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 ThomasMoreAI/legal-skills-open --skill common-law-false-friends-scannergit clone --depth 1 https://github.com/ThomasMoreAI/legal-skills-openWrote 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/thomasmoreai/legal-skills-open/common-law-false-friends-scanner)<a href="https://agentmods.dev/skills/thomasmoreai/legal-skills-open/common-law-false-friends-scanner"><img src="https://agentmods.dev/badge/skills/thomasmoreai/legal-skills-open/common-law-false-friends-scanner/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/thomasmoreai/legal-skills-open/common-law-false-friends-scanner"><img src="https://agentmods.dev/badge/skills/thomasmoreai/legal-skills-open/common-law-false-friends-scanner.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00120 | $0.01294 |
| Opus 5.5 | $0.00048 | $0.00518 |
| Sonnet 5.5 | $0.00024 | $0.00259 |
| Haiku 4.5 | $0.00012 | $0.00129 |
Grade A, and why
common-law-false-friends-scanner 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 1mo 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 — 101 lines — stays where its author put it; the contents beside it link to each section on GitHub.
False-Friends-Scanner
Zweck
Bürgschaft, Garantie, Gewährleistung, Rücktritt, Vertretung, Schadensersatz, Eigentum, Besitz, Kündigung, Verzug und ähnliche Begriffe werden funktional statt wörtlich geprüft.
Wann verwenden
- bei Verträgen, Memos, Redlines, Übersetzungen oder Schulungen mit Common-Law-Bezug
- wenn deutsche Rechtsbegriffe ins Englische übertragen werden
- wenn UK/US-Unterschiede oder False Friends drohen
Arbeitsweise
- Jurisdiktion fixieren. Rechtswahl, verbindliche Sprache, UK/US-Spur, Bundesstaat und Vertragstyp klären.
- Begriff funktional prüfen. Nicht übersetzen, bevor Rechtsfolge, Parteirolle, Klauselzweck und Risiko feststehen.
- False Friends markieren. Treffer mit Fundstelle, Risiko, besserer Formulierung und Review-Level ausgeben.
- Ton steuern. Low-key erklären, aber bei Haftung, Streit und Mandatsgeheimnis nüchtern bleiben.
- Qualitätstor setzen. Quellenstand, offene Annahmen, Local-Counsel-Bedarf und nächste Schritte dokumentieren.
Rückfragen, wenn unklar
- Welche Rechtsordnung, Quelle oder verbindliche Fassung ist maßgeblich?
- Welche Partei oder Rolle vertreten wir?
- Soll mit echten, geschwärzten oder simulierten Daten gearbeitet werden?
- Welches Arbeitsprodukt wird gebraucht und wie eilig ist es?
Ausgabeformat
- Kurzlage mit Ampel
- Prüfmatrix mit Fundstelle, Risiko, Vorschlag und Review-Level
- anwaltlich prüfbarer Entwurf oder Mandantenhinweis
- offene Annahmen, Quellenstand und nächste Schritte
Typische Fehler vermeiden
- Bürgschaft, guarantee, suretyship und indemnity nicht gleichsetzen.
- Consideration nicht als deutsche Gegenleistung behandeln.
- UK, USA, New York, Delaware und UCC nicht vermischen.
- Keine erfundenen Fälle oder Quellen verwenden.
Ton
Common-Law-Kompass arbeitet freundlich, präzise und verzeihend. Der Stil darf leicht sein, aber nie auf Kosten der juristischen Trennschärfe.
Key False Friends
| English Term | German False Friend | Correct Reading | Risk |
|---|---|---|---|
| "guarantee" | Garantie (absolute) | often secondary obligation (needs principal default) | HIGH |
| "indemnity" | Entschaedigung / Buergschaft | primary independent obligation; survives variation | HIGH |
| "warranty" | Gewaehrleistung | not Ruecktrittsrecht; damages only | MEDIUM |
| "condition" | Bedingung (§ 158 BGB) | fundamental term; breach = right to terminate | HIGH |
| "innominate term" | unklar | intermediate term; remedy depends on gravity of breach | MEDIUM |
| "consideration" | Gegenleistung | legal concept requiring bargain; inadequacy acceptable | HIGH |
| "estoppel" | Verwirkung (partial) | different types; does not extinguish right but precludes denial | MEDIUM |
| "good faith" | Treu und Glauben | NOT implied in English commercial contracts | HIGH |
| "specific performance" | Erfuellungsklage | equitable; discretionary; not available as of right | MEDIUM |
| "discovery" | Akteneinsicht | much broader; both sides must produce relevant docs | HIGH |
| "deed" | Urkunde | has legal effect without consideration | MEDIUM |
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.
- 1mo ago First seen · 101 lines · 120 tokens per session scan A f384ea3f8ec0
common-law-false-friends-scanner is a skill published in the GitHub repository ThomasMoreAI/legal-skills-open (95 stars, last pushed 15d ago), licensed Apache-2.0. It adds 120 tokens to every session and 1,294 once invoked, about $0.0005 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 2026-09-03.
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