Data Dictionary¶

Tango's Data Dictionary documents the fields you can expect on key resources and what they mean.

If you're looking for how to query/filter/order endpoints, see the API Reference.

Awards¶

Definitive contracts, indefinite-delivery vehicles, other transactions, subawards, and solicitation-level groupings.

Contracts — Definitive contract awards (materialized from FPDS and USAspending inputs). Response shaping →
IDVs — Indefinite delivery vehicles (GWACs, IDIQs, etc.). Response shaping →
OTAs — Other Transaction Agreements from FPDS. Response shaping →
OTIDVs — Other Transaction IDVs from FPDS. Response shaping →
Subawards — Sub-contracts and sub-grants under prime awards; sourced from USAspending/FSRS. Response shaping →
Vehicles — Solicitation-centric grouping of IDVs. Response shaping →
GSA eLibrary contracts — Persisted GSA eLibrary contract metadata.

Entities — Vendors and recipients in federal contracting and assistance; UEI is the canonical identifier (from SAM.gov). Response shaping →

Forecasts — Upcoming procurement opportunities from agency feeds (e.g., HHS, DHS) before they appear as SAM.gov solicitations. Response shaping →

Grants — Grant opportunities from Grants.gov (funding opportunities, not assistance transactions). Response shaping →

IT Dashboard — Federal IT investment records from itdashboard.gov, keyed by Unique Investment Identifier (UII). Response shaping →

SAM.gov contract opportunity and notice data.

Opportunities — Contract opportunities aggregated by parent. Response shaping →
Notices — Individual SAM.gov notice records (amendments, updates) under an opportunity. Response shaping →

Lookup tables and codes used across awards and entities.

Assistance listings (CFDA) — CFDA program numbers and titles for federal grants/assistance. Response shaping →
Business types — SAM.gov business type codes (e.g., small business, 8(a), HUBZone). Response shaping →
MAS SINs — MAS Special Item Numbers (SINs) reference data. Response shaping →
NAICS — North American Industry Classification System codes. Response shaping →
Organizations — Unified federal hierarchy (departments, agencies, offices in one tree). Response shaping →
PSC — Product/Service Codes for federal contracting. Response shaping →

Data structures shared across multiple endpoints via response shaping expands.

Set-aside codes — Set-aside type codes and descriptions.
Agencies — Agency fields and expansions as they appear in shaped responses. Response shaping →
Departments — Department fields as they appear in shaped responses. Response shaping →
Offices — Office fields, flat aliases, and expansions as they appear in shaped responses. Response shaping →