Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add AI-Unified-Process/marketplace --skill flyway-schemagit clone --depth 1 https://github.com/AI-Unified-Process/marketplaceWrote 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.
[](https://agentmods.dev/skills/ai-unified-process/marketplace/flyway-schema)<a href="https://agentmods.dev/skills/ai-unified-process/marketplace/flyway-schema"><img src="https://agentmods.dev/badge/skills/ai-unified-process/marketplace/flyway-schema/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.
<a href="https://agentmods.dev/skills/ai-unified-process/marketplace/flyway-schema"><img src="https://agentmods.dev/badge/skills/ai-unified-process/marketplace/flyway-schema.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00206 | $0.00787 |
| Opus 5.5 | $0.00082 | $0.00315 |
| Sonnet 5.5 | $0.00041 | $0.00157 |
| Haiku 4.5 | $0.00021 | $0.00079 |
Grade A, and why
flyway-schema 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 today.
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.
How it starts
The opening of the file, as written. The whole thing — 67 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Flyway Schema
Instructions
Create the versioned Flyway migrations that the use case $ARGUMENTS needs, from docs/entity_model.md.
Scope
- Consumes the entity model and the existing migrations in
src/main/resources/db/migration/. - Produces new
V<n>__<description>.sqlfiles, named after the tables they change, never after a use case. - Never touches an applied migration, Java code, tests, or anything under
docs/other than the Markers table ofdocs/architecture/stack.md.
Run Directly or from /use-case-implement
Run from /use-case-implement, this skill inherits the inputs that skill read, the gaps the user answered, and its
rules for reconciling an existing implementation; it does not repeat the status check or ask the same questions
again. Run directly, read the use case, the requirements it links, docs/entity_model.md, and
docs/architecture/stack.md yourself, and stop on a Draft or Reviewed use case.
Business Rule Markers
A CHECK, UNIQUE, or index that enforces a business rule gets -- UC-XXX BR-YYY: <rule> on the line above it.
Markers
Keep this skill's rows in the Markers table of docs/architecture/stack.md exactly as
references/markers.md lists them: add them when they are missing, correct them when they
differ. Touch no other row.
Workflow
- Read the entity model and the existing migrations; take the next free version number.
- Write only the tables, columns, and constraints the use case needs and the schema does not have yet. When the schema already has everything, write nothing and say so in the Handover.
- Update the Markers table — see "Markers".
- Report the files and end with the Handover.
Handover
Handover from flyway-schema (UC-XXX)
- V<n>__<description>.sql — src/main/resources/db/migration/
- table <name> (<column> <type> <constraints>, …)
- constraint <name> — UC-XXX BR-YYY
Nothing to do: <reason> (when the schema already has everything the use case needs)
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- today First seen · 67 lines · 206 tokens per session scan A 4efbf2532b4f
flyway-schema is a skill published in the GitHub repository AI-Unified-Process/marketplace (150 stars, last pushed yesterday), licensed Apache-2.0. It adds 206 tokens to every session and 787 once invoked, about $0.0008 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 2026-10-25.
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