# Audit and control outcome-priced software spend | Spoolis for buyers Canonical HTML: https://spoolis.com/buyers. This page is also available in machine-readable Markdown. Control what you pay for outcomes: audit outcome-priced invoices against your own rules and records with Outcome Spend and the free invoice audit, resolve discrepancies with evidence, and pay on verified results. ## The problem Audit outcome-priced invoices against your own rules and records, resolve discrepancies with evidence, and know what should actually be payable. The audit works even when your vendor is not on Spoolis. ## How it works Put the definition in writing before the work starts. 92 of 100 reads as 92, and what cannot be verified stays uncertain instead of quietly passing. Match each billed line to the accepted record. Differences come back as questions your vendor can answer with evidence, not accusations. Approve the payable amount from the record. Agents and workflows spend again only after the last result is verified. ## What you get An Outcome is signed against rules both sides accepted, and anyone can verify it offline. When a number moves, the chain shows the earlier record, the new one, and why it changed. Uncertain units go to one link, one named person and one date, so nothing sits in a queue nobody owns. - [Invoice audit](/tools/invoice-audit) - [Outcome Spend](/products/outcome-spend) - [Outcome Acceptance](/products/outcome-acceptance)