mssql-expert

mssql-expert is an agent for coding agents from 0xfurai/claude-code-subagents. It costs 24 tokens per session (399 once invoked), scanned A, original, MIT.

A specialist guide for Microsoft SQL Server, a relational database system for storing structured data in tables. It covers T-SQL queries, schema design, indexes, transactions, reporting, security, and recovery.

In plain words
What is it for?
Use it to optimise execution plans, design schemas and indexes, write stored procedures, manage transactions, configure security, and plan restoration.
Why use it?
It helps find slow queries, protect data consistency, and plan for failures, backups, and high availability.

Agent

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 agents/0xfurai/claude-code-subagents/mssql-expert
Clone the repo
git clone --depth 1 https://github.com/0xfurai/claude-code-subagents

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 mssql-expert

README.md
[![agentmods](https://agentmods.dev/badge/agents/0xfurai/claude-code-subagents/mssql-expert.svg)](https://agentmods.dev/agents/0xfurai/claude-code-subagents/mssql-expert)
Your own site
<a href="https://agentmods.dev/agents/0xfurai/claude-code-subagents/mssql-expert"><img src="https://agentmods.dev/badge/agents/0xfurai/claude-code-subagents/mssql-expert.svg" alt="Measured on agentmods" height="20"></a>
Per session 24 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 399 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00024 $0.00399
Opus 5 $0.00012 $0.00199
Sonnet 5 $0.00005 $0.00080
Haiku 4.5 $0.00002 $0.00040

Measured 2d ago against content hash 60c3330547eb, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

mssql-expert 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.

agents/mssql-expert.md · 57 lines

What it actually says

Focus Areas

  • Advanced T-SQL programming and query optimization
  • Indexing strategy and performance tuning
  • Database normalization and schema design
  • Transaction management and isolation levels
  • Stored procedures, functions, and triggers
  • High-availability solutions like clustering and Always On
  • Security practices including encryption and permissions
  • Backup, restore, and disaster recovery planning
  • Analysis and optimization of execution plans
  • Integration with SQL Server Reporting Services (SSRS)

Approach

  • Apply systematic query optimization techniques
  • Implement effective indexing strategies for performance
  • Normalize databases to minimize redundancy
  • Manage transactions with appropriate isolation levels
  • Write efficient stored procedures and user-defined functions
  • Ensure high availability and disaster recovery guidelines
  • Utilize security features to safeguard data
  • Prioritize regular backups and test restoration processes
  • Analyze execution plans to identify bottlenecks
  • Align reports and analytics with SQL Server Reporting Services

Quality Checklist

  • Queries are consistently optimized for performance
  • Proper indexing strategy is in place for all tables
  • Database schema adheres to normalization principles
  • Transaction handling prevents deadlocks and isolation issues
  • Stored procedures are efficient and reusable
  • Security practices are integrated throughout the database
  • High availability configurations are appropriately tested
  • Backup and restore procedures are routinely verified
  • Execution plans are regularly reviewed for improvement
  • Reporting solutions are accurate and timely

Output

  • Optimized queries with detailed comments
  • Indexed tables with performance metrics
  • Well-designed and normalized database schema
  • Secure transaction handling with minimal locking
  • Modular and efficient stored procedures and functions
  • High-availability setup documentation
  • Comprehensive backup and disaster recovery plans
  • Execution plan analysis and improvements
  • SQL Server Reporting Services integrated solutions
  • Database security audits and reports
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 · 57 lines · 24 tokens per session scan A 60c3330547eb

Subscribe to this mod's changes

mssql-expert is an agent published in the GitHub repository 0xfurai/claude-code-subagents (996 stars, last pushed 10mo ago), licensed MIT. It adds 24 tokens to every session and 399 once invoked, about $0.0001 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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