Which BGB norms (maintenance, custody) are covered?

The area covers §§ 1297 to 1921 BGB and §§ 111 to 270 FamFG. This includes maintenance under §§ 1601 ff. BGB and parental custody under §§ 1626 ff. BGB. Every provision is available on its own, with the decisions that cite it.

Are decisions of the higher regional courts included?

Yes. The higher regional court (OLG) hears appeals in family matters. 5,700+ decisions in this area come from higher regional courts.

What does access cost?

Every call uses credits from your organization's balance, the same one the web app uses. A search costs 1 credit. The table above lists the price per tool. Your first organization receives 30 credits once, valid for 30 days.

How do I connect Claude, ChatGPT or Cursor?

Add the MCP address on this page as a custom connector. Claude and ChatGPT sign in with OAuth. Cursor and your own agents use an API token. The MCP documentation lists the steps for each client.

Are the case numbers in the answers real?

Every case number Klaracase returns points to a decision in the corpus, with court and date. You can fetch and read the full text at any time. The legal assessment stays with you.

API and MCP

German family law: decisions and statutes via API and MCP

Case law on BGB family law and FamFG matters, ready for your software and your AI assistant. Maintenance, contact and pension rights adjustment, each with case number and the norms it cites.

Decisions from 1951 to 2026.

https://klaracase.de/mcp

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Server location: GermanyOne dedicated server hosted by Hetzner in Germany. Backups are stored encrypted in Frankfurt (eu-central-1).

Recipients disclosedEvery service that receives data from you is named in the privacy policy, with its purpose and location.

Built in GermanyBuilt for German law: court decisions, statutes and citations from German sources.

Data processing. The AI services that receive your search query process it in the EU. The providers belong to companies based in the USA. More on privacy and security

In the corpus

Decisions: 14,000+
Courts: 20
Statutes: 5
Linked citations: 49,000+

Decisions from 26 January 1951 to 28 August 2026. Measured on 11 October 2026.

Example query

One question, one call, real case numbers

A recorded query from 11 October 2026. Every case number below exists in the corpus, and the excerpts are verbatim.

Question

How is post-divorce maintenance set after a long marriage?

Call

search_decisions({
  "query": "Wie wird der nacheheliche Unterhalt bei langer Ehedauer bemessen?",
  "cited_norm": "§ 1578 BGB"
})

Answer

II-8 UF 64/09 · Oberlandesgericht Hamm · 31 August 2009
[Oberlandesgericht Hamm — Urteil vom 31.08.2009 — II-8 UF 64/09 | ECLI:DE:OLGHAM:2009:0831.II8UF64.09.00] [Entscheidungsgründe] Datum: 31.08.2009 Gericht: Oberlandesgericht Hamm Spruchkörper: 8. Senat für Familiensachen Entscheidungsart: Urteil Aktenzeichen: II-8 UF 64/09 ECLI: ECLI:DE:OLGHAM:2009:0
XII ZR 11/05 · BGH · 26 September 2007
[BGH — Urteil vom 26.09.2007 — XII ZR 11/05 | ECLI:DE:BGH:2007:260907UXIIZR11.05.0] [Leitsatz] BGB §§ 1573 Abs. 5, 1578 Abs. 1 Satz 2 Zur Befristung des Anspruchs auf Aufstockungsunterhalt nach § 1573 Abs. 5 BGB und zur Begrenzung des Unterhaltsanspruchs nach den ehelichen Lebensverhältnissen nach §
XII ZR 197/08 · BGH · 10 November 2010
[BGH — Urteil vom 10.11.2010 — XII ZR 197/08] [Entscheidungsgründe, Rn. 13-18] Die Höhe des nachehelichen Unterhalts sei aus Gründen der Billigkeit auf den angemessenen Lebensbedarf herabzusetzen. Nach Abwägung aller relevanten Umstände erscheine es nicht gerechtfertigt, nur den ehebedingten Verdien

Use cases

Three ways to use Family law

Child maintenance

Find orders on need under § 1610 BGB and on ability to pay under § 1603 BGB, with court and date.

Contact rights

Your agent searches with the cited_norm filter "§ 1684 BGB" and reads the decisions of the higher regional courts in full text.

Pension rights adjustment

Read provisions of the VersAusglG and the decisions on them in a single call.

Connect

Connect to Family law in a few minutes

Family law has no address of its own yet. Use the general address and narrow the search with the cited_norm filter.

Claude Code: run the command in a terminal and replace YOUR_TOKEN_HERE with your token.

claude mcp add --transport http klaracase https://klaracase.de/mcp \
  --header "Authorization: Bearer YOUR_TOKEN_HERE"

Claude.ai: add a custom connector and enter this address. You sign in with your account.

https://klaracase.de/mcp

More in the documentation: MCP documentation, REST API documentation

Coverage

What Family law covers

Decisions by court

Court	Decisions
OLG	5,700+
BGH	2,700+
AG	950+
VG	940+
OVG	790+
LG	710+
LSG	550+
BVerfG	480+
FG	350+
BVerwG	260+
SG	230+
BFH	160+
BSG	140+
LAG	110+
LVerfG	82
BAG	55
ArbG	21
BayObLG	17
OTHER	15
BPatG	6

Most cited norms

Norm	Citing decisions
§ 113 FamFG	1,300+
§ 1666 BGB	900+
§ 40 FamGKG	860+
§ 1684 BGB	700+
§ 1896 BGB	670+
§ 45 FamGKG	630+
§ 1603 BGB	600+
§ 1629 BGB	590+
§ 117 FamFG	570+
§ 1671 BGB	550+

Most cited decisions

Case number	Court	Date	Cited by
1 BvL 1/09	BVerfG	9 February 2010	1,100+
1 BvR 611/07	BVerfG	21 July 2010	450+
B 14 AS 50/10 R	BSG	19 October 2010	350+
1 BvL 16/11	BVerfG	18 July 2012	330+
14 L 195.19	VG Berlin 14. Kammer	29 July 2019	300+
B 4 AS 54/12 R	BSG	30 January 2013	280+
2 BvR 1001/04	BVerfG	8 December 2005	270+
2 BvR 909/06	BVerfG	7 May 2013	270+

Statutes in this area

BGB Bürgerliches Gesetzbuch
FamFG Gesetz über das Verfahren in Familiensachen und in den Angelegenheiten der freiwilligen Gerichtsbarkeit
VersAusglG Gesetz über den Versorgungsausgleich
LPartG Gesetz über die Eingetragene Lebenspartnerschaft
FamGKG Gesetz über Gerichtskosten in Familiensachen

Cost

What a call costs

Every call costs a fixed number of credits. New accounts get 30 credits once, valid for 30 days.

Tool	Purpose	Credits
search_decisions	Search decisions	1
get_decision	Full text of one decision	1
get_norm	Current text of one norm	1
get_citation_graph	Citations of one decision	2
assemble_datapackage	Data package from several decisions	5
list_facets	List filter values	free

See pricing and plans

Questions

Frequently asked questions

More areas of law

Back to the overview of API and MCP

Start with Family law

Data processing. The API and the MCP server use the same search as the web app. OpenRouter and Voyage AI process the text of a search query in the EU. Citation Check examines texts on our server in Germany, without AI services. More on privacy and security