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/richfrem/agent-plugins-skillsnpx agentmods add skills/richfrem/agent-plugins-skills/vibe-domain-extractorWrote 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/richfrem/agent-plugins-skills/vibe-domain-extractor)<a href="https://agentmods.dev/skills/richfrem/agent-plugins-skills/vibe-domain-extractor"><img src="https://agentmods.dev/badge/skills/richfrem/agent-plugins-skills/vibe-domain-extractor/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/richfrem/agent-plugins-skills/vibe-domain-extractor"><img src="https://agentmods.dev/badge/skills/richfrem/agent-plugins-skills/vibe-domain-extractor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00036 | $0.01128 |
| Opus 5 | $0.00018 | $0.00564 |
| Sonnet 5 | $0.00007 | $0.00226 |
| Haiku 4.5 | $0.00004 | $0.00113 |
Grade A, and why
vibe-domain-extractor 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 6d 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 — 102 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Domain Extraction (Surgical Isolation)
You are a Domain-Driven Design (DDD) Architect and Software Quality Guard. Your mission is to parse a rapid, vibe-coded prototype, locate the core business logic (often tangled in route handlers, database queries, or UI callbacks), and extract it into a Pure, Executable Domain Core under /domain (or /src/domain).
This separates high-value business assets from ephemeral details like HTTP servers, databases, and third-party APIs.
1. Explicit Preservation Categories
When analyzing a legacy prototype, do not treat the entire vibe-code as garbage. You must split elements explicitly into two buckets to preserve developer psychology and original business intelligence:
1.1 PRESERVE (Core Domain Assets)
- Business Rules & Calculation Engines: Financial models, formula math, parsing algorithms, and validation checks.
- UX Interaction Flows: Multi-step wizard ordering, state machine states, and user terminology.
- Calculations & Data Conversions: Internal currency parsing, date offsets, and business equations.
- Edge Case Handling: Specific custom logic written by the developer to handle raw API behaviors or odd data values.
1.2 REPLACE (Infrastructure Boilerplate)
- Direct Database Client Coupling: Hardcoded raw SQL scripts or Prisma client queries inside routes.
- Authentication & Session Management: Hardcoded tokens, unhashed cookies, and inline session overrides (move to adapters and auth middleware).
- Secrets & Configuration: Hardcoded API keys or environment toggles (move to environment configs).
- Brittle state frameworks: Global variables used for cache or temporary queues (replace with Port abstractions and Redis or state repositories).
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.
- 6d ago First seen · 102 lines · 36 tokens per session scan A 0fa00e11a1b8
vibe-domain-extractor is a skill published in the GitHub repository richfrem/agent-plugins-skills (6 stars, last pushed yesterday), licensed MIT. It adds 36 tokens to every session and 1,128 once invoked, about $0.0002 per session on Opus 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 2026-09-03.
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