For AI legal-tech vendors

The citation-verification API for AI legal tools.

Your users ask "will it hallucinate cases?" — end the objection. Every citation your product outputs, checked against the actual reporter. Deterministic. $0.05/citation, usage-billed.

Get an API key Read the docs

Who uses this

AI legal-drafting startups (the "Cursor for lawyers" wave), AI legal-research and brief-summarization products, contract-analysis tools that surface case law, and any product where a user might paste an LLM-generated citation into a court filing. If your customers are lawyers, and your product ever outputs a case citation, that citation needs to be verified before it ships. That's our whole job.

The math

A typical AI-drafting product priced at $199/mo per lawyer generates ~30 briefs per month per seat, averaging 15 citations per brief. That's 450 verification checks per seat per month — $22.50 at our first-tier price. That's ~11% of your MRR passed through as verification cost, in exchange for the single largest objection your prospects raise before buying evaporating.

Above 10,000 checks per month per key, the price drops to $0.03/citation.

Reference implementation

Single citation:

curl -X POST https://citationsafe.com/api/v1/verify/citation \
  -H "Authorization: Bearer cs_live_..." \
  -H "Content-Type: application/json" \
  -d '{"citation": "Brown v. Board of Education, 347 U.S. 483 (1954)"}'

Whole document (extracts every citation):

curl -X POST https://citationsafe.com/api/v1/verify/document \
  -H "Authorization: Bearer cs_live_..." \
  -H "Content-Type: application/json" \
  -d '{"text": "The court held that separate is inherently unequal. Brown v. Board of Education, 347 U.S. 483 (1954). See also Miranda v. Arizona, 384 U.S. 436 (1966)."}'

Full response shapes, error codes, and rate-limit headers in the API reference.

Pricing

$0.05 per citation for the first 10,000 checks per calendar month, per API key.
$0.03 per citation above 10,000 checks per calendar month.
Set a hard monthly cap to prevent runaway bills. Overage billing is opt-in per key.
No monthly minimum, no per-seat charge, no setup fee.

Get an API key

MVP: we manually issue keys after a brief eyeball. Fill this in and we'll be back inside a business day.

SLA + terms

Target uptime 99.5% (best-effort during MVP), citation-verdict correctness backed by our $10,000 fabrication warranty — the same guarantee we offer web-app subscribers. See the vendor-API terms of service for the full contract.