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Agent skill

Database Migration Review

by rohitg00 in rohitg00/ai-engineering-from-scratch

Reviews database migration files before merge, collecting forward, rollback, locking and data-safety evidence, with a decision that is blocked whenever evidence is missing.

MITAuto-check passedDatabases

Install Database Migration Review

skills CLI
$ npx skills add rohitg00/ai-engineering-from-scratch --skill migration-review -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install rohitg00/ai-engineering-from-scratch migration-review --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/rohitg00/ai-engineering-from-scratch.git skills-src && mkdir -p .claude/skills && cp -r skills-src/certifications/claude/lessons/19-claude-code-memory-rules-skills-and-ci/outputs/migration-review-skill .claude/skills/migration-review && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
migration-review
GitHub stars
66k
Token cost
~315 tokens
SKILL.md length
113 words
Files
3 (incl. scripts, references)
Skills in repo
16
Repo updated
First seen
Licence
MIT

At a glance

Reviews database migration files before merge, collecting forward, rollback, locking and data-safety evidence, with a decision that is blocked whenever evidence is missing.

  • Works in 5 steps: Run python3… → Stop if the checker rejects any path… → Read references/review-checklist.md. → …
  • Reviewing a PR that adds or changes files under migrations/
  • Runs Python scripts from its folder; calls python3
  • Checking rollback and locking risk before merging a schema change

What it does

The agent reviews only the migration files named in the arguments, plus the code needed to check their compatibility, and never applies a migration. It first runs `scripts/check_scope.py` and stops if the checker rejects any path outside `migrations/`. Then it reads `references/review-checklist.md` and inspects each accepted file and its schema assumptions.

The report covers forward behavior, rollback limits, lock risk, data-volume risk, verification evidence and unresolved blockers, under the headings Scope, Evidence, Risks, Rollback, Blockers and Decision. The decision is blocked whenever required evidence is missing. The skill's allowed-tools entry pre-approves only the scope checker command for that turn and does not remove other tools or project permission rules.

When your agent uses it

  • Reviewing a PR that adds or changes files under migrations/
  • Checking rollback and locking risk before merging a schema change
  • Collecting evidence that a data migration is safe at production data volumes

Example prompts

  • “Review the new migration in migrations/ for lock risk and rollback limits.”
  • “Is this schema migration safe to merge? Collect forward, rollback and data-safety evidence.”
  • “Check that my migration changes only touch the migrations folder and report any blockers.”

Requirements

  • Python 3 to run `scripts/check_scope.py`
  • Pre-approved tools (allowed-tools): Read, Grep, Glob, Bash(python3 ${CLAUDE_SKILL_DIR}/scripts/check_scope.py *)

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

  1. Run python3 ${CLAUDE_SKILL_DIR}/scripts/check_scope.py $ARGUMENTS.
  2. Stop if the checker rejects any path outside migrations/.
  3. Read references/review-checklist.md.
  4. Inspect each accepted file and its schema assumptions.
  5. Report forward behavior, rollback limits, lock risk, data-volume risk,

What it can do on your machine

Read from SKILL.md and the folder at commit cdfd9df. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves these tools, so the agent can use them without asking each time:

    • Read
    • Grep
    • Glob
    • Bash(python3 ${CLAUDE_SKILL_DIR}/scripts/check_scope.py *)

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Ships 1 file in scripts/ (Python), which the agent can run.

    Shell commands in SKILL.md call:

    • python3

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Database Migration Review loads about 315 tokens when it runs, and up to ~472 if it reads all its reference files. Until then it costs about 47 tokens; SKILL.md has 113 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~47
When it runs · the whole SKILL.md, loaded when a task matches
~315
With references · SKILL.md plus every file in references/, read only if the agent opens them
~472

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

The full file from rohitg00/ai-engineering-from-scratch at commit cdfd9df, republished under its MIT licence (© rohitg00). 113 words, ~315 tokens.

Download SKILL.mdSave it as .claude/skills/migration-review/SKILL.md (or your agent's skills folder). This skill also uses 2 other files; get the full folder from GitHub.
name
migration-review
description
Review database migration files when a change adds or modifies paths under migrations/. Use it before merge to collect forward, rollback, locking, and data-safety evidence.
allowed-tools
Read, Grep, Glob, Bash(python3 ${CLAUDE_SKILL_DIR}/scripts/check_scope.py *)

Migration Review

Review only the migration files named in $ARGUMENTS and the code needed to verify their compatibility. This Skill does not authorize applying a migration.

  1. Run python3 ${CLAUDE_SKILL_DIR}/scripts/check_scope.py $ARGUMENTS.
  2. Stop if the checker rejects any path outside migrations/.
  3. Read references/review-checklist.md.
  4. Inspect each accepted file and its schema assumptions.
  5. Report forward behavior, rollback limits, lock risk, data-volume risk, verification evidence, and unresolved blockers.

Return these headings: Scope, Evidence, Risks, Rollback, Blockers, and Decision. Use Decision: blocked whenever required evidence is missing.

The bundled checker is scripts/check_scope.py. The allowed-tools entry pre-approves only that command for the invocation turn; it does not remove other tools or replace project permission rules.

© rohitg00, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 2 other files (scripts, references) in certifications/claude/lessons/19-claude-code-memory-rules-skills-and-ci/outputs/migration-review-skill of rohitg00/ai-engineering-from-scratch.

  • SKILL.md
  • references/review-checklist.md
  • scripts/check_scope.py

Open the folder on GitHubat commit cdfd9df

Compare with similar skills

Database Migration Review next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Database Migration Review compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Database Migration Review this skillrohitg00/ai-engineering-from-scratch66k—~315Automated safety check: PassMIT
Openwrt Package UpdateNethServer/nethsecurity191—~841Automated safety check: PassCustom licence
Oraclecloud Schema Migrationjeremylongshore/tons-of-skills-marketplace2.8k—~2.7kAutomated safety check: PassMIT
Saleor Django Migration Rulessaleor/saleor23k—~1.6kAutomated safety check: PassBSD-3-Clause
Python Database Patternsaiskillstore/marketplace4301 repos~1.2kAutomated safety check: NotesNone
Mastering Python SkillSpillwaveSolutions/agent-brain119—~1.4kAutomated safety check: NotesMIT

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Works with

Categories

Questions about Database Migration Review

What does Database Migration Review do?

Reviews database migration files before merge, collecting forward, rollback, locking and data-safety evidence, with a decision that is blocked whenever evidence is missing. The agent reviews only the migration files named in the arguments, plus the code needed to check their compatibility, and never applies a migration.py` and stops if the checker rejects any path outside `migrations/`.

When should I use Database Migration Review?

Database Migration Review fits situations like: reviewing a PR that adds or changes files under migrations/; checking rollback and locking risk before merging a schema change; collecting evidence that a data migration is safe at production data volumes.

How do I install Database Migration Review in Claude Code?

Run `npx skills add rohitg00/ai-engineering-from-scratch --skill migration-review -a claude-code`. Or copy the skill folder (certifications/claude/lessons/19-claude-code-memory-rules-skills-and-ci/outputs/migration-review-skill in rohitg00/ai-engineering-from-scratch) into .claude/skills/migration-review in your project. Claude Code loads it when a task matches its description.

How do I install Database Migration Review in Codex?

Run `npx skills add rohitg00/ai-engineering-from-scratch --skill migration-review -a codex`. Or copy the skill folder (certifications/claude/lessons/19-claude-code-memory-rules-skills-and-ci/outputs/migration-review-skill in rohitg00/ai-engineering-from-scratch) into .agents/skills/migration-review in your project. Codex loads it when a task matches its description.

Can I use Database Migration Review in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add rohitg00/ai-engineering-from-scratch --skill migration-review -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/migration-review, .gemini/skills/migration-review, .github/skills/migration-review and .opencode/skills/migration-review in your project.

What does Database Migration Review need to run?

Going by SKILL.md and its folder, Database Migration Review needs Python for the scripts in its folder and the command-line tools its instructions call (python3). Our summary lists: Python 3 to run `scripts/check_scope.py`. Its frontmatter pre-approves these tools: Read, Grep, Glob, Bash(python3 ${CLAUDE_SKILL_DIR}/scripts/check_scope.py *).

Does Database Migration Review access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Database Migration Review safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Database Migration Review use?

Database Migration Review is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Database Migration Review use?

About 315 tokens (SKILL.md is roughly 1.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 157 tokens, read only when the agent opens those files.

What are the alternatives to Database Migration Review?

Skills that share tags, products or a category with Database Migration Review: Openwrt Package Update (NethServer/nethsecurity, 191 stars), Oraclecloud Schema Migration (jeremylongshore/tons-of-skills-marketplace, 2.8k stars), Saleor Django Migration Rules (saleor/saleor, 23k stars) and Python Database Patterns (aiskillstore/marketplace, 430 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Database Migration Review?

rohitg00 (a GitHub user) maintains it in rohitg00/ai-engineering-from-scratch, which has 65,983 GitHub stars. The repository holds 16 skills in this directory. The repository was last updated on October 9, 2026.

Source: rohitg00/ai-engineering-from-scratch on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.