irac-practice

irac-practice is a skill for Claude Code from anthropics/claude-for-legal. It costs 69 tokens per session (2,386 once invoked), scanned A, original, Apache-2.0.

A feedback tool for legal essays written using IRAC: Issue, Rule, Application, and Conclusion. It checks issue-spotting, rule accuracy, analysis, structure, and organisation without rewriting the essay or providing a model answer.

In plain words
What is it for?
Use it to review a law-school essay or hypothetical answer, receive a grade range and prioritised fixes, and track recurring weaknesses across practice sessions.
Why use it?
It shows which parts of your legal reasoning need work while leaving the actual writing and problem-solving to you.

Skill for Claude Code ✓ vendor

Written for Claude Code: argument-hint in frontmatter. Also seen: reads .claude/ paths; mentions CLAUDE.md.

Part of the law-student plugin — 11 skills shipped together

Good fit Use it to review a law-school essay or hypothetical answer, receive a grade range and prioritised fixes, and track recurring weaknesses across practice sessions.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/anthropics/claude-for-legal/irac-practice
About the project

Claude for Legal is a collection of AI agents, skills, and data connectors for legal work such as commercial, privacy, employment, litigation, regulatory, and intellectual-property matters. Lawyers and legal teams use it through Claude Cowork, Claude Code, or the Claude Managed Agents API, with attorney review required for every output. The catalogue entries are its workflow plugins, skills, agents, and connectors.

anthropics/claude-for-legal · 9,544 stars · on GitHub

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 anthropics/claude-for-legal --skill irac-practice
Clone the repo
git clone --depth 1 https://github.com/anthropics/claude-for-legal

Made for: Claude Code.

Or install law-student, the plugin that ships this one along with the rest of its 11 skills.

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 irac-practice

README.md
[![agentmods](https://agentmods.dev/badge/skills/anthropics/claude-for-legal/irac-practice/github.svg)](https://agentmods.dev/skills/anthropics/claude-for-legal/irac-practice)
Your own site
<a href="https://agentmods.dev/skills/anthropics/claude-for-legal/irac-practice"><img src="https://agentmods.dev/badge/skills/anthropics/claude-for-legal/irac-practice/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 irac-practice

Your own site · 80×15
<a href="https://agentmods.dev/skills/anthropics/claude-for-legal/irac-practice"><img src="https://agentmods.dev/badge/skills/anthropics/claude-for-legal/irac-practice.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 2,386 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. Third-party audits
  • Socket pass 25 Jul 2026
  • Snyk pass 25 Jul 2026
How audits are shown
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 $0.02386
Opus 5.5 $0.00028 $0.00954
Sonnet 5 $0.00014 $0.00477
Haiku 4.5 $0.00007 $0.00239

Measured 6d ago against content hash 644e532977be, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-28, from the pricing page.

Security

Grade A, and why

irac-practice 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

law-student/skills/irac-practice/SKILL.md · 179 lines

How it starts

The opening of the file, as written. The whole thing — 179 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/irac-practice

  1. Load ~/.claude/plugins/config/claude-for-legal/law-student/CLAUDE.md → classes, exam formats, outline locations, learning style.
  2. Apply the framework below.
  3. Establish mode: student-provided hypo + answer, OR skill-generated hypo with student's answer.
  4. Read the answer closely. Map against expected IRAC components.
  5. Output structured feedback: issues spotted/missed, rule accuracy, analysis depth, organization, grade band, top 3 fixes, at most 1-2 labeled example phrasings (never a full IRAC model).
  6. Append to ~/.claude/plugins/config/claude-for-legal/law-student/irac-sessions/[student]/tracker.md for pattern detection. Surface patterns after 3+ sessions.

Real-matter check

If the question the student is asking sounds like it's about a REAL situation — their lease, their parking ticket, their family's business, their friend's arrest, a real dollar amount, a real deadline, a real party name — stop.

"This sounds like a real situation, not a hypothetical. I can't give you legal advice, and you can't give it either — you're not a lawyer yet. If this is real, [the person] needs an actual lawyer: legal aid, your school's clinic, a lawyer referral service (your jurisdiction's bar association, law society, or legal aid body), or (if there's money) a private attorney. I'm happy to help you understand the general legal concepts involved, but that's study, not advice."

Watch for: real names, real addresses, real dates, specific dollar amounts, "my landlord/boss/parent/friend," "I got a ticket/letter/notice," deadlines measured in days. Any one of these is a trigger.

Purpose

1L writing is mostly IRAC. 2L-3L writing that touches legal analysis is IRAC under the hood. The exam rewards structure as much as content. This skill grades structure — did you spot the issues, did you state the rules correctly, did you apply rules to facts or just restate both?

Does not rewrite the essay. Ever. The whole point is that you learn by writing, getting specific structural feedback, and rewriting yourself.

Read the full file on GitHub · 179 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. 6d ago First seen · 179 lines · 69 tokens per session scan A 644e532977be

Subscribe to this mod's changes

irac-practice is a skill published in the GitHub repository anthropics/claude-for-legal (9,544 stars, last pushed 4d ago), licensed Apache-2.0. It adds 69 tokens to every session and 2,386 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 2026-09-23.

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