uk-citation-verification

uk-citation-verification is a skill for Claude Code, Codex from LegalQuants/lq-skills. It costs 59 tokens per session (1,441 once invoked), scanned A, original, Apache-2.0.

A tool for checking whether UK legal citations, case names, paragraph references, and quotations can be verified against public sources. BAILII is a public database of British and Irish legal decisions, and EWCA citations identify England and Wales Court of Appeal cases.

In plain words
What is it for?
It is for auditing UK case citations and quotations, including checks using BAILII and other appropriate official sources.
Why use it?
It helps catch invented or inaccurate authorities before legal text is filed or relied on.

Skill for Claude CodeCodex

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

Good fit It is for auditing UK case citations and quotations, including checks using BAILII and other appropriate official sources.

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Install with agentmods
npx agentmods add skills/legalquants/lq-skills/uk-citation-verification
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 LegalQuants/lq-skills --skill uk-citation-verification
Clone the repo
git clone --depth 1 https://github.com/LegalQuants/lq-skills

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 uk-citation-verification

README.md
[![agentmods](https://agentmods.dev/badge/skills/legalquants/lq-skills/uk-citation-verification/github.svg)](https://agentmods.dev/skills/legalquants/lq-skills/uk-citation-verification)
Your own site
<a href="https://agentmods.dev/skills/legalquants/lq-skills/uk-citation-verification"><img src="https://agentmods.dev/badge/skills/legalquants/lq-skills/uk-citation-verification/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 uk-citation-verification

Your own site · 80×15
<a href="https://agentmods.dev/skills/legalquants/lq-skills/uk-citation-verification"><img src="https://agentmods.dev/badge/skills/legalquants/lq-skills/uk-citation-verification.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 59 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,441 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 $0.00059 $0.01441
Opus 5 $0.00030 $0.00720
Sonnet 5 $0.00012 $0.00288
Haiku 4.5 $0.00006 $0.00144

Measured 12d ago against content hash 8565a84c614e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

uk-citation-verification 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.

skills/uk-citation-verification/SKILL.md · 144 lines

How it starts

The opening of the file, as written. The whole thing — 144 lines — stays where its author put it; the contents beside it link to each section on GitHub.

uk-citation-verification

When to Use

  • A draft cites UK cases and needs a pre-filing citation audit.
  • AI-generated legal text may contain hallucinated authorities.
  • A user wants to verify neutral citations, party names, report citations, or quoted passages.
  • A cited proposition needs to be tied back to the authority actually retrieved.

This skill verifies existence and citation integrity. It does not decide the merits of the case.

For Scotland, Northern Ireland, tribunal-specific, or devolved materials, identify the applicable official source before treating the citation as verified.

Audience and Work Shape

Audience: UK litigators, trainees, paralegals, and legal researchers checking draft legal text before lawyer review or filing.

Work shape: pattern-matched verification. The skill resolves and classifies citations; it does not decide whether the authority supports a proposition.

  • Legal support, not legal advice: citation existence and integrity checks do not decide merits or legal propositions.
  • Privilege/confidentiality: drafts may be privileged or confidential. Use only approved environments or user-supplied/public sources; do not send client drafts to unapproved services.
  • Accountability: unresolved, ambiguous, traditional, or lower-confidence authorities remain for lawyer/researcher review.

Access Modes

This skill works in three modes:

  1. Live source mode - use browser, web search, MCP, API, or other configured access to retrieve public authority sources.
  2. User-supplied source mode - use judgment PDFs, HTML, text, screenshots, exports, URLs, or pasted source material supplied by the user.
  3. No-source mode - extract citations and prepare a verification queue, but do not mark citations as verified.

If the source cannot be retrieved or supplied, do not verify from model memory. Mark the item unverified-source-unavailable and ask for a source, URL, export, or connector.

How It Works

1. Extract citations

Read the full file on GitHub · 144 lines

Files

What ships with it

5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 · 144 lines · 59 tokens per session scan A 8565a84c614e

Subscribe to this mod's changes

uk-citation-verification is a skill published in the GitHub repository LegalQuants/lq-skills (54 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 59 tokens to every session and 1,441 once invoked, about $0.0003 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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