There's no clean answer yet — but the direction of travel is visible. Contract law already permits machine-made deals; agency doctrine points at the deployer; and courts, regulators, and payment networks are converging on the same conclusion: authority disputes will be decided on evidence.
Most autonomous negotiation products automate the negotiation process, not the enterprise's final authority to commit. Here's where the line actually sits at Pactum, Fairmarkit, Keelvar, and Vertice — and why.
A field guide to who's actually running autonomous negotiation in production procurement versus who's still assisting humans — Pactum, Keelvar, Luminance, Fairmarkit, Zip, and the rest, ranked by how real the autonomy actually is.