legal-search

legal-search is a skill for Claude Code, Codex from ThomasMoreAI/legal-skills-open. It costs 103 tokens per session (1,336 once invoked), scanned A, original, Apache-2.0.

A legal research tool for finding US court opinions, court dockets, EU legislation, and EU case law. It searches sources such as CourtListener, Harvard Case Law, and EUR-Lex.

In plain words
What is it for?
Use it to find relevant cases, check court filings, research legal issues, and look up US or EU laws and decisions.
Why use it?
It reduces the time spent searching separate legal databases and narrowing results by keywords, dates, or jurisdiction.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to find relevant cases, check court filings, research legal issues, and look up US or EU laws and decisions.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/thomasmoreai/legal-skills-open/legal-search
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 legal-search
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 legal-search

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/thomasmoreai/legal-skills-open/legal-search"><img src="https://agentmods.dev/badge/skills/thomasmoreai/legal-skills-open/legal-search.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 103 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,336 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00103 $0.01336
Opus 5 $0.00051 $0.00668
Sonnet 5 $0.00021 $0.00267
Haiku 4.5 $0.00010 $0.00134

Measured 9d ago against content hash 6d8de3cf7721, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

legal-search scanned grade A with 1 finding 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 9d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -s "https://www.courtlistener.com/api/rest/v4/search/?q=qualified+immunity&type=o&order_by=score+desc" \
cross-jurisdiction/litigation/skills/legal-search/SKILL.md · 135 lines

How it starts

The opening of the file, as written. The whole thing — 135 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Search US case law via CourtListener and Harvard Case Law Access Project, and EU law via EUR-Lex. Covers court opinions, dockets, and legislative documents.

CourtListener API (US Case Law)

Free, open API for US federal and state court opinions and dockets. Base URL: https://www.courtlistener.com/api/rest/v4/

Search Opinions

curl -s "https://www.courtlistener.com/api/rest/v4/search/?q=qualified+immunity&type=o&order_by=score+desc" \
  | python3 -c "
import sys, json
data = json.load(sys.stdin)
for r in data.get('results', [])[:10]:
    name = r.get('caseName', 'N/A')
    court = r.get('court', 'N/A')
    date = r.get('dateFiled', 'N/A')
    cite = r.get('citation', [r.get('sibling_ids', 'N/A')])
    print(f'[{date}] {name}')
    print(f'  Court: {court}')
    print()
"

Search Dockets

curl -s "https://www.courtlistener.com/api/rest/v4/search/?q=antitrust+merger&type=r&order_by=score+desc"

Filter by Date Range

curl -s "https://www.courtlistener.com/api/rest/v4/search/?q=fourth+amendment+digital+privacy&type=o&filed_after=2020-01-01&filed_before=2024-12-31&order_by=dateFiled+desc"

Filter by Court

# Supreme Court opinions
curl -s "https://www.courtlistener.com/api/rest/v4/search/?q=free+speech&type=o&court=scotus&order_by=dateFiled+desc"

# Specific circuit court
curl -s "https://www.courtlistener.com/api/rest/v4/search/?q=patent+eligibility&type=o&court=cafc&order_by=dateFiled+desc"

Common Court Codes

scotus (SCOTUS), ca1-ca11 (Circuit Courts), cafc (Federal Circuit), cadc (DC Circuit), nyd (SDNY), cand (N.D. Cal).

Harvard Case Law Access Project

Historical US case law (1658-2020). Free API with registration. Base URL: https://api.case.law/v1/

Search Cases

curl -s "https://api.case.law/v1/cases/?search=miranda+rights&decision_date_min=2000-01-01&page_size=10" \
  | python3 -c "
import sys, json
data = json.load(sys.stdin)
for c in data.get('results', []):
    name = c.get('name_abbreviation', 'N/A')
    date = c.get('decision_date', 'N/A')
    court = c.get('court', {}).get('name', 'N/A')
    cite = c.get('citations', [{}])[0].get('cite', 'N/A') if c.get('citations') else 'N/A'
    print(f'[{date}] {name}')
    print(f'  Citation: {cite}  Court: {court}\n')
"

Read the full file on GitHub · 135 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. 9d ago First seen · 135 lines · 103 tokens per session scan A 6d8de3cf7721

Subscribe to this mod's changes

legal-search is a skill published in the GitHub repository ThomasMoreAI/legal-skills-open (72 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 103 tokens to every session and 1,336 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.