Plumbline / Sanctions screening

Screen a name against the OFAC SDN list

Match a person or company name against the US Treasury's Specially Designated Nationals list and its aliases, with the list's publication date on every answer.

The answer appears here, with the record it came from.

Something this does not cover

Describe the lookup you need.

What it is for

Before paying, shipping to or contracting with a party, a business often must check that the party is not on the US Treasury's SDN list. This compares a name with every SDN entry and alias and returns the closest matches with their programs, so a person can review a possible hit instead of reading a 19,000-row list.

Who uses it

Exporters, payment and marketplace operators, freight forwarders and finance teams running a pre-payment or pre-shipment check, and agents doing it for them.

What you get

A JSON answer with the matches (OFAC entry number, listed name or alias, score, type, programs), the list publication date and the time the copy was fetched.

Who runs it, and what it costs

Plumbline. Operated by Tempered Technologies LLC, 8 The Green STE B, Dover, DE 19901. Privacy questions and deletion requests: privacy@forevenza.com. Privacy notice.

Free to use within a daily allowance; sending a requirement is free.

Scope

The US OFAC SDN list only; it applies to US persons and transactions with a US nexus.

Not a compliance determination: a reviewer must confirm or dismiss any match.
Other lists (EU, UK, UN, OFAC non-SDN consolidated lists) are not screened.
Matching is on names only; dates of birth, addresses and identifiers are not compared.

Sources

OFAC publishes the SDN list and its aliases as downloadable files. sanctionslistservice.ofac.treas.gov

For developers and agents

Send the same requirement as JSON to POST /sanctions-screening/requests (schema: /sanctions-screening/schema.json), or call the submit_request tool on the MCP endpoint at https://plumbline.forevenza.com/mcp. This page as Markdown: index.md.

{
  "action": "verify",
  "need": "Check Banco Nacional de Cuba against sanctions lists before we accept a wire.",
  "specifications": {
    "party_name": "Banco Nacional de Cuba",
    "party_type": "organization",
    "lists_required": [
      "OFAC SDN"
    ]
  }
}

`GET /sanctions-screening/op/screen`

SDN entries and aliases whose normalized name is similar to the given name, with scores, programs and the list publication date. Free, within a daily allowance.

Parameter	Type	Meaning
`name` (required)	string	Name to screen
`min_score`	number	Similarity floor, default 0.82

Example answer:

{
  "query": "Banco Nacional de Cuba",
  "matches": [
    {
      "ofac_uid": "306",
      "listed_name": "BANCO NACIONAL DE CUBA",
      "score": 1,
      "type": "organization",
      "programs": "CUBA",
      "list": "SDN"
    }
  ],
  "publication": "2026-10-27",
  "fetched_at": "2026-11-03T06:17:00Z",
  "note": "A match is a lead for review, not a sanctions determination."
}

Sources: OFAC Sanctions List Service, SDN.CSV and ALT.CSV (US government work, public). Limits: names up to 200 characters; at most 20 matches per answer.