AbiertoUS federal contracting, open to read
Every federal contract opportunity, open to read
Every contract opportunity the US federal government publishes on SAM.gov, joined to the awards USAspending records — who is buying, who is winning, what it cost and when offers are due. Free to read, free to cite, no account required.
- Sector
- Open Data / US Federal Procurement
- Client
- Public release · Federal vendors, analysts and AI agents
- Deployed
- 2026 // en-US
Access Vectors // Live Endpoints
From 116K+ SAM.gov notices, grouped by solicitation
USAspending records matched on PIID and solicitation number
Across 32.5K+ vendors and 87 departments and agencies
01 // The Brief
US federal procurement is public, but it is not readable. Opportunities live on SAM.gov, awards live on USAspending.gov, and nothing joins the two. SAM.gov issues a new notice id for every revision, so a single solicitation surfaces as five or six unrelated rows, and the award it eventually produced sits in a different system under a different identifier.
Abierto rebuilds that record as one object. It reads the public bulk extracts rather than the websites, groups every notice that shares a solicitation number — sources sought, presolicitation, solicitation, amendments, award notice — and merges the groups that USAspending links to the same award. Matching runs on identifiers only, the contract PIID or the solicitation number, never on names, so a joined record is a fact rather than a guess.
Every agency, sub-agency, contracting office, vendor, NAICS industry, product or service code, set-aside program and state gets its own stable, citable URL. Each page has .md and .json twins at the same address, content negotiation works on the canonical URL, and the whole index ships with an Atom feed, sharded sitemaps with real lastmod dates and an llms.txt that documents the URL grammar. It is built for people and for AI agents alike.
Abierto is the US counterpart to LicitIA Abierto, the open index of Mexican public procurement we publish alongside LicitIA. Same conviction on both sides of the border: public spending records belong to the public, in a form anyone can actually read.
02 // What We Built
Opportunities joined to awards
SAM.gov notices grouped into one opportunity per solicitation and linked to the USAspending award on identifiers alone — contract number or solicitation number, never a fuzzy name match.
A citable URL for every entity
Departments, sub-agencies, contracting offices, vendors by UEI, NAICS codes at any depth, PSC codes, set-aside programs and places of performance. Stale slugs redirect permanently to the current one.
Machine-readable by default
.md and .json twins of every page, content negotiation on the canonical URL, an Atom feed of new opportunities and an llms.txt that documents the full URL grammar for AI agents.
Small-business set-aside filtering
SBA, 8(a), HUBZone, SDVOSB, WOSB and EDWOSB programs broken out with live counts, filterable by state, department and NAICS industry.
Deadline-first discovery
Solicitations, presolicitations and sources sought ordered by the nearest response deadline, with the explicit caveat to confirm on SAM.gov because agencies amend dates.
Honest about its limits
A public data page states exactly what is covered, what is not — bidders, attachments, state and local buying — and how complete each field is, down to the percentage.
03 // Stack
Want one of these for your operation?
Abierto started as a brief on a call. Tell us what you need traced, automated or rebuilt, and we will scope it.