{"uid":"cap_3OkPfZibUaG0a8bU5zAE6","slug":"fmcsa-carrier-census-lookup-by-usdot-number-b544fc93","name":"FMCSA Carrier Census Lookup by USDOT Number","description":"Pay-per-call company registry, government, legal and B2B data tools for AI agents, from official registers and public sources. Payment: x402, USDC on Base, Solana, Arc, Polygon, Arbitrum, Monad, World Chain, Optimism, Avalanche, Celo or Stellar, or RLUSD/XRP on the XRP Ledger. No signup, no API key; a failed call is not charged.","url":"https://api.companyrecords-api.workers.dev/api/gov/fmcsa-carrier-safety?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["dot"],"properties":{"dot":{"type":"string","description":"USDOT number, digits only, 1 to 8 digits"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"source":"https://data.transportation.gov/resource/az4n-8mr2.json","carriers":[{"city":"WISCONSIN RAPIDS","state":"WI","addDate":"19870610","dotNumber":"295043","legalName":"HAROLD DAVIS TRUCKING INC","mcs150Date":"20020318","powerUnits":14,"statusCode":"I","totalDrivers":13,"carrierOperation":"A"}],"checkedAt":"2026-10-23T09:37:04.365Z"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Zs-Yv0UjKl_nqc9FntftS","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Retrieves FMCSA carrier census record (legal name, address, power units, drivers, status, registration dates) for a given USDOT number from the public FMCSA Company Census File.","exampleAgentPrompt":"Can you pull up the FMCSA carrier census record for USDOT number 295043 — I need the legal name, address, number of power units, and whether they're currently active?","exampleUseCases":[{"title":"Carrier vetting before freight tender","prompt":"Before I award this load to a new broker's carrier, can you look up USDOT number 1847392 in FMCSA and tell me their legal name, status, and how many trucks they're running?"},{"title":"Compliance check for shipper audit","prompt":"Our compliance team needs to verify the current FMCSA status and registration dates for the carrier with USDOT 598271 — can you pull that from the census file?"},{"title":"Enriching a carrier database","prompt":"I have a list of DOT numbers and need to backfill legal names and addresses — can you start by fetching the FMCSA census record for DOT number 1023456?"}],"resultDescription":"Returns a JSON object with the data source URL, a checkedAt timestamp, and an array of carrier records each containing: DOT number, legal name, city, state, add date, MCS-150 date, power units count, total drivers, status code (e.g. 'I' for inactive, 'A' for active), and carrier operation type.","failureModes":["Invalid or non-existent USDOT number returns an empty carriers array","Non-digit characters in the DOT number field cause a validation error","USDOT numbers longer than 8 digits are rejected","Upstream data.transportation.gov outage may cause timeout or error response","Census file data may lag behind live FMCSA records for recently updated carriers"],"whenToPreferThis":"Use this endpoint when you need structured census-level data about a US motor carrier — legal name, address, fleet size, driver count, and registration status — given a USDOT number. It is ideal for carrier vetting, compliance enrichment, and database backfill. Note: this endpoint serves census file data only, not real-time inspection history, safety ratings, or crash data; for those, use FMCSA Safety Measurement System (SMS) endpoints instead.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-24T12:45:29.704Z","isFirstParty":false,"canonicalSlug":"fmcsa-carrier-census-lookup-by-usdot-number-b544fc93"}