SQL Optimizationgithub/awesome-copilot | 40k | 2 repos | ~2.3k | Automated safety check: Pass | MIT | |
| Optimizing SQLancoleman/ai-design-components | 526 | — | ~3k | Automated safety check: Pass | MIT | |
| Agent SQL Proxiaoyuge886/aigc | 198 | — | ~315 | Automated safety check: Pass | MIT | |
| SQL Optimizationtotvs/engpro-advpl-tlpp-skills | 143 | — | ~1.2k | Automated safety check: Pass | MIT |
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Questions about SQL Expert
What does SQL Expert do?
Write, optimize, and debug T-SQL queries for Microsoft SQL Server. SQL Expert is an agent skill from aiskillstore/marketplace. Write, optimize, and debug T-SQL queries for Microsoft SQL Server.
When should I use SQL Expert?
SQL Expert fits situations like: working with SQL Server; stored procedures; query optimization; database performance tuning.
How do I install SQL Expert in Claude Code?
Run `npx skills add aiskillstore/marketplace --skill sql-expert -a claude-code`. Or copy the skill folder (skills/hmohamed01/sql-expert in aiskillstore/marketplace) into .claude/skills/sql-expert in your project. Claude Code loads it when a task matches its description.
How do I install SQL Expert in Codex?
Run `npx skills add aiskillstore/marketplace --skill sql-expert -a codex`. Or copy the skill folder (skills/hmohamed01/sql-expert in aiskillstore/marketplace) into .agents/skills/sql-expert in your project. Codex loads it when a task matches its description.
Can I use SQL Expert 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 aiskillstore/marketplace --skill sql-expert -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/sql-expert, .gemini/skills/sql-expert, .github/skills/sql-expert and .opencode/skills/sql-expert in your project.
What does SQL Expert need to run?
SKILL.md names no scripts, command-line tools or credentials: SQL Expert is instructions for the agent only.
Does SQL Expert 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 SQL Expert 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 SQL Expert use?
No licence was found for SQL Expert or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does SQL Expert use?
About 720 tokens (SKILL.md is roughly 2.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 12k tokens, read only when the agent opens those files.
What are the alternatives to SQL Expert?
Skills that share tags, products or a category with SQL Expert: SQL Pro (Jeffallan/claude-skills, 12k stars), SQL Optimization (github/awesome-copilot, 40k stars), Optimizing SQL (ancoleman/ai-design-components, 526 stars) and Agent SQL Pro (xiaoyuge886/aigc, 198 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains SQL Expert?
aiskillstore (a GitHub organization) maintains it in aiskillstore/marketplace, which has 430 GitHub stars. The repository holds 1,108 skills in this directory. The repository was last updated on October 7, 2026.
Source: aiskillstore/marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.