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Treasury Opportunity Zones API and MCP server

No authtreasury-qoz

Official tract-level QOZ evidence from the complete 2018 CDFI designation list and separately identified Treasury nomination files.

Treasury Opportunity Zones is published by U.S. Treasury and CDFI Fund Qualified Opportunity Zone files and covers United States and territories represented in each official QOZ table.

It refreshes on a schedule the publisher sets.

Last verified . That is when these facts were last rebuilt from the ParcelOps source registry, not when U.S. Treasury and CDFI Fund Qualified Opportunity Zone files last refreshed the data itself.

treasuryqualified-opportunity-zonetaxtractdevelopmentfinancing

API access

Your AI client reaches Treasury Opportunity Zones through one ParcelOps MCP endpoint, so there is no separate key to hold for it and no per-source client to write. Reaching it takes no credentials of your own.

Set up Treasury Opportunity Zones in Claude, ChatGPT, or CursorGet every fact on this page as JSON

Where it came from

PublisherU.S. Treasury and CDFI Fund Qualified Opportunity Zone files
Sourcehttps://www.cdfifund.gov/system/files/documents/designated-qozs.12.14.18.xlsx
API basehttps://home.treasury.gov/policy-issues/tax-policy/data-transparency/qualified-opportunity-zones
Docshttps://www.cdfifund.gov/opportunity-zones

Freshness and coverage

FreshnessScheduled · ParcelOps pins the complete final 2018 designation list and discovers current-cycle nomination workbooks separately.
Places coveredUnited States and territories represented in each official QOZ table
Time coveredNot declared
CredentialsNo credentials required

What this source cannot tell you

  • ⚠ Anything outside United States and territories represented in each official QOZ table. A request past that edge comes back empty rather than approximated.
  • ⚠ Which years it spans, because the covered period is not declared.
  • ⚠ Anything U.S. Treasury and CDFI Fund Qualified Opportunity Zone files does not publish. ParcelOps returns this source as it stands and never fills a blank field from a different one.
  • ⚠ A published tract match is designation evidence, not tax advice, a calculation of gain deferral, or confirmation that a project or taxpayer qualifies.
  • ⚠ A 2018 designation zero-match is checked against the complete official 8,764-tract CDFI list using 2010 Census tract boundaries.
  • ⚠ The 2018 designation round and 2027 nomination cycle are separate datasets and are never merged into one status.
  • ⚠ Confirm the relevant notice, tract-boundary vintage, effective period, parcel geography, and transaction facts.

Methods (3)

A method is one call your agent can make against this source.

  • listDesignationFiles

    read

    List supported official QOZ designation and nomination workbooks.

    Records returnedqoz-data-file
    How to get more resultsoffset (offsetField: offset, limitField: limit)
    FreshnessScheduled (source-level)
    Input schema
    {
  "type": "object",
  "properties": {
    "limit": {
      "type": "integer",
      "minimum": 1,
      "maximum": 100
    },
    "offset": {
      "type": "integer",
      "minimum": 0,
      "maximum": 50000
    }
  },
  "required": [],
  "additionalProperties": false
}

  • checkTract

    read

    Check one tract against the complete 2018 list or a requested nomination vintage.

    What you must providetractGeoid
    Records returnedqualified-opportunity-zone-tract
    How to get more resultsoffset (offsetField: offset, limitField: limit)
    FreshnessScheduled (source-level)
    Input schema
    {
  "type": "object",
  "properties": {
    "tractGeoid": {
      "type": "string",
      "pattern": "^\\d{11}$"
    },
    "status": {
      "type": "string",
      "enum": [
        "designated",
        "nominated"
      ]
    },
    "vintage": {
      "type": "integer",
      "minimum": 2010,
      "maximum": 2100
    },
    "limit": {
      "type": "integer",
      "minimum": 1,
      "maximum": 100
    },
    "offset": {
      "type": "integer",
      "minimum": 0,
      "maximum": 50000
    }
  },
  "required": [
    "tractGeoid"
  ],
  "additionalProperties": false
}
    • ⚠ Designation evidence only; not tax or investment advice.
    • ⚠ The complete 2018 designation list uses 2010 Census tract boundaries; later GEOIDs must be reconciled to that vintage.
    • ⚠ Nomination-cycle zero-matches apply only to the named nomination file.

  • getServiceInfo

    read

    Return files, vintages, designation semantics, and tax-use limitations.

    FreshnessScheduled (source-level)
    Input schema
    {
  "type": "object",
  "properties": {},
  "required": [],
  "additionalProperties": false
}

Where this source is used