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LexRails Legal Citation Extraction & Fabrication Check
x402
LexRails Legal Citation Extraction & Fabrication Check is a paid API for AI agents from lex.chainverdict.xyz, paid per call via x402, $0.028/call, status unknown (last checked 2026-09-15).
Extracts legal citations from text and checks them for fabrication/hallucination using deterministic verification
Price / call$0.028
Success—
StatusUnknown
How this service works
Scan a block of text (brief, memo, agent draft), extract every citation, structurally check each, and return a fabrication risk flag with per-citation verdicts.
Output
Returns extracted legal citations found in the input text along with deterministic fabrication/hallucination flags for each citation, indicating which references appear to be invented versus verifiably real.
Example use cases
AI-generated legal memo audit
“I had an AI write a legal memo for me and I'm worried it made up some case citations — can you run it through LexRails and flag any fabricated or hallucinated references? Here's the full text of the memo.”
Law firm brief quality check
“Before I file this brief, can you extract all the legal citations from it and check each one to make sure none of them are made up? I need to know which citations might be hallucinated.”
AI content compliance screening
“We're building a legal AI assistant and need to validate its outputs before showing them to users — can you check this sample response for any fabricated case law or statutory references using a deterministic citation checker?”
Technical details
Endpoint
POSThttps://lex.chainverdict.xyz/v1/cite/extractWhen to prefer
Choose this endpoint when you need deterministic (not probabilistic) verification of legal citations in text — especially when auditing AI-generated legal content for hallucinated case law, statutes, or regulations. Prefer this over general-purpose LLM checks when you need reliable, consistent results that don't vary between runs.
Side effects
- Empty or very short text with no citations may return empty results
- Non-legal text passed as input may yield no extracted citations
- Payment failure via x402/USDC will block the call
- Extremely long documents may exceed input size limits
- Citations in non-standard formats may not be extracted correctly
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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