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German AGB Change-Reservation Clause Checker (§308 No. 4 BGB)

Reviews unilateral change-reservation clauses in German standard terms against §§305–310 BGB and returns a risk verdict plus safer replacement wording.

Docs & OfficeAdvanced★ 1,692⑂ 230AI score 6/10Last updated: Oct 10, 2026

What it does

  • Runs a 7-step review of change-reservation clauses (§308 No. 4 BGB) inside German standard business terms (AGB).
  • Keeps the control layers separate: incorporation (§305), surprising clauses (§305c), transparency (§307(1)2), content control (§§307–309), consequences (§306), plus litigation/association risk (UKlaG).
  • Produces a work product: clause traffic light, redline, replacement wording, negotiation position and a short court-ready rationale.
  • Ships a narrow model clause (limited triggers, 6-week advance notice in text form, extraordinary termination right).

Who it's for

  • In-house counsel drafting SaaS or platform terms governed by German law.
  • Contract negotiators pushing back on one-sided modification rights with German counterparties.
  • Lawyers and law students consolidating BGH case law on modification clauses.

Examples

  1. "Is 'the provider may modify features where necessary' enforceable?" → flags it as an over-broad general clause likely void, and rewrites it with concrete triggers.
  2. "Check our digital-product update clause against §327f/§327r BGB" → applies the valid-reason, free-of-charge, information-duty and withdrawal-right checklist.
  3. "We're B2B, does §308 even apply?" → explains §310(1) exclusion, the §307 fallback assessment and the reciprocity expectation.

· · · Install guide · · ·

Try it now, no install

Paste this into Claude to use the skill without installing anything.

Read the instructions in this file and follow them to help me:
https://raw.githubusercontent.com/Klotzkette/claude-fuer-deutsches-recht/HEAD/agb-recht-pruefer/skills/aenderungsvorbehalt-308/SKILL.md

What I want: (describe your task here)

If Claude can't open the link, open it yourself and paste the contents instead.

↓ If it works for you, download the ZIP below and install it. Then it runs on its own — no pasting each time.

Install in the Claude app (no terminal)
  1. Download the ZIP with the button below.
  2. In Claude, open Settings → Capabilities and turn on 'Code execution and file creation'. (one time)
  3. Go to Customize → Skills → + → 'Upload a skill' and upload the ZIP.
↓ Download ZIP
Install in Claude Code

Let Claude do it — paste this into Claude Code

Install the skill I found on Claude Skill Mart.
Copy the agb-recht-pruefer/skills/aenderungsvorbehalt-308 folder from the GitHub repo Klotzkette/claude-fuer-deutsches-recht into my ~/.claude/skills/aenderungsvorbehalt-308/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

git clone https://github.com/Klotzkette/claude-fuer-deutsches-recht.git /tmp/cfdr && mkdir -p ~/.claude/skills && cp -r /tmp/cfdr/agb-recht-pruefer/skills/aenderungsvorbehalt-308 ~/.claude/skills/

⚠ This is a third-party skill. Check the source repository before installing.

  1. Open a terminal.
  2. Clone the repo: git clone https://github.com/Klotzkette/claude-fuer-deutsches-recht.git /tmp/cfdr
  3. Create the skills folder: mkdir -p ~/.claude/skills
  4. Copy the skill: cp -r /tmp/cfdr/agb-recht-pruefer/skills/aenderungsvorbehalt-308 ~/.claude/skills/
  5. Verify the references/ files (QUELLEN.md, PRUEFLOGIK.md, KLAUSELFAMILIEN.md) came along; copy them from the repo if missing.
  6. Restart Claude Code and ask e.g. "Review this change-reservation clause under §308 No. 4 BGB".
  7. Always re-verify statutes and case citations against official sources before relying on the output.
View source on GitHub ↗License: Apache-2.0