{"uid":"cap_DczfS4T66Xe1yTF5T3JTZ","slug":"check-carrier-identity-71376cd9","name":"check_carrier_identity","description":"Use this when a carrier looks suspicious — a name change, a new USDOT number tied to an old fleet, a business you suspect re-registered after a revocation — and you need the full evidence: every other USDOT number sharing a contact identifier with it, and whether any of them carries a revocation or suspension motive. Call the free screen_carrier_identity first if you only need the flag and a count. Billed whenever the USDOT number resolves, even with no links found.","url":"https://fmcsa-mcp-843680657471.us-central1.run.app/x402/check_carrier_identity?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"usdot_number":{"type":"integer","description":"The carrier's USDOT number to check for shared identifiers with other carriers."}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_tjs5_iMHlSuFw2IpvryS2","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Investigates a USDOT number by surfacing all other USDOT numbers sharing contact identifiers with it and flagging any revocation or suspension history across those linked carriers.","exampleAgentPrompt":"I think this carrier might have re-registered after a revocation — can you do a full identity check on USDOT number 3842917 and show me every other USDOT linked to the same contact info plus any revocation or suspension flags across those?","exampleUseCases":[{"title":"Detecting chameleon carrier re-registration","prompt":"This trucking company just showed up with a brand new USDOT number but the address and phone look familiar — run a full identity check on USDOT 2984561 and tell me if it's connected to any previously revoked carriers."},{"title":"Freight broker carrier vetting","prompt":"Before I add this carrier to our approved list, I need a deep identity check on USDOT 1734209 — specifically whether it shares contact details with any carriers that have been suspended or had their authority revoked."},{"title":"Insurance underwriting due diligence","prompt":"We're about to write a policy for a carrier with USDOT 4123876 but their history looks thin — do a full identity investigation and show me all linked USDOT numbers and whether any of them have revocation or suspension red flags."}],"resultDescription":"Returns a list of all other USDOT numbers that share a contact identifier (such as phone, email, address, or EIN) with the queried carrier, along with an indicator of whether any linked carriers have a revocation or suspension record. Billed at $0.05 USDC per call whenever the USDOT number successfully resolves, even if no links are found.","failureModes":["USDOT number does not exist or cannot be resolved — billed regardless of link count","Invalid or non-integer USDOT number input returns a validation error","Network timeout on the FMCSA data source causing incomplete results","Carrier exists but has no resolvable contact identifiers — returns empty link set but still billed"],"whenToPreferThis":"Use this endpoint when you need full forensic detail about a carrier's identity network — specifically the complete list of linked USDOT numbers and their revocation/suspension status. Prefer this over the free screen_carrier_identity endpoint when a suspicious signal has already been detected and you need evidence for a compliance decision, fraud investigation, or onboarding review. Not needed when you only want a quick flag and count — use screen_carrier_identity in that case to avoid the $0.05 charge.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-14T06:35:16.756Z","isFirstParty":false,"canonicalSlug":"check-carrier-identity-71376cd9"}