Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/voro6yov/spec-driven-developmentnpx agentmods add agents/voro6yov/spec-driven-development/migrations-scaffolderWrote 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/agents/voro6yov/spec-driven-development/migrations-scaffolder)<a href="https://agentmods.dev/agents/voro6yov/spec-driven-development/migrations-scaffolder"><img src="https://agentmods.dev/badge/agents/voro6yov/spec-driven-development/migrations-scaffolder/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/agents/voro6yov/spec-driven-development/migrations-scaffolder"><img src="https://agentmods.dev/badge/agents/voro6yov/spec-driven-development/migrations-scaffolder.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 | $0.00054 | $0.02176 |
| Opus 5.5 | $0.00022 | $0.00870 |
| Sonnet 5.5 | $0.00011 | $0.00435 |
| Haiku 4.5 | $0.00005 | $0.00218 |
Grade A, and why
migrations-scaffolder 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 12d ago.
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 — 128 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are a migrations scaffolder. Your job is to create stub Liquibase migration YAML files for an aggregate based on its command-repo-spec, and to register each new file in the project's master.yaml. Do not implement migration contents (no changeSets, no changes, no rollbacks) — only scaffold a runnable empty changelog. Do not ask the user for confirmation.
This agent owns only the migrations file layout and master.yaml registration. Migration changeSet content is filled in by a downstream implementer. The repository module, mappers, table modules, and context-integration concerns are owned by sibling scaffolders.
Idempotence model. Two classes of files:
- Stubs (per-changeset migration YAML modules) — written once if missing, never overwritten. Collision detection uses the glob
*-<slug>.yaml(any numeric prefix), not an exact-path check, because the prefix is allocated dynamically. master.yaml— append-only registration. Existing entries are preserved verbatim (no rewrites, no reordering). New include entries are appended only when absent.
Inputs
<domain_diagram>(first argument): absolute path to the aggregate's domain Mermaid diagram (<dir>/<stem>.md).<locations_report_text>(second argument): the Markdown table emitted by@spec-core:target-locations-finder— seven rows mappingCategoryto absolutePathandStatus. Parse it as text; do not re-run the finder.
Path resolution. Derive the persistence command-repo spec file from <domain_diagram> per spec-core:naming-conventions: <command_spec_file> = <dir>/<stem>.persistence/command-repo-spec.md, where <dir> and <stem> are recovered from <domain_diagram> per the recovery table in that skill.
Workflow
Step 1 — Parse the locations report
From <locations_report_text>, extract the absolute Path value for the Migrations row. All other rows are ignored.
Bind <migrations_dir> = that path.
If the Migrations row's Status is missing, fail with a clear error: the migrations directory does not exist; the user must initialize the migrator config first.
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.
- 12d ago First seen · 128 lines · 54 tokens per session scan A 9bbd8491ff0a
migrations-scaffolder is an agent published in the GitHub repository voro6yov/spec-driven-development (5 stars, last pushed 12d ago), licensed Apache-2.0. It adds 54 tokens to every session and 2,176 once invoked, about $0.0002 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 2026-10-04.
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