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EU Court Citation Graph
x402
EU Court Citation Graph is a paid API for AI agents from recht.halowerk.com, paid per call via x402, $0.007/call, status unknown (last checked 2026-09-16).
For a given EU Court of Justice or General Court decision, returns the legal acts and earlier rulings it cites (outbound) and the later rulings that cite it (inbound), each with CELEX number and date.
Price / call$0.007
Success—
StatusUnknown
How this service works
For a Court of Justice or General Court decision, returns the legal acts and earlier rulings it cites, and separately the later rulings that cite it, each with its CELEX number and date. The inbound count is the substance: how often a ruling is cited is the best available measure of its weight in the case law, since a judgment thirty later ones rely on carries the doctrine while one nobody cites decided a single case, and the two are indistinguishable from the text alone.
Output
Returns two structured lists: (1) outbound citations — the legal acts and earlier court rulings referenced by the queried decision, each with CELEX number and date; (2) inbound citations — the later court rulings that cite the queried decision, each with CELEX number and date, plus an inbound citation count reflecting the ruling's weight in EU case law.
Example use cases
Measure doctrinal weight of a landmark ruling
“How influential is the Schrems II judgment, C-311/18? Show me how many later Court of Justice rulings have cited it and what earlier cases it relied on.”
Trace legal basis for a General Court decision
“For General Court case T-691/14, give me all the EU legal acts and prior judgments it references, along with each one's CELEX number and date.”
Build a case law lineage for legal research
“I'm researching EU competition law precedent — can you map the full citation graph for C-413/14 P, including which rulings came before it and which ones have built on it since?”
Technical details
Endpoint
POSThttps://recht.halowerk.com/v1/court-citation-graphWhen to prefer
Choose this endpoint when you need to understand a specific EU court decision's position in the case law network — either tracing what it relied on or measuring its downstream influence by inbound citation count. It is the right tool for legal research, precedent analysis, and assessing doctrinal weight of CJEU or General Court rulings. Prefer it over full-text search when you already have a decision identifier and need structured citation relationships rather than document content.
Side effects
- Unknown or malformed CELEX/decision identifier returns an error or empty result
- Decision not indexed in the citation graph returns empty citation lists
- Non-court documents (e.g. regulations, directives) may not be supported as the primary input
- Network or upstream data source unavailability returns a service error
- Very recent judgments may have zero inbound citations if not yet cited
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| celex | string | CELEX of a court decision, e.g. 62019CJ0311. |
| limit | integer |
Tags
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