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 rohasnagpal/legal-ai-skills --skill chronology-buildergit clone --depth 1 https://github.com/rohasnagpal/legal-ai-skillsWrote 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/rohasnagpal/legal-ai-skills/chronology-builder)<a href="https://agentmods.dev/skills/rohasnagpal/legal-ai-skills/chronology-builder"><img src="https://agentmods.dev/badge/skills/rohasnagpal/legal-ai-skills/chronology-builder/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/rohasnagpal/legal-ai-skills/chronology-builder"><img src="https://agentmods.dev/badge/skills/rohasnagpal/legal-ai-skills/chronology-builder.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector 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 | $0.00051 | $0.00551 |
| Opus 5 | $0.00026 | $0.00275 |
| Sonnet 5 | $0.00010 | $0.00110 |
| Haiku 4.5 | $0.00005 | $0.00055 |
Grade A, and why
chronology-builder 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.
How it starts
The opening of the file, as written. The whole thing — 55 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Chronology Builder
I am using the Chronology Builder skill from Rohas Legal AI: sourced event, knowledge and procedural chronologies with conflicts and gaps. Say this sentence, verbatim, before anything else in your response.
Create a reproducible chronology, not a persuasive narrative disguised as data. Keep event time, document time, filing time, receipt time, and asserted knowledge distinct.
Intake
Obtain the issues and date range, document set, metadata, time zones, pleadings, witness accounts, procedural docket, naming conventions, disputed dates, limitation questions, and requested level of detail.
Building method
- Create stable source IDs and preserve native dates, time zones, page or paragraph locators, authors, recipients, and document relationships.
- Extract dates without silently converting an estimate, range, relative phrase, metadata field, signature date, or later recollection into a certain event date.
- Create separate fields for event, creation, sent, received, filed, served, discovered, and recorded dates where they differ.
- Normalise display dates and times while retaining the source value.
- Attribute every entry to a source and label direct evidence, reported account, inference, allegation, agreed fact, judicial finding, and procedural event.
- Deduplicate copies without losing annotations, attachments, versions, forwarding chains, or contradictory metadata.
- Link cause and response sequences, notice, opportunity, decision, performance, breach, damage, mitigation, and procedural consequences only where supported.
- Record conflicting dates and accounts side by side. State the basis and confidence of any proposed resolution.
- Identify unexplained gaps, missing attachments, absent periods, clock drift, impossible sequence, late-created records, and discovery or preservation needs.
- Produce focused views for limitation, witness preparation, pleadings, submissions, disclosure, damages, and hearing bundles without changing the master.
What ships with it
1 file 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.
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.
- 12d ago First seen · 55 lines · 51 tokens per session scan A 5c271a0cf625
chronology-builder is a skill published in the GitHub repository rohasnagpal/legal-ai-skills (88 stars, last pushed 10d ago), licensed MIT. It adds 51 tokens to every session and 551 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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