chronology

chronology is a skill for Claude Code from anthropics/claude-for-legal. It costs 78 tokens per session (5,110 once invoked), scanned A, original, Apache-2.0.

A legal-document tool for building or updating a chronology, which is an ordered timeline of events, from supplied case documents and files. It extracts dates, removes duplicate events, and marks significance according to the case theory.

In plain words
What is it for?
Creating a matter chronology, merging events from document sources, tagging important events, and updating an existing timeline for legal review.
Why use it?
It turns scattered litigation records into a reviewable timeline and records which sources could not be read. It also helps preserve versions and identify gaps in the evidence.

Skill for Claude Code ✓ vendor

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

Part of the litigation-legal plugin — 16 skills, 1 agent shipped together

Good fit Creating a matter chronology, merging events from document sources, tagging important events, and updating an existing timeline for legal review.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/anthropics/claude-for-legal/chronology
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 · 9,529 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 chronology
Clone the repo
git clone --depth 1 https://github.com/anthropics/claude-for-legal

Made for: Claude Code.

Or install litigation-legal, the plugin that ships this one along with the rest of its 16 skills, 1 agent.

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 chronology

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/anthropics/claude-for-legal/chronology"><img src="https://agentmods.dev/badge/skills/anthropics/claude-for-legal/chronology.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 78 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,110 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 14 Sept 2026
  • Snyk warn 14 Sept 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 $0.00078 $0.05110
Opus 5.5 $0.00031 $0.02044
Sonnet 5 $0.00016 $0.01022
Haiku 4.5 $0.00008 $0.00511

Measured 3d ago against content hash f6b4df4a170f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-26, from the pricing page.

Security

Grade A, and why

chronology 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.

litigation-legal/skills/chronology/SKILL.md · 280 lines

How it starts

The opening of the file, as written. The whole thing — 280 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/chronology

  1. Load ~/.claude/plugins/config/claude-for-legal/litigation-legal/matters/[slug]/matter.md → theory, pivot fact, key facts.
  2. Load ~/.claude/plugins/config/claude-for-legal/litigation-legal/CLAUDE.md → Document storage sources, default matter folder pattern.
  3. Follow the workflow and reference below.
  4. Identify sources in order: user-provided paths this session, default matter folder, declared sources from ~/.claude/plugins/config/claude-for-legal/litigation-legal/CLAUDE.md.
  5. For readable sources: extract dated events. For unreachable sources: note in Gaps.
  6. De-dupe, merge with sources list per event.
  7. Tag significance (🔴/🟡/⚪) per matter theory.
  8. Write ~/.claude/plugins/config/claude-for-legal/litigation-legal/matters/[slug]/chronology.md (or format variant per flag).
  9. If prior version exists: version number increments, diff summary presented to user.
  10. Confirm before finalizing: "Here's what I built. Scan the 🔴 entries — anything I miscalled?"

Chronology

Disclosed-document use restrictions

Before working with a set of litigation documents, ask: "Were any of these documents obtained through disclosure or discovery in legal proceedings?" If yes:

  • England & Wales (CPR 31.22): Documents obtained through disclosure are subject to the implied undertaking — you may only use them for the purpose of the proceedings in which they were disclosed, unless the court grants permission, the disclosing party consents, or the document has been read in open court. Using them for a different matter, a different claim, or a commercial purpose without permission is a contempt.
  • US: Protective orders and Rule 26(c) may impose similar restrictions. Check the order.
  • Other jurisdictions: Similar restrictions commonly apply. Check the local rule.

Confirm: "This use is within the proceedings in which the documents were disclosed, or I have permission / consent, or the documents are now public." If not confirmed, flag it: "⚠️ Disclosed documents may have use restrictions. Confirm this use is permitted before proceeding."

Read the full file on GitHub · 280 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. 3d ago First seen · 280 lines · 78 tokens per session scan A f6b4df4a170f

Subscribe to this mod's changes

chronology is a skill published in the GitHub repository anthropics/claude-for-legal (9,529 stars, last pushed yesterday), licensed Apache-2.0. It adds 78 tokens to every session and 5,110 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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