domain-modeling

domain-modeling is a skill for Claude Code from bfollington/terma. It costs 95 tokens per session (1,259 once invoked), scanned A, original, CC-BY-SA-4.0.

A domain-modeling skill for deciding what the important concepts in a system are, what they should be called, and where their boundaries lie. A domain is the real-world problem area that the software represents.

In plain words
What is it for?
Use it when designing types, naming concepts, defining boundaries between areas of a system, or modeling business rules.
Why use it?
It helps keep the code’s types and names aligned with the problem, so the design is easier for people to understand and change.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the terma plugin — 18 skills, 6 agents shipped together

Good fit Use it when designing types, naming concepts, defining boundaries between areas of a system, or modeling business rules.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/bfollington/terma/domain-modeling
Install

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.

Any agent
npx skills add bfollington/terma --skill domain-modeling
Clone the repo
git clone --depth 1 https://github.com/bfollington/terma

Made for: Claude Code.

Or install terma, the plugin that ships this one along with the rest of its 18 skills, 6 agents.

Wrote 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.

agentmods badge for domain-modeling

README.md
[![agentmods](https://agentmods.dev/badge/skills/bfollington/terma/domain-modeling.svg)](https://agentmods.dev/skills/bfollington/terma/domain-modeling)
Your own site
<a href="https://agentmods.dev/skills/bfollington/terma/domain-modeling"><img src="https://agentmods.dev/badge/skills/bfollington/terma/domain-modeling.svg" alt="Measured on agentmods" height="20"></a>
Per session 95 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,259 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00095 $0.01259
Opus 5 $0.00048 $0.00629
Sonnet 5 $0.00019 $0.00252
Haiku 4.5 $0.00010 $0.00126

Measured 8d ago against content hash d96f9385acc1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

domain-modeling 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 8d 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.

plugins/terma/skills/domain-modeling/SKILL.md · 65 lines

The source is not reproduced here

Licensed CC-BY-SA-4.0

The repository is licensed CC-BY-SA-4.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Changes

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.

  1. 8d ago First seen · 65 lines · 95 tokens per session scan A d96f9385acc1

Subscribe to this mod's changes

domain-modeling is a skill published in the GitHub repository bfollington/terma (51 stars, last pushed 9d ago), licensed CC-BY-SA-4.0. It adds 95 tokens to every session and 1,259 once invoked, about $0.0005 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 2026-08-30.

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