case-brief

case-brief is a skill for Claude Code, Codex from ThomasMoreAI/legal-skills-open. It costs 69 tokens per session (1,807 once invoked), scanned A, original, Apache-2.0.

A case brief is a structured summary of a court decision, covering its main rule, reasoning, and application. This tool creates one in the student's preferred format and can ask the student to state the rule first.

In plain words
What is it for?
Summarizing a judgment or pasted decision, identifying its legal rule, or practicing recall in a question-and-answer format.
Why use it?
It makes long decisions easier to study while distinguishing summaries based on supplied text from summaries based only on general model knowledge.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: reads .claude/ paths; mentions CLAUDE.md.

Good fit Summarizing a judgment or pasted decision, identifying its legal rule, or practicing recall in a question-and-answer format.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/thomasmoreai/legal-skills-open/case-brief
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 ThomasMoreAI/legal-skills-open --skill case-brief
Clone the repo
git clone --depth 1 https://github.com/ThomasMoreAI/legal-skills-open

Made for: Claude Code, Codex.

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 case-brief

README.md
[![agentmods](https://agentmods.dev/badge/skills/thomasmoreai/legal-skills-open/case-brief/github.svg)](https://agentmods.dev/skills/thomasmoreai/legal-skills-open/case-brief)
Your own site
<a href="https://agentmods.dev/skills/thomasmoreai/legal-skills-open/case-brief"><img src="https://agentmods.dev/badge/skills/thomasmoreai/legal-skills-open/case-brief/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.

agentmods 80×15 button for case-brief

Your own site · 80×15
<a href="https://agentmods.dev/skills/thomasmoreai/legal-skills-open/case-brief"><img src="https://agentmods.dev/badge/skills/thomasmoreai/legal-skills-open/case-brief.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 69 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,807 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 original 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 $0.00069 $0.01807
Opus 5.5 $0.00028 $0.00723
Sonnet 5.5 $0.00014 $0.00361
Haiku 4.5 $0.00007 $0.00181

Measured 12d ago against content hash b242ce3d0eff, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

case-brief 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.

br/general/skills/case-brief/SKILL.md · 120 lines

How it starts

The opening of the file, as written. The whole thing — 120 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/case-brief

  1. Carregue ~/.claude/plugins/config/claude-for-legal/law-student/CLAUDE.md → preferências de esquema/resumo.
  2. Aplique o workflow abaixo.
  3. Resuma no formato do aluno. Se modo sabatina: peça para o aluno afirmar a tese/ementa primeiro.

Propósito

Um resumo de julgado é ferramenta para lembrar o que a decisão diz. Esta habilidade monta um no seu formato — o formato que você vai realmente usar no seu esquema.

Disciplina de confiança

Resumos de julgado afirmam tese, fundamentação e ratio decidendi. Errar transforma seu esquema num mapa falso. Regra desta habilidade:

  • Se você colar o texto do acórdão: extraio tese/fundamentação/ratio do que está na sua frente. Confiante.
  • Se você só der o nome ou número do julgado: resumo a partir do conhecimento do modelo. Vale muito menos. Sinalizo toda linha que não tenho certeza com [INCERTO: motivo específico], e recomendo fortemente confirmar contra o inteiro teor antes de colocar no esquema. Se não conheço o julgado bem o suficiente, digo isso.
  • Se o julgado tem interpretações famosas mas contestadas: dou a leitura dominante e [VERIFICAR: checar o inteiro teor e o enquadramento do professor].

Um resumo construído no meu chute e na sua boa-fé é pior que nenhum resumo. Melhor errar para "não tenho certeza — leia você mesmo" do que inventar.

Carregar contexto

~/.claude/plugins/config/claude-for-legal/law-student/CLAUDE.md → preferências de esquema/resumo (formato, profundidade), estilo de aprendizado.

A regra "não resuma por mim" (regra dura)

Um resumo que você não escreveu é um resumo que você não vai lembrar. Todo modo desta habilidade tem como padrão dar andaime para o aluno escrever o resumo, não escrever o resumo.

O que esta habilidade faz em todo modo:

  • Pergunta ao aluno o que ele já tirou da leitura: os fatos, a questão jurídica, a tese como ele entendeu.
  • Fornece o template em branco no formato preferido (seções para Fatos, Questão, Tese/Ementa, Fundamentação, Regra, Notas).
  • Faz perguntas pontuais na seção mais fraca: "Quais fatos o tribunal efetivamente usou como base?", "Qual é a questão estrita vs. a questão mais ampla?", "Por que o tribunal rejeitou o voto vencido?"
  • Se o aluno colar o texto do acórdão, extrai literalmente a linguagem do tribunal para os campos de tese e fundamentação — isso não é resumir por ele; é apontar para o que o acórdão diz.
  • Sinaliza entendimentos confusos ou errados: "Você disse que a tese é X. A linguagem do tribunal é mais próxima de Y. Qual é a regra que você vai levar para o esquema?"

Read the full file on GitHub · 120 lines

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. 12d ago First seen · 120 lines · 69 tokens per session scan A b242ce3d0eff

Subscribe to this mod's changes

case-brief is a skill published in the GitHub repository ThomasMoreAI/legal-skills-open (88 stars, last pushed 3d ago), licensed Apache-2.0. It adds 69 tokens to every session and 1,807 once invoked, about $0.0003 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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