db-migration-checker

db-migration-checker is a skill for Claude Code, Codex from zxpmail/ReqForge. It costs 0 tokens per session (60 once invoked), scanned A, original, MIT.

A tool that compares database migration scripts between environments and creates reports showing their differences.

In plain words
What is it for?
Use it to check whether migration files are consistent across development, testing, and production environments.
Why use it?
It helps find mismatches between database versions before they cause deployment or application problems.

Skill for Claude CodeCodex

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 skills/zxpmail/reqforge/db-migration-checker
Any agent
npx skills add zxpmail/ReqForge --skill db-migration-checker
Clone the repo
git clone --depth 1 https://github.com/zxpmail/ReqForge

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-migration-checker

README.md
[![agentmods](https://agentmods.dev/badge/skills/zxpmail/reqforge/db-migration-checker.svg)](https://agentmods.dev/skills/zxpmail/reqforge/db-migration-checker)
Your own site
<a href="https://agentmods.dev/skills/zxpmail/reqforge/db-migration-checker"><img src="https://agentmods.dev/badge/skills/zxpmail/reqforge/db-migration-checker.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 60 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 $0.00000 $0.00060
Opus 5 $0.00000 $0.00030
Sonnet 5 $0.00000 $0.00012
Haiku 4.5 $0.00000 $0.00006

Measured 4d ago against content hash 1d4e941ca67f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

db-migration-checker 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 4d 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.

eval-output/new-skill-created/skills/db-migration-checker/SKILL.md · 11 lines

What it actually says


name: db-migration-checker description: Compares database migration scripts across environments and generates diff reports. version: 1.0.0

[Task] [First Principles] [Gotchas] [Workflow]

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. 4d ago First seen · 11 lines · 0 tokens per session scan A 1d4e941ca67f

Subscribe to this mod's changes

db-migration-checker is a skill published in the GitHub repository zxpmail/ReqForge (18 stars, last pushed 14d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 60 tokens. 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 2026-08-30.

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