database-migrate

database-migrate is a skill for Claude Code, Codex from stbenjam/skillsaw. It costs 18 tokens per session (348 once invoked), scanned A, original, Apache-2.0.

A workflow for creating and applying database migration scripts when a database schema changes. A migration is a tracked set of database changes, such as adding a table or column.

In plain words
What is it for?
Use it with Alembic, Knex, or Goose projects to generate migrations, inspect them, and update the target database.
Why use it?
It identifies the project's migration tool, shows the generated SQL, checks for risky changes, and applies the migration after review.

Skill for Claude CodeCodex

Part of the skillsaw plugin — 34 skills, 1 hook, 5 plugins shipped together

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/stbenjam/skillsaw/database-migrate
Any agent
npx skills add stbenjam/skillsaw --skill database-migrate
Clone the repo
git clone --depth 1 https://github.com/stbenjam/skillsaw

Made for: Claude Code, Codex.

Or install skillsaw, the plugin that ships this one along with the rest of its 34 skills, 1 hook, 5 plugins.

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 database-migrate

README.md
[![agentmods](https://agentmods.dev/badge/skills/stbenjam/skillsaw/database-migrate.svg)](https://agentmods.dev/skills/stbenjam/skillsaw/database-migrate)
Your own site
<a href="https://agentmods.dev/skills/stbenjam/skillsaw/database-migrate"><img src="https://agentmods.dev/badge/skills/stbenjam/skillsaw/database-migrate.svg" alt="Measured on agentmods" height="20"></a>
Per session 18 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 348 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 $0.00018 $0.00348
Opus 5 $0.00009 $0.00174
Sonnet 5 $0.00004 $0.00070
Haiku 4.5 $0.00002 $0.00035

Measured 4d ago against content hash 2832f2da6698, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

database-migrate 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.

tests/fixtures/agentskills/clean/database-migrate/SKILL.md · 50 lines

What it actually says

Database Migrate

Generate and apply database migration scripts from schema changes.

When to Use This Skill

Use when the user modifies database models and needs to create a migration, or when applying pending migrations to an environment.

Implementation Steps

Step 1: Detect Migration Tool

Check the project for migration tooling:

  1. alembic.ini → Alembic (Python / SQLAlchemy)
  2. knexfile.js → Knex (Node.js)
  3. dbconfig.yml → Goose (Go)

Step 2: Generate Migration

Create a new migration file from the current model diff:

  • Alembic: alembic revision --autogenerate -m "$DESCRIPTION"
  • Knex: npx knex migrate:make $DESCRIPTION
  • Goose: goose create $DESCRIPTION sql

Step 3: Review the Migration

Display the generated SQL and ask the user to confirm:

  • Check for destructive operations (DROP TABLE, DROP COLUMN)
  • Verify index additions won't lock large tables
  • Confirm data backfill steps are idempotent

Step 4: Apply

Run the migration against the target database:

  • Alembic: alembic upgrade head
  • Knex: npx knex migrate:latest
  • Goose: goose up

Report the migration version and any errors.

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 · 50 lines · 18 tokens per session scan A 2832f2da6698

Subscribe to this mod's changes

database-migrate is a skill published in the GitHub repository stbenjam/skillsaw (59 stars, last pushed 4d ago), licensed Apache-2.0. It adds 18 tokens to every session and 348 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 2026-08-30.

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