Plans & Data Access¶

All Tango API plans include full access to raw federal procurement data from FPDS, SAM.gov, USAspending, Grants.gov, and agency feeds. Paid plans unlock Tango-computed enrichments and higher rate limits.

For current pricing, see the pricing page.

What's included in every plan¶

Every plan -- including Free -- provides complete access to:

• Contracts, IDVs, OTAs, OTIDVs -- all FPDS award data with full transaction history
• Vehicles -- solicitation-centric groupings of IDVs, with metrics, awardees, and task orders
• Subawards -- USAspending/FSRS subcontract data
• Entities -- SAM.gov vendor/recipient records (UEI, addresses, business types, NAICS codes, ownership)
• Opportunities & Notices -- SAM.gov solicitations with attachments, contacts, and history
• Grants -- Grants.gov opportunities
• Forecasts -- Agency procurement forecasts
• Protests -- GAO and COFC bid protest cases with dockets and decisions
• IT Dashboard -- Federal IT investment data from itdashboard.gov, including all expansion data (CIO evaluations, contracts, projects, performance metrics, funding sources). Only the full business_case_html blob is gated.
• Agencies, Departments, Offices, Organizations -- Full government organization hierarchy
• Response shaping -- Request only the fields you need via ?shape=
• Full-text search -- Rich filtering across most endpoints (some advanced search filters require a paid plan)

What paid plans add¶

Paid plans (Micro and above) unlock Tango-computed enrichments -- fields that Tango derives, resolves, or extracts from raw data. These are not available from the underlying public data sources directly.

Enriched data fields (Micro and above)¶

CALC labor rates (Micro and above)¶

The /api/lcats/ endpoint provides GSA CALC labor category rate data. This entire endpoint requires a paid plan.

Identifier validation (Micro and above)¶

The POST /api/validate/ endpoint validates the format of a PIID, solicitation number, or UEI. Available on Pro+ plans (Micro and above); Free-tier callers receive HTTP 403.

How field gating works¶

When you request a gated field on a Free plan, the API:

1. Returns a 200 OK response (not an error)
2. Omits the gated field from the response
3. Includes a meta.upgrade_hints object listing which fields were omitted

{
  "results": [
    {
      "uei": "ABC123",
      "display_name": "Example Corp"
    }
  ],
  "meta": {
    "upgrade_hints": {
      "message": "Some requested fields were omitted because they require a higher tier subscription.",
      "fields": [
        {"field": "past_performance", "required_tier": "Micro"}
      ],
      "upgrade_url": "https://tango.makegov.com/docs/pricing/"
    }
  }
}

You can always check which fields are available by inspecting the meta.upgrade_hints in your response.

Rate limits by plan¶

Each plan has both a daily quota (resets at UTC midnight) and a burst rate (per-minute). The most-restrictive window is what limits a given burst of activity. Headers (X-RateLimit-Daily-*, X-RateLimit-Burst-*) and retry guidance are documented in Rate limits.

For Enterprise limits, contact sales.

Webhook subscriptions by plan¶

Webhook subscriptions monitor resources by query filters (agency, NAICS, search terms, etc.) and POST alerts.*.match events to your endpoint. See the Webhooks guide for details.

Upgrading your plan¶

You can upgrade or downgrade at any time from the pricing page. Changes take effect immediately with prorated billing. Annual plans save 20%.

For Enterprise plans, contact sales.