database-migration

A workflow guide for changing a database's schema—the structure that defines its tables, fields, and relationships—using migration files. Migrations record database changes in a repeatable way.

In plain words
What is it for?
Use it when adding or changing database fields or tables, creating migration files, updating schema definitions, or regenerating types.
Why use it?
It encourages schema edits, migration files, and related type updates to be handled together and verified in a consistent order.

Command for Claude Code

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 commands/mit-network/everything-claude-code/database-migration
Clone the repo
git clone --depth 1 https://github.com/mit-network/everything-claude-code

Made for: Claude Code.

Per session 18 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 195 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod 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 $0.00018 $0.00195
Opus 5 $0.00009 $0.00097
Sonnet 5 $0.00004 $0.00039
Haiku 4.5 $0.00002 $0.00019

Measured yesterday against content hash d6dd0c4338f0, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

database-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 yesterday.

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.

Origin

This is a copy

100% identical to database-migration — 2 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.claude/commands/database-migration.md · 36 lines

What it actually says

/database-migration

Use this workflow when working on database-migration in everything-claude-code.

Goal

Database schema changes with migration files

Common Files

  • **/schema.*
  • migrations/*

Suggested Sequence

  1. Understand the current state and failure mode before editing.
  2. Make the smallest coherent change that satisfies the workflow goal.
  3. Run the most relevant verification for touched files.
  4. Summarize what changed and what still needs review.

Typical Commit Signals

  • Create migration file
  • Update schema definitions
  • Generate/update types

Notes

  • Treat this as a scaffold, not a hard-coded script.
  • Update the command if the workflow evolves materially.
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. yesterday First seen · 36 lines · 18 tokens per session scan A d6dd0c4338f0

Subscribe to this mod's changes

database-migration is a command published in the GitHub repository mit-network/everything-claude-code (76 stars, last pushed 5mo ago), licensed MIT. It adds 18 tokens to every session and 195 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to database-migration, differing in 2 lines, and is treated as a copy.