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db-change

Use for database schema/model/query changes AND new entity/relation/document modeling — SQL, NoSQL, ORM, indexes, constraints, data safety.

Skill by mtvrkan

IndexedMIT★ 10
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Install

Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install skill/mtvrkan-db-change

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

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About

Use for database schema/model/query changes AND new entity/relation/document modeling — SQL, NoSQL, ORM, indexes, constraints, data safety. Once a migration file exists, hand off to migration-review.

Use cases: documents, backend, data

Reviews

Write a review

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Permissions

What this skill can do and what it asks for, from its SKILL.md and code. Checked Oct 25, 2026.

Tools
No tools found
Secrets
None asked for
Install scripts
None found

Network hosts it talks to 1

  • codeload.github.com · found in install command

Files it touches

  • ~/.claude/skills/db-change

Tools it pre-approves 4

From allowed-tools in SKILL.md: the agent may use these without asking you each time.

  • Read,
  • Grep,
  • Glob,
  • Bash

What's inside

Skill name
db-change
Description
Use for database schema/model/query changes AND new entity/relation/document modeling — SQL, NoSQL, ORM, indexes, constraints, data safety. Once a migration file exists, hand off to migration-review.
License
MIT
Allowed tools
Read,, Grep,, Glob,, Bash
Instructions
25 lines in SKILL.md · view on GitHub

Before installing

  • Pre-approves any shell command

Files (1)

  • SKILL.md

SKILL.md (first lines)

# db-change

Greenfield modeling (no schema exists yet) — produce a data model plan first, no code edits:

```text
ENTITIES: [list] | RELATIONS: [A has-many B, …] | INDEXES: [field → reason]
CONSTRAINTS: [unique, not-null, FK, check] | SQL vs NoSQL: [rationale if a choice is needed]
ANTI-PATTERNS AVOIDED: [what was rejected and why]
```

Changing an existing schema — produce this analysis before any change:

1. AFFECTED: tables / collections / models touched
2. DATA LOSS RISK: DROP, rename, type narrowing, NOT NULL on existing rows
3. STRATEGY: additive change (nullable column, new table) or multi-step migration
4. MIGRATION ORDER: deploy order relative to code changes
5. INDEX/CONSTRAINT IMPACT: new indexes, constraint changes, performance effect
6. RACE/TRANSACTION RISK: concurrent write safety
7. TESTS REQUIRED: what must be verified before applying

No code edits in this skill — it plans; implementation waits for approval. Prefer additive changes. Never approve destructive operations without explicit user confirmation.

Deep references: `${CLAUDE_PLUGIN_ROOT}/agent_docs/zero-downtime-migration.md` — expand/contract phases and deploy ordering; `${CLAUDE_PLUGIN_ROOT}/agent_docs/architecture.md` — where models and repositories live.

From mtvrkan/senior-dev-kit, MIT.

More from mtvrkan/senior-dev-kit

Signals

Stars
10
Forks
0
Open issues
0
Last commit (this folder)
Oct 5, 2026 (23 days ago)

From GitHub (fetched Oct 24, 2026).

Details

License
MIT
Repository
github.com/mtvrkan/senior-dev-kit
Website
senior.mtvrkan.com/
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Source
GitHubgithub-graphql

More from mtvrkan

Cite this page

db-change skill. Agent Mart. https://agentmart.dev/skills/mtvrkan-db-change (last updated 2026-10-24)