MCP Server
FMCSA Carrier Intelligence
io.github.KMCTO/fmcsa-carrier-intelligence
What this MCP does
Provides FMCSA carrier profiles, safety histories, authority data, filtered searches, and identity-linkage screening for motor-carrier due diligence.
Capabilities
Tools
11
tools
check_address_consistency
How many distinct business addresses and phones this carrier
reports across FMCSA's independent records of it (census
registration, licensing and insurance filings, and its own
self-reported crash records). Mailing addresses are excluded â
differing from the physical address there is normal.
Paid. Cheaper than either identity tool; one row, no graph.
Input schema
{'type': 'object', 'title': 'check_address_consistencyArguments', 'required': ['usdot_number'], 'properties': {'usdot_number': {'type': 'integer', 'title': 'Usdot Number'}}}
check_applicant_against_roster
Screens one applicant carrier against a roster of carriers you
already do business with (or are vetting) â the batch generalization
of confirm_identity_link, for the real-world case of catching a
carrier that was previously cut from your network (revoked,
suspended, or otherwise let go) trying to re-enter under a new USDOT
number. usdot_number is the applicant; roster_usdot_numbers is your
own list, supplied by you.
Returns linked (true if the applicant shares an identity cluster with
ANY roster member) and matched_roster_usdot_numbers (which ones,
always a subset of what you supplied â never a carrier you didn't
already name). roster_not_found lists any roster entries that simply
don't resolve to a known carrier (still your own input, not a new
disclosure). usdot_number's own cluster_id is always included, same
as check_carrier_identity's convention â it's the applicant's own
data, not something withheld pending a match.
usdot_number must not also appear in roster_usdot_numbers, and
roster_usdot_numbers must be a non-empty list of at most
settings.roster_screen_max_size distinct entries (currently 100) â
either violation is a free invalid_arguments; split a larger roster
into multiple calls rather than expecting it to be truncated for you.
An unresolved usdot_number (the applicant itself) is a free not_found,
same as confirm_identity_link/check_carrier_identity.
Paid, metered: price = price_check_applicant_against_roster_base +
price_check_applicant_against_roster_per_entry * (the deduped roster
size) â see get_catalog for current rates. A "not linked to anything
on your roster" result is a complete, valuable answer and bills the
same as a match, same reasoning as check_carrier_identity's
cluster_size == 1.
Input schema
{'type': 'object', 'title': 'check_applicant_against_rosterArguments', 'required': ['usdot_number', 'roster_usdot_numbers'], 'properties': {'usdot_number': {'type': 'integer', 'title': 'Usdot Number'}, 'roster_usdot_numbers': {'type': 'array', 'items': {'type': 'integer'}, 'title': 'Roster Usdot Numbers'}}}
check_carrier_identity
Full identity-linkage detail for a carrier: why it's flagged and how
confident that is. Priced meaningfully above the free
screen_carrier_identity â call that first if you only need the flag
and a count.
Never names or points at another carrier (redesigned 2026-09-18 â see
schemas.IdentityAssessment's docstring): no linked USDOT number, legal
name, or shared-identifier hash. A linked carrier's own identity was
never this caller's to receive, and an unsalted hash of a low-entropy
value like a phone number or address doesn't meaningfully withhold it
from a determined party anyway (confirmed by reading Truckin's own
hashing code). Every field here is either the subject carrier's own
data or a derivative signal â a score, a match-term-type label
(which *kind* of identifier matched, never the value), a count, a
boolean.
SSN and EIN matches carry weight 2.0 each in FMCSA's ARCHI methodology
and are not present in public data; D&B is nominally weight 2.0 too
but is only genuinely available for ~4% of carriers, and officer data
(needed for the name x officer term) is missing for another ~15%. So
score_provenance.match_score_ceiling is computed per carrier, not a
flat 4.5 â most responses cap out at 2.5 or lower. It also states
plainly that recall against FMCSA's own declared-predecessor label
set is not measurable. flagged applies FMCSA's own ARCHI flag rule
(match_score >= 1.5 AND a linked motive >= 1); it is not a fraud
determination and must not be presented as one. Note flagged and
match_score >= 1.5 are NOT the same condition â clustering requires
2+ independent identifier-type families to agree, so materially more
carriers clear the score threshold than are ever flagged.
Paid. A carrier with no linked carriers is a complete answer and
bills; an unknown USDOT number is a free not_found.
Input schema
{'type': 'object', 'title': 'check_carrier_identityArguments', 'required': ['usdot_number'], 'properties': {'usdot_number': {'type': 'integer', 'title': 'Usdot Number'}}}
confirm_identity_link
Confirms or denies that two carriers YOU ALREADY SUSPECT are linked
in fact share an identity cluster â the lower-risk alternative to
check_carrier_identity's removed linked_carriers field (see
schemas.IdentityAssessment's docstring for why that was removed
2026-09-18).
This never discloses a carrier's identity to a caller who didn't
already have it: both usdot_number_a and usdot_number_b are supplied
by you. It only ever answers "do these two specific carriers share a
cluster?", never "who is linked to this carrier?" â call
check_carrier_identity for that, which stops at a score and a count
for exactly this reason. cluster_id is returned only when linked is
true, and isn't new information even then â you could obtain the same
value directly from either carrier's own check_carrier_identity or
screen_carrier_identity response.
usdot_number_a and usdot_number_b must differ (invalid_arguments,
free â there is no comparison to make). Either number failing to
resolve in carrier_identity_cluster is a free not_found, same as
check_carrier_identity.
Paid â pricier than check_carrier_identity, since it resolves two
carriers' clusters per call, not one. A "not linked" result is a
complete, valuable answer and bills the same as "linked", same
reasoning as check_carrier_identity's cluster_size == 1.
Input schema
{'type': 'object', 'title': 'confirm_identity_linkArguments', 'required': ['usdot_number_a', 'usdot_number_b'], 'properties': {'usdot_number_a': {'type': 'integer', 'title': 'Usdot Number A'}, 'usdot_number_b': {'type': 'integer', 'title': 'Usdot Number B'}}}
get_catalog
Free, unauthenticated dataset catalog.
Describes every table this service sells, its fields, current pricing,
and freshness. Read this before paying for anything.
Input schema
{'type': 'object', 'title': 'get_catalogArguments', 'properties': {}}
get_identity_sample
Free, unauthenticated sample of identity/fraud responses, covering
both screen_carrier_identity's free IdentityScreen shape and
check_carrier_identity's paid IdentityAssessment shape.
Lets a buying agent see the paid response shape and evaluate data
quality before spending USDC on check_carrier_identity.
Input schema
{'type': 'object', 'title': 'get_identity_sampleArguments', 'properties': {}}
get_safety_history
Historical snapshots and changelog entries for a carrier. Paid â
you pay only when a call returns records; an exact-key miss is free.
changelog may legitimately be empty for a carrier without two
distinct-date snapshots yet â a diff needs both. authority_types,
oos_orders_active, insurance_bipd_on_file, insurance_cargo_on_file,
insurance_bond_on_file, has_been_revoked, and last_revocation_date are
null (not false/empty) on a history row recorded before 2026-09-02 â
carrier_history wasn't tracking those fields yet, so null there means
"not tracked on this date," not a negative answer. Likewise
has_been_suspended/last_suspension_date are null before 2026-09-06,
and has_authority_reinstated/last_reinstatement_date/
has_insurance_identity_mismatch are null before 2026-09-12. Carries no
contact information (legal_name, dba_name, addresses, phone, email â
removed 2026-09-19, see schemas.CarrierProfile); changelog excludes
field_name in {legal_name, dba_name, phone, email} for the same reason
â a changed value is still the value.
Input schema
{'type': 'object', 'title': 'get_safety_historyArguments', 'required': ['usdot_number'], 'properties': {'since_date': {'anyOf': [{'type': 'string', 'format': 'date'}, {'type': 'null'}], 'title': 'Since Date', 'default': None}, 'usdot_number': {'type': 'integer', 'title': 'Usdot Number'}}}
get_sample
Free, unauthenticated sample of carrier_profile rows.
Lets a buying agent evaluate data quality before spending USDC on the
paid tools.
Input schema
{'type': 'object', 'title': 'get_sampleArguments', 'properties': {}}
lookup_carrier
Look up a single carrier's current profile by USDOT number. Paid â
you pay only when a call returns records; an exact-key miss is free.
Returns every carrier_status (Active, Inactive, Pending) â check the
carrier_status field, don't assume Active.
Carries no contact information (legal_name, dba_name, addresses,
phone, email â removed 2026-09-19, see schemas.CarrierProfile). The one
legitimate use those fields served â confirming a carrier's claimed
identity against records, e.g. to catch a carrier-identity-theft
("double brokering") attempt â is available instead via claimed_name
(matched against legal_name OR dba_name) and claimed_street/
claimed_city/claimed_state/claimed_zip (matched against
physical_address; supply any subset). Returns name_match/
physical_address_match as a boolean per claim actually supplied, `null`
for a claim not supplied â never the value on file itself.
Input schema
{'type': 'object', 'title': 'lookup_carrierArguments', 'required': ['usdot_number'], 'properties': {'claimed_zip': {'anyOf': [{'type': 'string'}, {'type': 'null'}], 'title': 'Claimed Zip', 'default': None}, 'claimed_city': {'anyOf': [{'type': 'string'}, {'type': 'null'}], 'title': 'Claimed City', 'default': None}, 'claimed_name': {'anyOf': [{'type': 'string'}, {'type': 'null'}], 'title': 'Claimed Name', 'default': None}, 'usdot_number': {'type': 'integer', 'title': 'Usdot Number'}, 'claimed_state': {'anyOf': [{'type': 'string'}, {'type': 'null'}], 'title': 'Claimed State', 'default': None}, 'claimed_street': {'anyOf': [{'type': 'string'}, {'type': 'null'}], 'title': 'Claimed Street', 'default': None}}}
screen_carrier_identity
Free triage screen for a carrier: whether it's flagged under FMCSA's
own chameleon-carrier methodology, how big its identity cluster is,
and how many linked carriers carry a motive â with no member detail.
Call check_carrier_identity (paid) for that.
This is the entire discovery/sales motion in an agent-only channel,
not a discount tier â free by design (Identity-API-Revision-
2026-09-06.md Section 1), so it never bills and never requires
payment. By the same design, it withholds anything that identifies a
linked carrier: no member USDOT number, no legal name, no link type,
no identifier hash. A caller learns THAT there is something to look
at here, not WHAT.
confidence_caveat discloses the known ~6% artifact rate and that
recall is not measurable in FMCSA's public data â read it, don't just
check the flagged boolean. match_score_practical_ceiling is computed
per carrier from which ARCHI terms were actually available for it,
not a flat constant â most carriers cap out well below the
theoretical 8.5.
An unknown USDOT number returns a not_found error.
Input schema
{'type': 'object', 'title': 'screen_carrier_identityArguments', 'required': ['usdot_number'], 'properties': {'usdot_number': {'type': 'integer', 'title': 'Usdot Number'}}}
search_carriers
Filtered carrier search. Paid â you pay only when a call returns
records; a zero-row result is free, same as an exact-key miss.
Defaults to Active carriers only â pass include_inactive=true to also
see Inactive/Pending. Capped at 100 rows per response regardless of the
requested limit; never a full-table dump. Carries no contact
information (legal_name, dba_name, addresses, phone, email â removed
2026-09-19, see schemas.CarrierProfile) â a filterable, multi-result
endpoint returning personal contact details for whoever matched a
filter was the sharpest version of that risk in this product; use
lookup_carrier's claimed_name/claimed_street/etc. if you need to
confirm a specific carrier's claimed identity.
Input schema
{'type': 'object', 'title': 'search_carriersArguments', 'properties': {'limit': {'type': 'integer', 'title': 'Limit', 'default': 20}, 'state': {'anyOf': [{'type': 'string'}, {'type': 'null'}], 'title': 'State', 'default': None}, 'cargo_type': {'anyOf': [{'type': 'string'}, {'type': 'null'}], 'title': 'Cargo Type', 'default': None}, 'safety_tier': {'anyOf': [{'type': 'integer'}, {'type': 'null'}], 'title': 'Safety Tier', 'default': None}, 'authority_status': {'anyOf': [{'type': 'string'}, {'type': 'null'}], 'title': 'Authority Status', 'default': None}, 'include_inactive': {'type': 'boolean', 'title': 'Include Inactive', 'default': False}}}
History
Recent tool changes
Added
get_identity_sample
Oct. 4, 2026, 2:40 a.m.
Added
check_applicant_against_roster
Oct. 4, 2026, 2:40 a.m.
Added
confirm_identity_link
Oct. 4, 2026, 2:40 a.m.
Added
check_address_consistency
Oct. 4, 2026, 2:40 a.m.
Added
check_carrier_identity
Oct. 4, 2026, 2:40 a.m.
Added
screen_carrier_identity
Oct. 4, 2026, 2:40 a.m.
Added
get_safety_history
Oct. 4, 2026, 2:40 a.m.
Added
search_carriers
Oct. 4, 2026, 2:40 a.m.
Added
lookup_carrier
Oct. 4, 2026, 2:40 a.m.
Added
get_sample
Oct. 4, 2026, 2:40 a.m.
Added
get_catalog
Oct. 4, 2026, 2:40 a.m.
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