X3 Compliance API

DOT compliance, in your software.

X3 MVR is part of the X3 compliance family. One X3 Compliance API key powers it all — DataQ violation scoring, HOS Part 395 log auditing, and California Clean Truck Check obligation lookups — through simple REST calls. Built for TMS, ELD, and safety platforms.

Get an API key View the docs

One key, three engines

# DataQ violation score
POST https://x3dataq.com/api/v1/score
# HOS Part 395 log audit
POST https://x3hos.com/api/v1/hos-score
# Clean Truck Check obligation
POST https://x3cleantruck.com/api/v1/ctc-score

x-api-key: x3q_live_••••••••

For X3 MVR

X3 MVR covers live MVR / SMS score monitoring and the drivers behind it. A dedicated MVR score & BASIC data endpoint is rolling out on the same key — tell us your use case and we'll enable it for your account.

{ "ok": true, "result": { ... },
"source": "verified", "disclaimer": "analysis, not legal advice" }

API pricing

One key, every X3 engine. Billed monthly by call volume.

Pick a plan → Stripe checkout → key emailed.

Starter

$199/mo

250 calls / mo

Growth

$499/mo

1,500 calls / mo

Scale

$1,499/mo

10,000 calls / mo

Usage-based, no surprises. Every plan includes monthly calls; beyond that you pay only for what you use — Starter $0.50, Growth $0.40, Scale $0.25 per additional call. One key works across every X3 engine. Cancel anytime; annual billing saves two months.

Ship it today

No sales call. No waitlist. Enter your email, pick a plan, and your live API key lands in your inbox the moment checkout completes. Cancel anytime.

Need 10k+ calls a month, a dedicated SLA, or full white-label? Talk to us about Enterprise →