yq-db-design

yq-db-design is a skill for Claude Code, Codex from rockyflux/yq-workflow. It costs 30 tokens per session (681 once invoked), scanned A, original, MIT.

A database design guide for turning business concepts into tables, relationships, rules, indexes, and migration plans. It also considers how data is read, changed, retained, and removed.

In plain words
What is it for?
Use it to design schemas, choose keys and indexes, define constraints, plan migrations, support old data during changes, and set retention or audit rules.
Why use it?
It prevents databases from being shaped only around current code, which can cause slow queries, inconsistent data, risky changes, and difficult rollbacks.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to design schemas, choose keys and indexes, define constraints, plan migrations, support old data during changes, and set retention or audit rules.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/rockyflux/yq-workflow/yq-db-design
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 rockyflux/yq-workflow --skill yq-db-design
Clone the repo
git clone --depth 1 https://github.com/rockyflux/yq-workflow

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 yq-db-design

README.md
[![agentmods](https://agentmods.dev/badge/skills/rockyflux/yq-workflow/yq-db-design/github.svg)](https://agentmods.dev/skills/rockyflux/yq-workflow/yq-db-design)
Your own site
<a href="https://agentmods.dev/skills/rockyflux/yq-workflow/yq-db-design"><img src="https://agentmods.dev/badge/skills/rockyflux/yq-workflow/yq-db-design/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 yq-db-design

Your own site · 80×15
<a href="https://agentmods.dev/skills/rockyflux/yq-workflow/yq-db-design"><img src="https://agentmods.dev/badge/skills/rockyflux/yq-workflow/yq-db-design.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 30 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 681 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.
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 $0.00030 $0.00681
Opus 5 $0.00015 $0.00341
Sonnet 5 $0.00006 $0.00136
Haiku 4.5 $0.00003 $0.00068

Measured 8d ago against content hash 7adf1ee3cfc1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

yq-db-design 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 8d 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.

templates/yq-skills/yq-db-design/SKILL.md · 91 lines

What it actually says

YQ Database Design

Overview

为业务能力设计可落地的数据模型,覆盖实体关系、约束、索引、迁移和数据演进风险。

Core principle: 先定义数据边界和生命周期,再写持久化代码。

When to Use

  • 需要新增表、字段、索引或迁移方案
  • 需要把领域模型转成数据库结构
  • 需要考虑查询性能、一致性、保留策略或审计要求
  • 需要评估 schema 变更对现网和回滚的影响

Route Elsewhere

  • 需求和业务范围还不清楚:转 yq-req-analysis
  • 主要是接口契约:转 yq-api-design
  • 主要是实现 Repository 或 SQL:转 yq-code-gen
  • 主要是性能排查:转 yq-performance-opt

Process

  1. 提炼实体、关系、主键和业务约束。
  2. 设计表结构、索引和唯一性规则。
  3. 明确写入路径、读取模式和一致性要求。
  4. 规划迁移、回滚、历史数据兼容和清理策略。
  5. 标出性能、容量和演进风险。

Output

# Database Design
## Scope
## Entities and Relationships
## Schema Proposal
## Index and Constraint Plan
## Migration and Rollback Notes
## Data Lifecycle and Retention
## Risks and Trade-offs
## Recommended Next Step
  • 上游通常来自 yq-system-design
  • 下游通常接 yq-code-genyq-test-gen
  • 数据性能问题可继续接 yq-performance-opt
  • 默认交给 yq-code-gen,把 schema、索引和迁移方案落成实现
  • 如果需要先保护数据读写行为,可先补 yq-test-gen
  • 如果当前焦点已经转到查询瓶颈或索引收益,改走 yq-performance-opt

Common Mistakes

  • 按代码结构建表,而不是按业务约束建模
  • 缺少迁移和回滚说明
  • 只考虑写入,不考虑查询和生命周期
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. 8d ago First seen · 91 lines · 30 tokens per session scan A 7adf1ee3cfc1

Subscribe to this mod's changes

yq-db-design is a skill published in the GitHub repository rockyflux/yq-workflow (2 stars, last pushed yesterday), licensed MIT. It adds 30 tokens to every session and 681 once invoked, about $0.0002 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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