mahngebuehren-und-zinsanpassung-agb

mahngebuehren-und-zinsanpassung-agb is a skill for Claude Code from Klotzkette/claude-fuer-deutsches-recht. It costs 53 tokens per session (641 once invoked), scanned A, original, Apache-2.0.

A German contract-law checker for late-payment fees and automatic interest changes in standard terms. It examines fee limits, default damages, interest indexes, and the relevant evidence.

In plain words
What is it for?
Use it to review reminder-fee and interest-adjustment clauses and create a calculation table with assumptions, legal arguments, and questions to verify.
Why use it?
It helps prevent charges or interest rules from being rejected because they exceed actual loss or are too unclear. It also distinguishes the rules for different reminders and late payment.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the agb-recht-pruefer plugin — 202 skills shipped together

Good fit Use it to review reminder-fee and interest-adjustment clauses and create a calculation table with assumptions, legal arguments, and questions to verify.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/klotzkette/claude-fuer-deutsches-recht/mahngebuehren-und-zinsanpassung-agb
About the project

Claude – Deutsche rechtliche Fähigkeiten is an experimental collection of German-language skills, sub-agents, plugins, and workflows for legal work. It is intended for law firms, legal departments, and advisers handling areas such as employment, corporate, insolvency, data protection, and litigation law. The catalogue entries are the collection’s own skills, instructions, and plugin packaging.

Klotzkette/claude-fuer-deutsches-recht · 1,592 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 Klotzkette/claude-fuer-deutsches-recht --skill mahngebuehren-und-zinsanpassung-agb
Clone the repo
git clone --depth 1 https://github.com/Klotzkette/claude-fuer-deutsches-recht

Made for: Claude Code.

Or install agb-recht-pruefer, the plugin that ships this one along with the rest of its 202 skills.

Wrote this? Show the measurements

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README.md
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Your own site
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Your own site · 80×15
<a href="https://agentmods.dev/skills/klotzkette/claude-fuer-deutsches-recht/mahngebuehren-und-zinsanpassung-agb"><img src="https://agentmods.dev/badge/skills/klotzkette/claude-fuer-deutsches-recht/mahngebuehren-und-zinsanpassung-agb.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 53 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 641 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
  • NVIDIA SkillSpector pass 7 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 $0.00053 $0.00641
Opus 5 $0.00026 $0.00320
Sonnet 5 $0.00011 $0.00128
Haiku 4.5 $0.00005 $0.00064

Measured 7d ago against content hash 24acf8438ee6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

mahngebuehren-und-zinsanpassung-agb 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 7d 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.

agb-recht-pruefer/skills/mahngebuehren-und-zinsanpassung-agb/SKILL.md · 39 lines

What it actually says

Mahngebuehren Und Zinsanpassung Agb

Fachkern: Mahngebuehren Und Zinsanpassung Agb

  • Klauselproblem (Mahngebuehren Und Zinsanpassung Agb): Mahngebuehren und Zinsanpassungsklauseln in AGB. Skill klaert wie hoch Mahngebuehren in AGB sein dürfen Differenzierung erste zweite dritte Mahnung sowie die Wechselwirkung zum Verzugsschaden (§ 280 II 286 BGB). Behandelt automatische Zinsanpassung an Leitzins-Index BGH-Linie zu intransparenten Klauseln.
  • AGB-Weiche: Einbeziehung (§ 305 BGB), überraschende Klausel (§ 305c BGB), Transparenz (§ 307 Abs. 1 S. 2 BGB), Inhaltskontrolle (§§ 307-309 BGB), Rechtsfolge (§ 306 BGB) und Prozess-/Verbandsrisiko sauber trennen.
  • Beleglogik: Originalklausel, Vertragsumfeld, Verwendungsnachweis, Verhandlungsspuren, Kundengruppe, Marktstandard und wirtschaftliche Wirkung als Matrix erfassen.
  • Arbeitsprodukt: Klauselampel, Redline, Ersatzformulierung, Verhandlungsposition und gerichtsfeste Kurzbegründung mit Live-Check amtlicher Normenquellen.

Mahngebuehren

  • BGH X ZR 187/06: Mahnpauschale in AGB grundsätzlich auf den tatsaechlichen Aufwand begrenzt.
  • Faustregel: 2,50 bis 5,00 Euro pro Mahnung als Verzugsschadenspauschale wirksam.
  • Hoehere Pauschalen müssen begruendet sein.
  • § 309 Nr. 5 Buchst. a BGB: Pauschalierung in B2C nur, wenn niedriger als der typische Schaden.

Zinsanpassung

  • Klausel "Wir behalten uns vor, den Zinssatz zu ändern" unwirksam.
  • Klausel mit konkreter Indexkopplung (z. B. 3M-EURIBOR + Marge) wirksam, wenn transparent.
  • BGH XI ZR 233/12 zur Bauspar-Zinsklausel.

Verzugszinsen

  • § 288 BGB: Verzugszinsen über dem Basiszinssatz.
  • AGB-Klauseln, die Verzugszinsen unterhalb dieser Schwelle festlegen, sind unwirksam.

Prüfraster

  1. Mahnpauschale angemessen?
  2. Zinsanpassung mit Indexkopplung?
  3. Transparenz?
  4. Verzugszins entsprechend § 288 BGB?
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. 7d ago First seen · 39 lines · 53 tokens per session scan A 24acf8438ee6

Subscribe to this mod's changes

mahngebuehren-und-zinsanpassung-agb is a skill published in the GitHub repository Klotzkette/claude-fuer-deutsches-recht (1,592 stars, last pushed 2d ago), licensed Apache-2.0. It adds 53 tokens to every session and 641 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 2026-09-05.

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