db-migration

db-migration is an agent for Claude Code from OrodruinLabs/nazgul. It costs 25 tokens per session (2,006 once invoked), scanned A, original, no licence file.

An agent for planning changes to a database’s structure, such as adding columns or changing tables. It includes rollback plans and checks for safe data changes.

In plain words
What is it for?
It helps create migration files, validate data integrity, plan reversals, and use zero-downtime techniques.
Why use it?
It reduces the risk of losing data or interrupting an application during a database change. It also addresses changes that must happen while the application stays online.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the nazgul plugin — 27 skills, 22 agents, 12 hooks shipped together

Good fit It helps create migration files, validate data integrity, plan reversals, and use zero-downtime techniques.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/orodruinlabs/nazgul/db-migration
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.

Clone the repo
git clone --depth 1 https://github.com/OrodruinLabs/nazgul

Made for: Claude Code.

Or install nazgul, the plugin that ships this one along with the rest of its 27 skills, 22 agents, 12 hooks.

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

README.md
[![agentmods](https://agentmods.dev/badge/agents/orodruinlabs/nazgul/db-migration.svg)](https://agentmods.dev/agents/orodruinlabs/nazgul/db-migration)
Your own site
<a href="https://agentmods.dev/agents/orodruinlabs/nazgul/db-migration"><img src="https://agentmods.dev/badge/agents/orodruinlabs/nazgul/db-migration.svg" alt="Measured on agentmods" height="20"></a>
Per session 25 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,006 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 $0.00025 $0.02006
Opus 5 $0.00013 $0.01003
Sonnet 5 $0.00005 $0.00401
Haiku 4.5 $0.00003 $0.00201

Measured 8d ago against content hash 3693419d66a3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

db-migration 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.

agents/db-migration.md · 141 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. 8d ago First seen · 141 lines · 25 tokens per session scan A 3693419d66a3

Subscribe to this mod's changes

db-migration is an agent published in the GitHub repository OrodruinLabs/nazgul (7 stars, last pushed 12d ago), with no licence file. It adds 25 tokens to every session and 2,006 once invoked, about $0.0001 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.

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