{
  "api_version": "2026-08-01",
  "data": [
    {
      "id": "gsa-per-diem-v2",
      "name": "GSA Per Diem API v2",
      "authority": "U.S. General Services Administration",
      "authority_url": "https://www.gsa.gov/travel/plan-book/per-diem-rates",
      "documentation_url": "https://open.gsa.gov/api/perdiem/",
      "jurisdiction": "US-CONUS",
      "data_types": [
        "per_diem"
      ],
      "access_method": "rest_api",
      "priority": 1,
      "trust_tier": "authoritative",
      "connector_status": "ready",
      "evidence_policy": "archive_every_upstream_response",
      "notes": "Requires an api.data.gov key. The upstream default limit is 1,000 requests per hour."
    },
    {
      "id": "irs-standard-mileage",
      "name": "IRS Standard Mileage Rates",
      "authority": "Internal Revenue Service",
      "authority_url": "https://www.irs.gov/tax-professionals/standard-mileage-rates",
      "documentation_url": "https://www.irs.gov/tax-professionals/standard-mileage-rates",
      "jurisdiction": "US",
      "data_types": [
        "mileage"
      ],
      "access_method": "official_publication",
      "priority": 3,
      "trust_tier": "authoritative",
      "connector_status": "seeded_verified",
      "evidence_policy": "archive_publication_and_notice",
      "notes": "No official rate API was identified. Records are effective-dated from IRS publications."
    },
    {
      "id": "dos-foreign-per-diem",
      "name": "Department of State Foreign Per Diem",
      "authority": "U.S. Department of State, Office of Allowances",
      "authority_url": "https://allowances.state.gov/web920/per_diem.asp",
      "documentation_url": "https://allowances.state.gov/Web920/allowance.asp?menu_id=95",
      "jurisdiction": "GLOBAL-FOREIGN",
      "data_types": [
        "per_diem"
      ],
      "access_method": "official_structured_file",
      "priority": 2,
      "trust_tier": "authoritative",
      "connector_status": "planned",
      "evidence_policy": "archive_each_publication",
      "notes": "The official spreadsheet is the canonical acquisition artifact. HTML is limited to manual comparison and the operator-facing source link."
    },
    {
      "id": "dtmo-oconus-per-diem",
      "name": "DTMO OCONUS Per Diem",
      "authority": "U.S. Defense Travel Management Office",
      "authority_url": "https://www.travel.dod.mil/Travel-Transportation-Rates/Per-Diem/",
      "documentation_url": "https://www.travel.dod.mil/Travel-Transportation-Rates/Per-Diem/",
      "jurisdiction": "US-OCONUS",
      "data_types": [
        "per_diem",
        "meal_rate"
      ],
      "access_method": "official_structured_file",
      "priority": 2,
      "trust_tier": "authoritative",
      "connector_status": "planned",
      "evidence_policy": "archive_each_publication",
      "notes": "The official spreadsheet is preferred; the companion PDF is retained as human-readable evidence."
    },
    {
      "id": "eu-tedb-vat",
      "name": "EU Taxes in Europe Database VAT Service",
      "authority": "European Commission, DG TAXUD",
      "authority_url": "https://ec.europa.eu/taxation_customs/tedb/index.html",
      "documentation_url": "https://taxation-customs.ec.europa.eu/system/files/2021-06/soap_webservice_documentation.pdf",
      "jurisdiction": "EU",
      "data_types": [
        "tax"
      ],
      "access_method": "soap_api",
      "priority": 1,
      "trust_tier": "authoritative",
      "connector_status": "ready",
      "evidence_policy": "archive_every_upstream_response",
      "notes": "Official SOAP service supports date, member state, category, CN code, and CPA code criteria."
    },
    {
      "id": "uk-trade-tariff",
      "name": "GOV.UK Trade Tariff API",
      "authority": "HM Revenue & Customs",
      "authority_url": "https://www.trade-tariff.service.gov.uk/uk/api",
      "documentation_url": "https://www.api.gov.uk/hmrc/gov-uk-trade-tariff-api/",
      "jurisdiction": "GB",
      "data_types": [
        "tax",
        "customs_duty"
      ],
      "access_method": "rest_api",
      "priority": 1,
      "trust_tier": "authoritative",
      "connector_status": "researched",
      "evidence_policy": "archive_every_upstream_response",
      "notes": "Official JSON API includes commodity codes, customs duties, and applicable VAT measures."
    }
  ],
  "meta": {
    "request_id": "a692419e-690e-48c0-ad10-187772ca6cc0",
    "retrieved_at": "2026-08-07T04:38:34.329Z",
    "count": 6
  }
}