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LexRails U.S. Code Citation Validator
x402
LexRails U.S. Code Citation Validator is a paid API for AI agents from lex.chainverdict.xyz, paid per call via x402, $0.009/call, status unknown (last checked 2026-09-15).
Validates whether a given U.S. Code citation (title and optional section) is real and properly formed, returning a boolean result with an attestation object.
Price / call$0.009
Success—
StatusUnknown
How this service works
Validate a U.S. Code citation structurally (title exists, not reserved, section well-formed).
Output
Returns a JSON object with a 'valid' boolean indicating whether the cited U.S. Code title/section exists and is properly formed, plus an '_attestation' object providing a cryptographic or structured proof of the check result for auditability.
Example use cases
AI legal brief citation audit
“I used an AI to draft a legal memo and it cited 18 U.S.C. § 1030 — can you verify that citation is real and not hallucinated before I file this?”
LegalTech chatbot guardrail
“Before my legal chatbot sends this answer to the user, check whether the statute it cited — Title 15, Section 78j — actually exists in the U.S. Code.”
Compliance tool reference check
“My compliance report references U.S. Code Title 26, Section 501 — please confirm that's a valid statutory citation so we can be confident it won't embarrass us.”
Technical details
Endpoint
GEThttps://lex.chainverdict.xyz/v1/uscode/validateWhen to prefer
Choose this endpoint when you need a fast, deterministic, per-call check on whether a specific U.S. Code citation actually exists — especially in agentic legal workflows where LLM hallucination of statutory references is a risk. It is particularly valuable when you need an attestation object for audit trails. Prefer it over general-purpose LLM self-checks, which are probabilistic, or full legal database subscriptions when you only need existence validation rather than full text retrieval.
Side effects
- Missing required 'title' parameter returns validation error
- Malformed title or section strings may return valid:false without further detail
- Payment failure via x402 (insufficient USDC balance) blocks the call entirely
- Network or upstream lookup failure may return a 5xx error
- Ambiguous or partial section strings may yield inconclusive results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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