sql-server

sql-server is a skill for Claude Code, Codex from jnPiyush/AgentX. It costs 49 tokens per session (1,286 once invoked), scanned A, original, Apache-2.0.

A guide to developing Microsoft SQL Server databases with T-SQL, the language used to query and manage SQL Server data. It covers stored procedures, indexes, query plans, and performance work.

In plain words
What is it for?
Use it to write queries and stored procedures, design indexes, use window functions and common table expressions, and troubleshoot SQL Server performance.
Why use it?
It helps you choose suitable SQL Server patterns and investigate slow queries or missing indexes. It also supports safer data changes and database-side business logic.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions AGENTS.md.

Good fit Use it to write queries and stored procedures, design indexes, use window functions and common table expressions, and troubleshoot SQL Server performance.

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Install with agentmods
npx agentmods add skills/jnpiyush/agentx/sql-server
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.

Any agent
npx skills add jnPiyush/AgentX --skill sql-server
Clone the repo
git clone --depth 1 https://github.com/jnPiyush/AgentX

Made for: Claude Code, Codex.

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 sql-server

README.md
[![agentmods](https://agentmods.dev/badge/skills/jnpiyush/agentx/sql-server/github.svg)](https://agentmods.dev/skills/jnpiyush/agentx/sql-server)
Your own site
<a href="https://agentmods.dev/skills/jnpiyush/agentx/sql-server"><img src="https://agentmods.dev/badge/skills/jnpiyush/agentx/sql-server/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for sql-server

Your own site · 80×15
<a href="https://agentmods.dev/skills/jnpiyush/agentx/sql-server"><img src="https://agentmods.dev/badge/skills/jnpiyush/agentx/sql-server.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 49 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,286 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original 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 $0.00049 $0.01286
Opus 5.5 $0.00020 $0.00514
Sonnet 5.5 $0.00010 $0.00257
Haiku 4.5 $0.00005 $0.00129

Measured 1mo ago against content hash e3531d0c4046, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

sql-server 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 1mo 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.

.github/skills/languages/sql-server/SKILL.md · 128 lines

How it starts

The opening of the file, as written. The whole thing — 128 lines — stays where its author put it; the contents beside it link to each section on GitHub.

SQL Server Database Development

Purpose: Production-ready SQL Server development for enterprise applications. Audience: Backend engineers and database administrators working with Microsoft SQL Server. Standard: Follows github/awesome-copilot SQL Server patterns.


When to Use This Skill

  • Writing T-SQL queries and stored procedures
  • Designing SQL Server index strategies
  • Optimizing query execution plans
  • Using window functions and CTEs
  • Troubleshooting SQL Server performance issues

Decision Tree

SQL Server Decision
+-- Writing a data access query?
|   +-- Simple CRUD? -> Parameterized inline SQL or stored procedure
|   +-- Complex business logic? -> Stored procedure with TRY...CATCH
|   +-- Reporting / analytics? -> CTEs + window functions
+-- Performance problem?
|   +-- Slow query? -> Check execution plan for table scans
|   +-- Missing indexes? -> Add nonclustered indexes on filter/join columns
|   +-- Parameter sniffing? -> OPTION (RECOMPILE) or local variables
+-- Data modification?
|   +-- Upsert needed? -> MERGE statement
|   +-- Bulk insert? -> BULK INSERT or SqlBulkCopy
|   +-- Audit trail? -> Temporal tables (system-versioned)
+-- Concurrency issues?
|   +-- Deadlocks? -> Consistent table access order + short transactions
|   +-- Read consistency? -> SNAPSHOT isolation level

Prerequisites

  • SQL Server 2019+ or Azure SQL Database
  • SSMS, Azure Data Studio, or DBeaver client

Quick Reference

Need Solution Pattern
Stored procedure CREATE PROCEDURE CREATE PROCEDURE GetUser @UserId INT AS BEGIN ... END
Transaction BEGIN/COMMIT/ROLLBACK BEGIN TRANSACTION; ... COMMIT;
Error handling TRY...CATCH BEGIN TRY ... END TRY BEGIN CATCH ... END CATCH
Indexing CREATE INDEX CREATE NONCLUSTERED INDEX ON Users(Email)
Query optimization Execution plan SET STATISTICS IO ON; SET STATISTICS TIME ON;
Upsert MERGE statement MERGE INTO target USING source ON ...

Read the full file on GitHub · 128 lines

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 1mo ago Changed e3531d0c4046
  2. 1mo ago First seen · 128 lines · 49 tokens per session scan A abee7a8c69cd

Subscribe to this mod's changes

sql-server is a skill published in the GitHub repository jnPiyush/AgentX (16 stars, last pushed 3d ago), licensed Apache-2.0. It adds 49 tokens to every session and 1,286 once invoked, about $0.0002 per session on Opus 5.5. 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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