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.
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.
npx skills add anthropics/claude-for-legal --skill matter-briefinggit clone --depth 1 https://github.com/anthropics/claude-for-legalWrote 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/anthropics/claude-for-legal/matter-briefing)<a href="https://agentmods.dev/skills/anthropics/claude-for-legal/matter-briefing"><img src="https://agentmods.dev/badge/skills/anthropics/claude-for-legal/matter-briefing/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/anthropics/claude-for-legal/matter-briefing"><img src="https://agentmods.dev/badge/skills/anthropics/claude-for-legal/matter-briefing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk 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 | $0.00070 | $0.01202 |
| Opus 5.5 | $0.00028 | $0.00481 |
| Sonnet 5 | $0.00014 | $0.00240 |
| Haiku 4.5 | $0.00007 | $0.00120 |
Grade A, and why
matter-briefing 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 3d 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- matter-briefing — 100% identical, 0 lines differ
How it starts
The opening of the file, as written. The whole thing — 110 lines — stays where its author put it; the contents beside it link to each section on GitHub.
/matter-briefing
- Load
~/.claude/plugins/config/claude-for-legal/litigation-legal/CLAUDE.md→ risk calibration + relevant stakeholders. - Follow the workflow and reference below.
- Read
~/.claude/plugins/config/claude-for-legal/litigation-legal/matters/[slug]/matter.md+~/.claude/plugins/config/claude-for-legal/litigation-legal/matters/[slug]/history.md+ log row from_log.yaml. - Produce briefing: current posture, what's changed since last update, next deadline, open questions, risk re-assessment check ("does the
risk:field still reflect reality?"). - Flag staleness: if
last_updated> 30 days, say so.
Matter Briefing
Purpose
Give the counsel a clean read on one matter in the time it takes to walk to a conference room. Current posture, what's changed, what's next, what's worth reconsidering.
Load context
~/.claude/plugins/config/claude-for-legal/litigation-legal/matters/_log.yaml— structured row~/.claude/plugins/config/claude-for-legal/litigation-legal/matters/[slug]/matter.md— narrative intake~/.claude/plugins/config/claude-for-legal/litigation-legal/matters/[slug]/history.md— event log~/.claude/plugins/config/claude-for-legal/litigation-legal/CLAUDE.md— risk calibration (so "risk: high" means something specific, not generic)
Conflicts gate — unbypassable. Before briefing, check _log.yaml for the matter slug. If the matter is not in _log.yaml, refuse and route:
"I don't see [matter slug] in the matter log. Run
/litigation-legal:matter-intakefirst so the conflicts check runs and the matter workspace is set up. I won't build a briefing on a matter that hasn't been intaken — the conflicts check is the gate."
Input
Slug (required). If ambiguous or missing, ask the user to pick from a list of active matters.
The briefing
[WORK-PRODUCT HEADER — per plugin config ## Outputs — differs by role; see `## Who's using this`]
# [Matter Name] — Briefing as of [today]
**Status:** [status / stage]
**Risk:** [rating] ([severity] × [likelihood])
**Materiality:** [category]
**Outside counsel:** [firm — lead]
**Last updated:** [date] [flag ⚠️ STALE if >30d]
**Conflicts:** [status — flag ⚠️ if `pending` or `not-run`]
---
## One-paragraph summary
[Current posture. What are we doing and why. Name the pivot fact if one is captured.]
## What's changed recently
[Last 3-5 entries from history.md, most recent first. If history is thin, say so.]
## What's next
- **Immediate deadline:** [next_deadline + what it is]
- **Upcoming milestones:** [anything dated in matter.md or recent history]
- **Decisions pending:** [open questions flagged in matter.md]
## Exposure
[Range + any change since intake. If reserved, current reserve + whether recalibration is overdue.]
## Internal owners
[Who's looped in; whether anyone should be looped in and isn't]
## Risk re-assessment check
*A prompt, not an answer.*
- Does `risk: [rating]` still feel right, or has the case moved?
- Does `materiality: [category]` still match? (New facts might push toward reserve or disclosure.)
- Any new stakeholder the matter needs (e.g., CISO becomes relevant after a discovery development)?
## Open questions
[From matter.md and anything unresolved in history]
## For the conversation
[If user specified a purpose — "brief me before the call with outside counsel" — tailor the final section: questions to ask, decisions to get, updates to extract. If no purpose given, omit this section.]
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.
- 3d ago First seen · 110 lines · 70 tokens per session scan A d76405176522
matter-briefing is a skill published in the GitHub repository anthropics/claude-for-legal (9,529 stars, last pushed yesterday), licensed Apache-2.0. It adds 70 tokens to every session and 1,202 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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