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.
npx agentmods add instructions/vanterx/mssql-performance-skills/agents-mdgit clone --depth 1 https://github.com/vanterx/mssql-performance-skillsWrote 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.
[](https://agentmods.dev/instructions/vanterx/mssql-performance-skills/agents-md)<a href="https://agentmods.dev/instructions/vanterx/mssql-performance-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/vanterx/mssql-performance-skills/agents-md.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00317 | $0.00317 |
| Opus 5 | $0.00159 | $0.00159 |
| Sonnet 5 | $0.00063 | $0.00063 |
| Haiku 4.5 | $0.00032 | $0.00032 |
Grade A, and why
mssql-performance-skills AGENTS.md 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 5d 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.
What it actually says
AGENTS.md — mssql-performance-skills
What this is
A library of Markdown skills for SQL Server performance tuning. No build system, no tests, no dependencies.
All skill details, check counts, prefix map, contributor workflows, and conventions — see CLAUDE.md.
Verify before commit
bash scripts/verify-docs.sh
Runs documentation consistency checks. Fails block commit; warnings are advisory.
A .claude/settings.json PostToolUse hook auto-runs this after every Write/Edit — check output after file edits.
Critical gotchas
Dollar signs in SKILL.md break at runtime. The Claude skill loader does shell variable expansion on SKILL.md content. Never write $0.012 or $[expr] — use USD 0.012. verify-docs.sh catches this.
references/check-explanations.md is NOT loaded at runtime by default. Only SKILL.md is read automatically by the skill loader. All thresholds and triggers must live in SKILL.md. The reference file is on-demand context — Claude may load it when a user asks "explain check X" or for deeper fix-option detail.
Dispatcher-style skills are exempt from check-count matching. Skills with no own checks have references/check-explanations.md files that describe methodology, not per-check entries.
Full contributor guide
CLAUDE.md — file map, conventions, all skills listed, install instructions, development constraints, and step-by-step workflows for adding checks and skills.
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.
- 5d ago First seen · 25 lines · 317 tokens per session scan A 6173cf8b8fe3
mssql-performance-skills AGENTS.md is an instructions file published in the GitHub repository vanterx/mssql-performance-skills (5 stars, last pushed 1mo ago), licensed MIT. It adds 317 tokens to every session, about $0.0016 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 2026-08-31.
Other instructions, from other repositories
sql-sentinel CLAUDE.md
Instructions for tkmawarire/sql-sentinel, covering claude.md, project overview, build commands, restore and build and run the server.
lms-front CLAUDE.md
Claude Code instructions for guillermoscript/lms-front, covering claude.md, project overview, commands, architecture and multi-tenancy.
vespertide AGENTS.md
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seekstone CLAUDE.md
Claude Code instructions for shaqmughal/seekstone, covering claude.md, what this repo is, commands, the harness itself (run after npm install) and architecture.
rails_ai_agents AGENTS.md
AGENTS.md instructions for ThibautBaissac/rails_ai_agents, covering project configuration, tech stack, architecture, key commands and tests.
pg-dash CLAUDE.md
Claude Code instructions for indiekitai/pg-dash, covering pg-dash claude.md, 项目结构, 构建与测试, 发版纪律（强制） and 发版检查清单（每次 npm publish 前必须按序执行）.