mcp-cs: Skill for Claude Code

.agents/skills/db-architect/SKILL.md

db-architect is a skill for Claude Code, Codex from ieeecsopen/mcp-cs. It costs 114 tokens per session (941 once invoked), scanned A, original, no licence file.

A database-design skill for relational schemas, SQL table definitions, and Mermaid entity-relationship diagrams. A relational database stores data in linked tables, and an ERD shows those tables and their relationships.

In plain words
What is it for?
It is for reading SQL DDL, modelling tables, generating Mermaid ERDs, examining primary and foreign keys, and normalising schemas.
Why use it?
It helps reveal how tables connect and identify design issues such as duplicated data or unclear key relationships.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing. Also seen: installed under .agents/ (shared by several agents).

This is ieeecsopen/mcp-cs's own configuration. It tells Claude Code and Codex how to work on mcp-cs itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything mcp-cs configures →

Reuse

Borrowing it

Nothing to install: this file belongs to ieeecsopen/mcp-cs. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/ieeecsopen/mcp-cs/main/.agents/skills/db-architect/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/ieeecsopen/mcp-cs

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 db-architect

README.md
[![agentmods](https://agentmods.dev/badge/skills/ieeecsopen/mcp-cs/db-architect.svg)](https://agentmods.dev/skills/ieeecsopen/mcp-cs/db-architect)
Your own site
<a href="https://agentmods.dev/skills/ieeecsopen/mcp-cs/db-architect"><img src="https://agentmods.dev/badge/skills/ieeecsopen/mcp-cs/db-architect.svg" alt="Measured on agentmods" height="20"></a>
Per session 114 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 941 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 unknown 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 $0.00114 $0.00941
Opus 5 $0.00057 $0.00470
Sonnet 5 $0.00023 $0.00188
Haiku 4.5 $0.00011 $0.00094

Measured 7d ago against content hash 45f086b173cb, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

db-architect 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 7d 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/skills/db-architect/SKILL.md · 80 lines

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.

Read it on GitHub

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. 7d ago First seen · 80 lines · 114 tokens per session scan A 45f086b173cb

Subscribe to this mod's changes

db-architect is a skill published in the GitHub repository ieeecsopen/mcp-cs (3 stars, last pushed 4d ago), with no licence file. It adds 114 tokens to every session and 941 once invoked, about $0.0006 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.