Every X3 Fleet Safety product runs on one engine: verbatim 49 CFR, a 67,000-document compliance knowledge base, 200+ grounded compliance agents, and live carrier safety data by USDOT. Now you can build on the same engine — no regulation team required.
Query the exact controlling text of 49 CFR (and growing state coverage). Every response ties back to the section it came from, refreshed as the eCFR changes. No hallucinated rules, no stale citations.
Call the same specialist agents that power X3 HazMat, CSA, HOS, DataQ, Drug & Alcohol and more — each grounded in the verified corpus and scoped to a real compliance job. Ask a question, get a cited, decision-support answer.
One call returns a carrier's authority, safety-rating factors, and inspection signals — perfect for TMS, insurers, brokers, and factoring platforms that need to vet carriers or embed compliance intelligence without building it themselves.
The 200+ grounded agents are organized into specialist domains — the same crews that power each X3 Fleet Safety product. Call any of them by name over verbatim 49 CFR and live carrier data.
Decompose all seven BASICs, score roadside inspections and model percentile movement over verified SMS methodology.
Interpret §395 duty-status, exemptions and ELD edge cases, then validate logs and flag violations.
Classification, packaging, placarding, segregation and shipping papers grounded in 49 CFR Parts 171–180.
Part 40 and Part 382 program rules, testing pools, Clearinghouse and return-to-duty logic.
Read MVRs and build driver-qualification files against §391 — endorsements, medical cards and gaps.
Operating authority, state permits, IRP and IFTA requirements resolved by jurisdiction.
New-entrant and DOT audit readiness — the six factors, document checklists and corrective actions.
Score whether an inspection is worth challenging and assemble the grounded RDR evidence.
Request an API key and pick a plan. Free dev tier to start — no card.
Simple REST + JSON. Search the CFR, ask an agent, or pull a carrier by USDOT.
Embed cited compliance intelligence in your product. Meter by call; scale as you grow.
{
"question": "What are the HOS 14-hour rule limits?",
"domain": "hos"
}
→ 200 OK
{
"answer": "The 14-hour limit under §395.3(a)(2) ...",
"citations": ["49 CFR 395.3"],
"grounded": true
}
This is the same corpus search behind the API. Try "hours of service" or "drug testing pool".
Add cited HOS, DVIR, and compliance answers inside your dispatch product.
Pull carrier safety factors by USDOT to price and monitor risk.
Vet authority and catch fraud signals at onboarding, programmatically.
Score carrier reliability inside your credit and payment flows.
Build compliance apps on verified law without a regulation team.
Ground your own copilots and workflows in a source you can trust.
Pay for the calls you make — not per seat, not per truck.
Yes. X3 HazMat, CSA, HOS, DataQ and the rest all call this engine. X3 API opens it to your product.
Answers are tied to the verified, current CFR text and a curated 67k-document corpus, with citations. It’s decision support — always verify against the controlling regulation.
Authority status, safety-rating factors, and inspection signals by USDOT number — the inputs behind X3’s carrier vetting.
The free developer tier includes 1,000 calls a month at standard limits. Paid plans raise the ceiling and add higher rate limits and SLAs. Most CFR and corpus calls return in well under a second; live carrier pulls depend on the upstream source.
Keys are scoped per project and calls are served over HTTPS. Enterprise plans add a security review, a DPA, and volume/committed-use terms. We don’t sell your query data.
Email us for a free developer key and start calling the endpoints today — see the Docs for a quickstart.