The API for U.S. government contracting data.

Tango unifies SAM.gov, USAspending, FPDS, DSBS, GSA eLibrary, Grants.gov, GAO bid protests, and agency forecasts behind a single API key. Built for developers, priced for builders.

Get a Tango API key (opens in new tab) Add to ChatGPT (opens in new tab) Add to Claude (opens in new tab)

One click, no API key — how the MCP connector works.
Or read the docs (opens in new tab); everything above works from any language.

One key. Every federal source. Real data.

Three lines of Python, one shaped response.

No scraping. No ID stitching. No agency-acronym memorization. Tango normalizes the federal procurement stack into one consistent surface — and lets you shape responses to exactly the fields you need.

from tango import Tango
t = Tango()
opps = t.search_opportunities(
    org="75FCMC",
    active=True,
    shape="solicitation_identifier,title,naics,response_deadline",
)

Stop stitching broken data sources together.

Federal procurement data lives in different systems with different schemas that never quite work together. Tango is built by govcon experts and software developers who already paid that tax — so you don't have to.

One schema across a dozen federal systems.

Every source is modeled and joined the way people actually want it, with real entity resolution across UEIs, DUNS, and USAspending keys — so a company is one company, not four records that happen to share a name.

  • Contracts, IDVs & vehicles — FPDS lineage preserved; eLibrary schedules and OTA ceilings attached
  • Opportunities — modeled as opportunities, not raw notices
  • Entities — UEI + DUNS resolution, with DSBS capabilities and principals
  • Subawards, grants & protests — USAspending sub-awards, Grants.gov, GAO bid protests
  • Forecasts & federal hierarchy — agency forecasts, IT Dashboard, and every office in the federal tree

Refreshed on a cadence that matches the source.

Opportunities flow into Tango every 20–60 minutes. Contracts and IDVs refresh twice daily. Subawards daily. Subscribe to webhooks for awards, opportunities, entities, grants, and forecasts so your capture pipeline sees changes when they happen.

From our customers

“Federal procurement data is a lot messier than people expect: it’s scattered across clunky government systems, the same company shows up under five different names, and the award record often undersells what a firm actually does. Tango does a really good job of parsing and organizing all of it into something I can actually trust and use. I pair it with Claude to unpack large RFIs and RFPs, build and validate pipeline, and sharpen my competitive intelligence, and it saves me at least 25% of the time I’d otherwise spend on that work.”

Josh Cohen VP, Enterprise Transformation, Oddball

“Tango is built by some of the premier experts in government contracting, and the quality of their data sources proves it. Clean APIs and a real developer experience make it straightforward to build AI and GovCon workflows on solid footing. There’s a lot of GovCon data slop out there. This isn’t it.”

Ron Jones CEO, G2X

“Tango has been an incredible add to our tech stack! Getting all this data from one source is a huge time saver. Now that we’ve been using it for a year our team depends on it. And they just keep adding to the functionality…making the future feel very bright.”

Christy Mee CEO, Capture411

From the blog

From a SAM.gov Opportunity to the Federal Register in One Query

Every SAM.gov opportunity carries an agency code, and the Federal Register has never heard of it. Tango lets you search the Federal Register with the code you already have, so you can see the rules an agency is writing next to what it is buying.

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New in Tango: State and Local Bids, the Federal Register, Contract Appeals, and More

In August and September Tango added state and local solicitations, the Federal Register back to 1994, CBCA and ASBCA contract appeal decisions, GSA eBuy requests, Court of Federal Claims protests from PACER, Education and SEC forecasts, SBA Mentor-Protégé relationships, and employee counts and hiring footprints for companies, all behind the same API.

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