Procurement agents should build the evidence before the shortlist.

What structured contracting data makes possible

The Open Contracting Data Standard models public contracting across tender, award, contract and implementation stages. It uses a shared contracting-process identifier to connect records over time, with structured fields and validation rules. This is a public-contracting data standard, not a supplier-scoring model or a private procurement policy.[1]

Choose a decision small enough to audit

A useful pilot is the comparison of already received quotes for one category of spend. Define the buyer’s required quantity, delivery location, latest acceptable date, currency, approved-vendor rule and certification requirements before reading the offers. Record which constraints are mandatory and which permit tradeoffs.

Keep each quoted number attached to its source document and page. Normalise tax, shipping and currency using an agreed calculation method. Treat an ambiguous delivery term or missing certificate as unresolved evidence. The system should say that the comparison is incomplete rather than silently penalising or guessing a value.

Separate extraction, eligibility and explanation

An extraction stage proposes structured quote fields. A validation stage checks them against documents and flags contradictions. Deterministic rules then remove offers that do not meet mandatory requirements. Only after that should a language model explain the remaining options and the tradeoffs a buyer can review.

The approval packet should show eligible suppliers, disqualifying constraints, total-cost assumptions and open questions. Preserve the original offers and the comparison version. A proposed supplier enquiry is a draft; purchase orders, supplier commitments and policy exceptions belong to the authorised procurement process. This is a hypothetical deployment design, not a delivered customer case.

What the purchasing team should test

Use historic quote sets with expired offers, mixed currencies, partial quantities, altered specifications and missing attachments. Measure field extraction accuracy and eligibility decisions separately. Track reviewer changes, time spent resolving missing information and the proportion of recommendations with complete evidence.

A pilot has earned trust when a buyer can reconstruct why an offer qualified and reproduce the cost comparison. Evaluate against your category and policy; public-contracting interoperability does not prove supplier quality, compliance or commercial savings.