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Spring — Database migrations (Flyway) · jabrena | DecimalAI

databy jabrena

Spring — Database migrations (Flyway)

jabrena/313-frameworks-spring-db-migrations-flyway

Source jabrena/plinth ↗License Apache-2.0

Use when you need to add or review Flyway database migrations in a Spring Boot application — Maven dependencies, db/migration scripts, spring.flyway.* configuration, baseline and validation, and alignment with JDBC or Spring Data JDBC. This should trigger for requests such as Add or review Flyway migrations in a Spring Boot project; Configure spring.flyway or db/migration layout; Add versioned Flyway SQL migrations for Spring Boot; Review Spring Boot database migration ordering; Fix repeatable F

NewMaintained

Automatic

Coding pack

Last verified 8/20/2026

What it changes

Passed 13 of 18 test cases with the skill, and 16 of 18 without it.

Without skill87%

With skill74%

Checks it passed that the model alone missed

Halts operation immediately if project compilation fails.

1 fixed16 passed either way2 still failing4 broke

Pass-rate lift: -13 pp
Tokens: +36%
Agent turns: 0%
Response time: -21%

Model gemini-3.6-flashMeasured 8/20/2026v117 of 23 cases passed with skill · 18 comparable

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/jabrena-313-frameworks-spring-db-migrations-flyway/SKILL.md https://app.decimal.ai/s/jabrena-313-frameworks-spring-db-migrations-flyway/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add jabrena-313-frameworks-spring-db-migrations-flyway, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/jabrena-313-frameworks-spring-db-migrations-flyway/ and pins it in .decimal/skills.lock

decimalai skills add jabrena-313-frameworks-spring-db-migrations-flyway

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/jabrena-313-frameworks-spring-db-migrations-flyway/SKILL.md https://app.decimal.ai/s/jabrena-313-frameworks-spring-db-migrations-flyway/SKILL.md

Raw file: /s/jabrena-313-frameworks-spring-db-migrations-flyway/SKILL.md ↗ · machine-readable summary at /s/jabrena-313-frameworks-spring-db-migrations-flyway.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

A test case the skill fixed. Same model, same prompt, with and without the skill.

Prompt

We have drafted a Flyway SQL migration script to add a foreign key constraint. Before we apply this migration or write further code, what mandatory compilation step must be run according to standard safe workflow constraints in a Maven-based project?

What was checked, without and with the skill
Checked	Without skill	With skill
Requires executing `./mvnw compile` or `mvn compile` before applying migration changes.	Passed	Passed
Halts operation immediately if project compilation fails.	Missed	Passed

case-10 · gemini-3.6-flash · 8/20/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md62 lines4 files

Spring — Database migrations (Flyway)

Apply Flyway migration guidelines for Spring Boot.

What is covered in this Skill?

flyway-core and database-specific Flyway modules (e.g. PostgreSQL) with Spring Boot BOM
Versioned SQL under src/main/resources/db/migration (V{version}__{description}.sql)
spring.flyway.* properties: locations, baseline-on-migrate, validate-on-migrate
Optional Java migrations (BaseJavaMigration) for data backfills
Forward-only discipline: do not rewrite applied migrations in shared environments
Parallel Change as the safe expand, migrate, contract workflow for breaking or data-sensitive schema changes
Coordination with @311-frameworks-spring-jdbc and @312-frameworks-spring-data-jdbc

Scope: Apply recommendations based on the reference rules and good/bad examples.

Constraints

Before applying Flyway or SQL changes, ensure the project compiles. After improvements, run full verification.

MANDATORY: Run ./mvnw compile or mvn compile before applying any change
SAFETY: If compilation fails, stop immediately
VERIFY: Run ./mvnw clean verify or mvn clean verify after applying improvements
BEFORE APPLYING: Read the reference for detailed rules and good/bad patterns
BREAKING CHANGE REVIEW: Before recommending or applying a migration, assess whether it can break deployed application versions, dependent services, reports, jobs, or production data interpretation; if yes, require explicit human review before proceeding
EDGE CASE: If the user goal is ambiguous, stop and ask a clarifying question before editing files or running project-wide commands
EDGE CASE: If required context, files, credentials, or tools are missing, report the blocker explicitly and ask whether to proceed with setup or fallback guidance
EDGE CASE: If requested changes conflict with project constraints or safety boundaries, explain the conflict and ask for user confirmation on the preferred trade-off

When to use this skill

Add or review Flyway migrations in a Spring Boot project
Configure spring.flyway or db/migration layout
Add versioned Flyway SQL migrations for Spring Boot
Review Spring Boot database migration ordering
Fix repeatable Flyway migrations in a Spring project

Workflow

Read references and assess project context

Track record

Benchmark

13 / 18

test cases passed, vs 16 / 18 without

Adoption

Users: 1
Times used: 2

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan14 of 15 checks clean

0 critical · 0 warning · 2 info — scanner v8 — 10/22/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

No issues (informational notes only).

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

jabrena / plinth

skills/313-frameworks-spring-db-migrations-flyway/SKILL.md

View on GitHub ↗

License Apache-2.0Imported 10/2/2026Version v1Bundled 3 files

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See it in action

What's inside

Spring — Database migrations (Flyway)

Constraints

When to use this skill

Workflow

Track record

Benchmark

Adoption

SkillSafety

Source

Other skills for the same job

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