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datagsm-server: Skill for Claude Code

.agents/skills/migration-guide/SKILL.md

migration-guide is a skill for Claude Code, Codex from themoment-team/datagsm-server. It costs 42 tokens per session (233 once invoked), scanned A, original, MIT.

A guide for changing database schemas and application entities safely. An entity is the code representation of data stored in a database; the guide covers the related DTO, repository, service, and test changes.

In plain words
What is it for?
Use it to plan entity and column changes, update dependent code and tests, choose database schema settings, and stage column removal across two deployments.
Why use it?
It helps trace the impact of a data-model change, preserve existing data, and avoid unsafe production schema changes.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

This is themoment-team/datagsm-server's own configuration. It tells Claude Code and Codex how to work on datagsm-server itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything datagsm-server configures →

not rated 29repo yesterday A scan 42 tokens original MIT
View source ↗ themoment-team/datagsm-server
Reuse

Borrowing it

Nothing to install: this file belongs to themoment-team/datagsm-server. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/themoment-team/datagsm-server/master/.agents/skills/migration-guide/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/themoment-team/datagsm-server

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 migration-guide

README.md
[![agentmods](https://agentmods.dev/badge/skills/themoment-team/datagsm-server/migration-guide/github.svg)](https://agentmods.dev/skills/themoment-team/datagsm-server/migration-guide)
Your own site
<a href="https://agentmods.dev/skills/themoment-team/datagsm-server/migration-guide"><img src="https://agentmods.dev/badge/skills/themoment-team/datagsm-server/migration-guide/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for migration-guide

Your own site · 80×15
<a href="https://agentmods.dev/skills/themoment-team/datagsm-server/migration-guide"><img src="https://agentmods.dev/badge/skills/themoment-team/datagsm-server/migration-guide.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 42 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 233 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 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 5.1 $0.00042 $0.00233
Opus 5.5 $0.00017 $0.00093
Sonnet 5.5 $0.00008 $0.00047
Haiku 4.5 $0.00004 $0.00023

Measured 29d ago against content hash eaa955ef006e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

migration-guide 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 29d 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/skills/migration-guide/SKILL.md · 28 lines

What it actually says

DB Migration Guide

Entity Change Checklist

  • Analyzed impact on existing data
  • Determined need for migration script
  • Prepared test data
  • Planned rollback strategy

Change Order

  1. Modify Entity: locate domain directory with find . -type d -name "domain" -path "*/main/*" ! -path "*/build/*"
  2. Modify DTO: ReqDto, ResDto
  3. Modify Repository: Adjust QueryDSL queries if needed
  4. Modify Service: Update business logic
  5. Update Tests: Entity, Service tests

Important Notes

  • Use JPA DDL auto as validate or none
  • Production environment: Manual migration scripts
  • Column deletion: 2-phase deployment (Phase 1: Deprecate, Phase 2: Delete)
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. 29d ago First seen · 28 lines · 42 tokens per session scan A eaa955ef006e

Subscribe to this mod's changes

migration-guide is a skill published in the GitHub repository themoment-team/datagsm-server (29 stars, last pushed yesterday), licensed MIT. It adds 42 tokens to every session and 233 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-10-08.

Databaseskotlinmulti-modulemysqlredisspring-bootspring-data
Related

migration-guide compared with skills from other repositories

migration-guide next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
migration-guidethemoment-team/datagsm-serverSkill29yesterdayMITA42Claude Code, Codex
spring-ecosystem-docspledgeandgrow/pledge-skillsSkill103mo agoMITA43Claude Code, Codex
woocommerce-performancefinsilabs/awesome-ecommerce-skillsSkill6314d agoMITB26Claude Code, Codex
database-enumerationblacklanternsecurity/red-runSkill30214d agoAGPL-3.0A56Claude Code, Codex
tucache-cachingtri5m/tutu-cacheSkill484mo agoMITA43Claude Code, Codex
database-engineerbuiphucminhtam/forgewrightSkill495d agononeA45Claude Code
databasemiles990/claude-software-skillsSkill269mo agoMITA14Claude Code, Codex