Is there an API for BGH criminal decisions?

Yes. The REST API and the MCP server return decisions of the BGH criminal senates with full text and citations. The address https://klaracase.de/mcp/strafrecht searches decisions that cite the StGB or the StPO.

How do I check a criminal law citation from an AI text?

Give the text to Citation Check, in the web app, through the REST API or with the MCP tool check_citations. It matches every case number and every norm against the corpus. Each reference is then marked "Confirmed" or "Not found".

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 criminal law: court decisions and statutes via API and MCP

The case law on the StGB and the StPO, ready for your software and your AI assistant. Appeals on points of law, sentencing and property offences, each with case number and the norms it cites.

Decisions from 1946 to 2026.

https://klaracase.de/mcp/strafrecht

Built and operated in Germany

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: 86,000+
Courts: 20
Statutes: 7
Linked citations: 270,000+

Decisions from 25 May 1946 to 29 September 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

When does a loss of assets amount to breach of trust under section 266 StGB?

Call

search_decisions({
  "query": "Wann liegt bei einem Vermögensnachteil im Sinne des § 266 StGB eine Untreue vor?",
  "cited_statutes": [
    "StGB",
    "StPO"
  ]
})

Answer

3 StR 17/15 · BGH · 26 November 2015
unter wirtschaftlichen Gesichtspunkten zu prüfen (BGH, Beschluss vom 17. August 2006 - 4 StR 117/06, NStZ-RR 2006, 378, 379). Ein Nachteil im Sinne von § 266 Abs. 1 StGB kann als sog. Gefährdungsschaden auch darin liegen, dass das …
1 StR 220/09 · BGH · 13 September 2010
Landgerichts, nach denen die auf Grundlage der Scheinrechnung erfolgenden Zahlungen der Siemens AG an die AUB einen endgültigen Schaden i.S.v. § 266 StGB verursachten, da kein den Geldabfluss kompensierender Vermögensvorteil bei der Siemens AG …
3 StR 490/16 · BGH · 27 July 2017
Lieferung auch nicht deshalb als eine rechtlich selbständige Handlung zu qualifizieren, weil sie für die Angeklagten die Gewährung eines Vorteils im Sinne des § 334 Abs. 1 StGB darstellt; denn der Mitangeklagte nahm - …

Use cases

Three ways to use Criminal law

Appeals on points of law

Find orders of the BGH criminal senates on what a procedural complaint under § 344(2) sentence 2 StPO must state.

Sentencing

Your agent reads the case law on § 46 StGB in full text and shows which later decisions cite it.

Fraud and financial loss

Citation Check matches every case number in your appeal brief on § 263 StGB against the corpus.

Connect

Connect to Criminal law in a few minutes

This address searches the Criminal law area only. Claude.ai and ChatGPT sign in with your account. The other routes use a token.

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

claude mcp add --transport http klaracase-strafrecht https://klaracase.de/mcp/strafrecht \
  --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/strafrecht

More in the documentation: MCP documentation, REST API documentation

Coverage

What Criminal law covers

Decisions by court

Court	Decisions
BGH	57,000+
OLG	9,800+
LG	4,700+
VG	3,500+
OVG	2,700+
BVerfG	1,800+
BVerwG	1,200+
AG	1,000+
LAG	790+
BayObLG	580+
LSG	520+
LVerfG	420+
FG	370+
OTHER	350+
SG	190+
ArbG	190+
BAG	95
BFH	92
BSG	90
BPatG	11

Most cited norms

Norm	Citing decisions
§ 349 StPO	25,000+
§ 354 StPO	6,100+
§ 473 StPO	5,900+
§ 344 StPO	5,600+
§ 244 StPO	5,000+
§ 263 StGB	5,000+
§ 267 StPO	4,700+
§ 21 StGB	4,500+
§ 265 StPO	4,400+
§ 261 StPO	4,300+

Most cited decisions

Case number	Court	Date	Cited by
VI ZR 5/20	BGH	30 July 2020	1,000+
VI ZR 433/19	BGH	19 January 2021	960+
1 BvR 461/03	BVerfG	3 March 2004	850+
1 BvR 209/83	BVerfG	15 December 1983	740+
VI ZR 889/20	BGH	9 March 2021	720+
2 AZR 541/09	BAG	10 June 2010	600+
2 BvR 2333/08	BVerfG	4 May 2011	490+
1 BvR 1476/91	BVerfG	10 October 1995	470+

Statutes in this area

StGB Strafgesetzbuch
StPO Strafprozeßordnung
JGG Jugendgerichtsgesetz
BtMG Gesetz über den Verkehr mit Betäubungsmitteln
OWiG Gesetz über Ordnungswidrigkeiten
GVG Gerichtsverfassungsgesetz
IRG Gesetz über die internationale Rechtshilfe in Strafsachen

Measured

Measured on real questions

Measured: without sources, three AI models cited 168 of 374 case numbers we could not confirm. With our data, 1 of 471.

See the benchmark for Criminal law

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 Criminal 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