DB Migrations
kurealnum/dotfiles
A skill your agent uses when generating or regenerating Drizzle migration files, changing database schema tables or columns, resolving migration sequence conflicts after rebase, reviewing migration…
A skill your agent uses when a database schema or data-meaning change needs Parallel Change, including expand, migrate, and contract sequencing for column renames, type or data reinterpretation…
Install 055 Design Parallel Change
$ npx skills add jabrena/plinth --skill 055-design-parallel-change -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install jabrena/plinth 055-design-parallel-change --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/jabrena/plinth.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/055-design-parallel-change .claude/skills/055-design-parallel-change && rm -rf skills-srcUse ~/.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/
Install the "055-design-parallel-change" agent skill from https://github.com/jabrena/plinth/tree/main/skills/055-design-parallel-change into .claude/skills/055-design-parallel-change/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "055-design-parallel-change", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/jabrena/plinth/tree/main/skills/055-design-parallel-changeType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add jabrena/plinth --skill 055-design-parallel-change -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install jabrena/plinth 055-design-parallel-change --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jabrena/plinth.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/055-design-parallel-change .agents/skills/055-design-parallel-change && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "055-design-parallel-change" agent skill from https://github.com/jabrena/plinth/tree/main/skills/055-design-parallel-change into .agents/skills/055-design-parallel-change/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "055-design-parallel-change", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add jabrena/plinth --skill 055-design-parallel-change -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install jabrena/plinth 055-design-parallel-change --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jabrena/plinth.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/055-design-parallel-change .cursor/skills/055-design-parallel-change && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "055-design-parallel-change" agent skill from https://github.com/jabrena/plinth/tree/main/skills/055-design-parallel-change into .cursor/skills/055-design-parallel-change/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "055-design-parallel-change", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/jabrena/plinth.git --path skills/055-design-parallel-change--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add jabrena/plinth --skill 055-design-parallel-change -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install jabrena/plinth 055-design-parallel-change --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jabrena/plinth.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/055-design-parallel-change .gemini/skills/055-design-parallel-change && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "055-design-parallel-change" agent skill from https://github.com/jabrena/plinth/tree/main/skills/055-design-parallel-change into .gemini/skills/055-design-parallel-change/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "055-design-parallel-change", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install jabrena/plinth 055-design-parallel-changeInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add jabrena/plinth --skill 055-design-parallel-change -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/jabrena/plinth.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/055-design-parallel-change .github/skills/055-design-parallel-change && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "055-design-parallel-change" agent skill from https://github.com/jabrena/plinth/tree/main/skills/055-design-parallel-change into .github/skills/055-design-parallel-change/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "055-design-parallel-change", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add jabrena/plinth --skill 055-design-parallel-change -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install jabrena/plinth 055-design-parallel-change --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jabrena/plinth.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/055-design-parallel-change .opencode/skills/055-design-parallel-change && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "055-design-parallel-change" agent skill from https://github.com/jabrena/plinth/tree/main/skills/055-design-parallel-change into .opencode/skills/055-design-parallel-change/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "055-design-parallel-change", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
055-design-parallel-change- GitHub stars
- 447
- Token cost
- ~1.1k tokens
- SKILL.md length
- 467 words
- Files
- 2 (incl. references)
- Skills in repo
- 124
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
A skill your agent uses when a database schema or data-meaning change needs Parallel Change, including expand, migrate, and contract sequencing for column renames, type or data reinterpretation…
- A database schema
- SKILL.md covers Constraints, When to use this skill, Workflow and Reference
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Data-meaning change needs Parallel Change
What it does
055 Design Parallel Change is an agent skill from jabrena/plinth. Use when a database schema or data-meaning change needs Parallel Change, including expand, migrate, and contract sequencing for column renames, type or data reinterpretation, large-table backfills, relationship-table changes, enum/status transitions, timezone/default changes, and index or uniqueness changes. This should trigger before framework-specific Flyway implementation guidance when deciding whether a migration needs a compatibility window or whether a simpler migration is sufficient. Part of Plinth Toolkit
Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/055-design-parallel-change.md`).
It sits in Databases, covering Database migrations and Database schema design. The repository describes itself as: Plinth is an AI-native engineering toolkit for modern Java enterprise SDLC, built around reusable Commands, Agents, Skills, and MCP Servers. The licence is Apache-2.0.
When your agent uses it
- A database schema
- Data-meaning change needs Parallel Change
- Including expand
- Contract sequencing for column renames
Example prompts
- “/055-design-parallel-change”
What it can do on your machine
Read from SKILL.md and the folder at commit dca88dc. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
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
055 Design Parallel Change loads about 1.1k tokens when it runs, and up to ~4.3k if it reads all its reference files. Until then it costs about 136 tokens; SKILL.md has 467 words of instructions outside code blocks.
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); files beside SKILL.md are not scanned.
SKILL.md
The full file from jabrena/plinth at commit dca88dc, republished under its Apache-2.0 licence (© jabrena). 467 words, ~1,139 tokens.
Download SKILL.mdSave it as
.claude/skills/055-design-parallel-change/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- 055-design-parallel-change
- description
- Use when a database schema or data-meaning change needs Parallel Change, including expand, migrate, and contract sequencing for column renames, type or data reinterpretation, large-table backfills, relationship-table changes, enum/status transitions, timezone/default changes, and index or uniqueness changes. This should trigger before framework-specific Flyway implementation guidance when deciding whether a migration needs a compatibility window or whether a simpler migration is sufficient. Part of Plinth Toolkit
- license
- Apache-2.0
- metadata.author
- Juan Antonio Breña Moral
- metadata.version
- 0.19.0
Parallel Change Design
Guide Java Enterprise developers through Parallel Change for database migration scenarios. This is an interactive SKILL.
What is covered in this Skill?
- Deciding whether a database migration needs a compatibility window
- Sequencing database changes as expand, migrate, and contract deployable steps
- Preserving old and new application versions during rollout and rollback windows
- Handling column renames, type or data reinterpretation, large backfills, relationship-table changes, and index or uniqueness changes
- Explaining tradeoffs such as temporary dual paths, extra migrations, verification effort, and delayed cleanup
- Routing framework-specific implementation to Spring Boot, Quarkus, or Micronaut Flyway skills after the design approach is clear
Constraints
Use Parallel Change as a database migration design pattern, then hand off implementation details to the framework-specific migration skill when needed.
- MUST read
references/055-design-parallel-change.mdbefore applying Parallel Change guidance - MUST explain expand, migrate, and contract as separate deployable steps when recommending Parallel Change
- MUST decide whether Parallel Change is needed before recommending framework-specific Flyway implementation details
- MUST recommend a simpler single migration when the change is additive, immediately safe, and does not require old and new application versions to coexist
- MUST describe the compatibility, data-preservation, verification, and cleanup tradeoffs of the chosen approach
- MUST use framework-specific Flyway skills for Spring Boot, Quarkus, or Micronaut implementation details after the migration strategy is selected
When to use this skill
- Apply Parallel Change to this database migration
- Use expand migrate contract for this schema change
- Plan a safe column rename migration
- Plan a zero-downtime database migration
- Should this Flyway migration use Parallel Change?
- Design a safe backfill and contract migration
- Decide if this schema change needs a compatibility window
Show full SKILL.md (198 more words)Show less
Workflow
- Classify the Migration Risk
Read references/055-design-parallel-change.md, then identify the schema shape, data meaning, application read/write path, rollout window, rollback expectation, and production-data risk affected by the migration.
- Choose Parallel Change or Simpler Migration
Recommend Parallel Change when old and new application versions or data interpretations must coexist. Recommend a simpler forward-only migration when the change is additive, small, immediately safe, and does not require a compatibility window.
- Design Expand, Migrate, Contract
For Parallel Change, separate expand, migrate, and contract into independently deployable steps. Keep the old shape valid during expand and migrate; contract only after all deployed code and data have moved to the new shape.
- Plan Verification and Operations
Define previous-release fixture checks, row-count expectations, duplicate detection, backfill monitoring, rollback behavior, and cleanup ownership. Prefer production-dialect migration tests and production-like data samples where feasible.
- Route Framework Implementation
After the strategy is clear, use 313-frameworks-spring-db-migrations-flyway, 413-frameworks-quarkus-db-migrations-flyway, or 513-frameworks-micronaut-db-migrations-flyway for framework-specific Flyway dependencies, configuration, migration locations, and tests.
- Report the Migration Plan
Report the chosen approach, rejected alternative, expand/migrate/contract sequence or simpler migration, verification evidence, cleanup trigger, tradeoffs, skipped checks, and remaining risks.
Reference
For detailed guidance, examples, and constraints, see references/055-design-parallel-change.md.
© jabrena, Apache-2.0. 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 1 other file (references) in skills/055-design-parallel-change of jabrena/plinth.
- SKILL.md
- references/055-design-parallel-change.md
Open the folder on GitHubat commit dca88dc
Compare with similar skills
055 Design Parallel Change 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| 055 Design Parallel Change this skilljabrena/plinth | 447 | — | ~1.1k | Automated safety check: Pass | Apache-2.0 | |
| DB Migrationskurealnum/dotfiles | 290 | — | ~820 | Automated safety check: Pass | None | |
| Change Database Schemamartin-ueding/geo-activity-playground | 100 | — | ~225 | Automated safety check: Pass | Custom licence | |
| Drizzlekurealnum/dotfiles | 290 | — | ~1.3k | Automated safety check: Pass | None | |
| Database Testingproffesor-for-testing/agentic-qe | 495 | 1 repos | ~1.7k | Automated safety check: Pass | MIT | |
| Migrationkortix-ai/suna | 20k | — | ~1.2k | Automated safety check: Pass | Custom licence |
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Related
Categories
Questions about 055 Design Parallel Change
What does 055 Design Parallel Change do?
A skill your agent uses when a database schema or data-meaning change needs Parallel Change, including expand, migrate, and contract sequencing for column renames, type or data reinterpretation…. 055 Design Parallel Change is an agent skill from jabrena/plinth. Use when a database schema or data-meaning change needs Parallel Change, including expand, migrate, and contract sequencing for column renames, type or data reinterpretation, large-table backfills, relationship-table changes, enum/status transitions, timezone/default changes, and index or uniqueness changes.
When should I use 055 Design Parallel Change?
055 Design Parallel Change fits situations like: A database schema; data-meaning change needs Parallel Change; including expand; contract sequencing for column renames.
How do I install 055 Design Parallel Change in Claude Code?
Run `npx skills add jabrena/plinth --skill 055-design-parallel-change -a claude-code`. Or copy the skill folder (skills/055-design-parallel-change in jabrena/plinth) into .claude/skills/055-design-parallel-change in your project. Claude Code loads it when a task matches its description.
How do I install 055 Design Parallel Change in Codex?
Run `npx skills add jabrena/plinth --skill 055-design-parallel-change -a codex`. Or copy the skill folder (skills/055-design-parallel-change in jabrena/plinth) into .agents/skills/055-design-parallel-change in your project. Codex loads it when a task matches its description.
Can I use 055 Design Parallel Change 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 jabrena/plinth --skill 055-design-parallel-change -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/055-design-parallel-change, .gemini/skills/055-design-parallel-change, .github/skills/055-design-parallel-change and .opencode/skills/055-design-parallel-change in your project.
What does 055 Design Parallel Change need to run?
SKILL.md names no scripts, command-line tools or credentials: 055 Design Parallel Change is instructions for the agent only.
Does 055 Design Parallel Change 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 055 Design Parallel Change 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. Review the folder before installing.
What licence does 055 Design Parallel Change use?
055 Design Parallel Change is published under the Apache-2.0 licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does 055 Design Parallel Change use?
About 1.1k tokens (SKILL.md is roughly 4.6k 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 3.2k tokens, read only when the agent opens those files.
What are the alternatives to 055 Design Parallel Change?
Skills that share tags, products or a category with 055 Design Parallel Change: DB Migrations (kurealnum/dotfiles, 290 stars), Change Database Schema (martin-ueding/geo-activity-playground, 100 stars), Drizzle (kurealnum/dotfiles, 290 stars) and Database Testing (proffesor-for-testing/agentic-qe, 495 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains 055 Design Parallel Change?
jabrena (a GitHub user) maintains it in jabrena/plinth, which has 447 GitHub stars. The repository holds 124 skills in this directory. The repository was last updated on October 7, 2026.
Source: jabrena/plinth on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.