The eight federal data sources, the identity-resolution step that anchors every audit, the deterministic verdict ladder, and the sector-risk overlay. Every other page in this library feeds the verdict it documents. Read this first if you are new.
Workflow + methodology
Start here to understand how DiligenceDesk reads federal data and what a diligence workflow looks like end to end.
User Guide
How to run a unified audit and interpret the verdict.
Methodology
The eight federal data sources, identity resolution, the verdict ladder, and the sector-risk overlay.
Pre-Award Diligence Checklist
A repeatable six-step workflow for procurement teams and primes vetting subs.
FAR 9.104 Responsibility Determination
The six general standards a CO must affirmatively find before award, the FAR 9.105 information sources, and the evidence map tying every reference page to one or more standards.
SAM.gov + entity records
The SAM.gov record family: registration, identifiers, exclusions, and the rebranded FAPIIS responsibility records.
SAM.gov Check
How SAM.gov entity registration works, what UEI/CAGE/EIN actually mean, and how to interpret status fields.
CAGE Code Lookup
Format spec, NCAGE differences, multi-location rules under FAR 52.204-16, and lifecycle.
SAM Exclusion Records, Field by Field
The four Exclusion Types that replaced 70+ EPLS Cause and Treatment codes, "Indefinite" termination, scope, and the FAR 9.405(a) compelling-reason exception.
FAPIIS Lookup, After the SAM.gov Migration
Where FAPIIS went after the December 2022 migration, what Responsibility/Qualification (R/Q) records contain, and the 14-day public-posting rule.
Section 889 + DOD compliance
The two compliance regimes that hit DOD primes hardest: Section 889 prohibited hardware and CMMC.
Section 889 Hardware Check
The five named manufacturers, Part A vs Part B, exemptions, and how to screen for prohibited hardware.
FAR 52.204-25 Walkthrough
The clause text, the 24/25/26 tripartite, FAR 4.21 implementing rules, and flow-down to commercial-item subcontracts.
CMMC Verification for Primes
How a prime verifies a sub's CMMC level via SPRS and C3PAO certificates before award. Phase 2 starts November 10, 2026.
SPRS and CMMC Status Lookup
How SPRS works, the Basic / Medium / High DFARS assessment levels, the November 10 2025 DFARS final rule, and the verification gap that prevents primes from looking up a sub directly.
Labor + safety enforcement
DOL Wage and Hour and OSHA enforcement records: how to read them, what counts as a willful violation, and where the dataset is silent.
DOL Wage and Hour Search
Step-by-step on data.dol.gov plus the V4 API, with field-by-field interpretation of penalties and willfulness signals.
OSHA Inspection Record Guide
Citation severity definitions, current penalty maximums, and a procurement-side framework for reading an enforcement record.
Davis-Bacon Wage Determination Lookup
How to look up a Davis-Bacon Act wage determination on sam.gov, the four construction types, the locality rule, and the 2023 prevailing-wage methodology shift.
Sanctions + federal performance
The screening lists and award databases that make up the procurement-side picture beyond entity registration.
Consolidated Screening List Guide
All fourteen source lists in the ITA CSL, severity tiers from DPL down to UVL, and what CSL deliberately does not cover.
USAspending Recipient Lookup
How to look up a contractor's federal award history through the UI and the spending_by_award API. The obligated vs outlayed distinction grounded in OMB Circular A-11.
GAO Bid Protest Lookup
What a GAO protest is, the 10-day filing window under 4 CFR 21.2 (not 30, despite what most online sources claim), and how to read protest history as a vendor diligence signal.
Small business and set-aside verification
NAICS classification, SBA size standards, and the four set-aside certification programs primes verify before subcontract award.
NAICS Code and SBA Size Standard Lookup
How NAICS pairs with SBA size standards under FAR 19.102, and the 13 CFR 121.103 affiliate-aggregation rule that catches most small-business size disqualifications.
SBA Certification Verification
8(a), HUBZone, WOSB/EDWOSB, and VOSB/SDVOSB certifications all live in the unified MySBA Certifications portal. The verification path procurement officers use before relying on a set-aside award.
SBA Small Business Search (SBS) Lookup
How SBS replaced DSBS in summer 2025 at search.certifications.sba.gov, the search filters that matter, and how to use SBS in the discovery half of pre-award diligence.
Foreign vendors and ownership chains
The LEI and GLEIF parent-chain data layer that procurement officers use when a vendor or its parent is a foreign legal entity.
Pages currently in research and queued to publish: a Service Contract Act prevailing-wage walkthrough, an E-Verify federal contractor verification page, an SBA mentor-protege joint-venture verification page, a FAR 52.219-14 limitations-on-subcontracting explainer, and a post-FSRS subaward reporting walkthrough. If a topic should be on this list and is not, the contact link in the footer reaches us.