Borrowing it
Nothing to install: this file belongs to Mentor-Wizard/mentor-wizard-webapp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/Mentor-Wizard/mentor-wizard-webapp/develop/.claude/skills/database-optimizer/SKILL.mdgit clone --depth 1 https://github.com/Mentor-Wizard/mentor-wizard-webappWrote 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/skills/mentor-wizard/mentor-wizard-webapp/database-optimizer)<a href="https://agentmods.dev/skills/mentor-wizard/mentor-wizard-webapp/database-optimizer"><img src="https://agentmods.dev/badge/skills/mentor-wizard/mentor-wizard-webapp/database-optimizer/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.
<a href="https://agentmods.dev/skills/mentor-wizard/mentor-wizard-webapp/database-optimizer"><img src="https://agentmods.dev/badge/skills/mentor-wizard/mentor-wizard-webapp/database-optimizer.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.00102 | $0.00854 |
| Opus 5.5 | $0.00041 | $0.00342 |
| Sonnet 5.5 | $0.00020 | $0.00171 |
| Haiku 4.5 | $0.00010 | $0.00085 |
Grade A, and why
database-optimizer 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.
The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
What ships with it
5 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.
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.
- 1mo ago First seen · 115 lines · 102 tokens per session scan A 62ca691451e2
database-optimizer is a skill published in the GitHub repository Mentor-Wizard/mentor-wizard-webapp (10 stars, last pushed 3d ago), with no licence file. It adds 102 tokens to every session and 854 once invoked, about $0.0004 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 2026-09-04.
Other skills, from other repositories
mysql-patterns
Use when designing MySQL schema features or applying advanced MySQL patterns in Laravel — upserts, JSON columns, full-text search, partitioning, replication/read-write splitting, and deadlock handling — beyond the query tuning already in the SQL rules.
postgres-patterns
Use when designing PostgreSQL schema features or applying advanced Postgres patterns in Laravel — GIN/BRIN/partial/covering indexes, jsonb, ON CONFLICT upserts, SKIP LOCKED queue workers, cursor pagination, RLS, and timestamptz/numeric typing — beyond the query tuning already in the SQL rules.
redis-patterns
Use when using Redis in a Laravel app — caching strategies, atomic/distributed locks, rate limiting, stampede protection, pub/sub, pipelines, and key/TTL design beyond raw query tuning.
laravel-eloquent
Eloquent and query-layer engineering rules for Laravel — eliminating N+1, choosing a pagination strategy, short atomic transactions, casts and scopes on the model, where raw SQL is allowed, and how migrations declare the schema those queries depend on. Use when writing or reviewing Eloquent models, migrations, query…
Laravel Eloquent N+1 and Query Efficiency Review
Detects N+1 query patterns (relation access inside loops without eager loading), full-table get()/all() loads, and unsafe chunk()/cursor() usage in Laravel Eloquent code.
Laravel Migration Safety Review
Reviews Laravel migrations for destructive operations, change() dropping modifiers, locking index creation on large tables (PostgreSQL), and asymmetric down().