pgmigrator

A command-line tool for applying incremental schema changes to PostgreSQL databases. It records which SQL migrations have already been run in a database table.

In plain words
What is it for?
Installing and configuring pgmigrator, organising dated SQL migration files, and applying transactional or non-transactional PostgreSQL changes.
Why use it?
It keeps database changes ordered and prevents already-applied migrations from being run again. Configuration controls the migration location, filename format, database connection, and execution limits.

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/vmkteam/claude-plugins/pgmigrator
Any agent
npx skills add vmkteam/claude-plugins --skill pgmigrator
Clone the repo
git clone --depth 1 https://github.com/vmkteam/claude-plugins

Made for: Claude Code, Codex.

Per session 30 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,590 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 $0.00030 $0.01590
Opus 5 $0.00015 $0.00795
Sonnet 5 $0.00006 $0.00318
Haiku 4.5 $0.00003 $0.00159

Measured 2d ago against content hash 71fb995b9265, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

pgmigrator 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 2d 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.

plugins/developer/skills/pgmigrator/SKILL.md · 166 lines

How it starts

The opening of the file, as written. The whole thing — 166 lines — stays where its author put it; the contents beside it link to each section on GitHub.

pgmigrator — SQL миграции PostgreSQL

pgmigrator (https://github.com/vmkteam/pgmigrator) — CLI для инкрементальных миграций PostgreSQL. Отслеживает выполненные миграции в таблице public.pgMigrations.

Установка

brew tap vmkteam/tap
brew install pgmigrator
# или
make tools  # в проектах vmkteam

Docker: vmkteam/pgmigrator на Docker Hub.

Конфигурация

Обычно лежит рядом с миграциями, например docs/patches/pgmigrator.toml:

[App]
Table = "public.pgMigrations"
StatementTimeout = "5s"
FileMask = "\\d{4}-\\d{2}-\\d{2}-\\S+.sql"

[Database]
Addr = "localhost:5432"
User = "postgres"
Database = "dbname"
Password = "postgres"
PoolSize = 1
ApplicationName = "pgmigrator"

Расположение миграций

Типичная структура — docs/patches/:

docs/patches/
├── pgmigrator.toml
├── 2024/                                  # старые, по годам
├── 2025/
│   ├── 2025-01-14-dummy.sql
│   └── 2025-02-10-IX_orders-MANUAL.sql
├── 2026-01-29-rfmUsers.sql                # транзакционная
├── 2026-02-01-add-index-NONTR.sql         # нетранзакционная
└── 2026-02-03-add-partitions-MANUAL.sql   # ручная

Формат файлов

Имя: YYYY-MM-DD-<description>.sql. Применяются в алфавитном порядке.

Суффикс Поведение
.sql Транзакционная (BEGIN/COMMIT автоматически)
-NONTR.sql Без транзакции (для CREATE INDEX CONCURRENTLY)
-MANUAL.sql Игнорируется pgmigrator (ручное применение DBA)

MANUAL — для операций которые нельзя автоматизировать: партиции, тяжёлые индексы на больших таблицах, миграции с downtime.

Команды

Команда Описание
pgmigrator plan Показать миграции к применению
pgmigrator run Применить все новые
pgmigrator run 1 Применить N миграций
pgmigrator dryrun Тест с откатом
pgmigrator skip Пометить выполненными без запуска
pgmigrator last Последние применённые
pgmigrator verify Проверить целостность (MD5)
pgmigrator redo Перезапустить последнюю
pgmigrator init Создать пример конфига

Read the full file on GitHub · 166 lines

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. 2d ago First seen · 166 lines · 30 tokens per session scan A 71fb995b9265

Subscribe to this mod's changes

pgmigrator is a skill published in the GitHub repository vmkteam/claude-plugins (7 stars, last pushed 4mo ago), licensed MIT. It adds 30 tokens to every session and 1,590 once invoked, about $0.0002 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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