What is Link Agent Incremental Authorization and Checkout Guidance?

Agentic commerce is a field in which AI agents search for products, compare options and pay on behalf of the people they serve, instead of a person doing every step. The hard part is trust and reliability: the person must stay in control of their money, and the agent must cope with checkout flows where the final price is not known at the start. Link Agent Wallet is Stripe's wallet that lets an agent pay online with a customer-controlled payment method. Incremental authorization is a Link feature that lets an agent request a higher approved amount when the final price exceeds the original, for example when a baggage fee is added after a fare was approved, instead of restarting the purchase. Link also gives specific guidance when a payment hits an obstacle, such as a URL the customer can use to complete a 3D Secure challenge (an extra identity check requested by the card issuer), and Stripe described these features in a September 2026 blog post.

Written from primary sources and reference pages, and checked against them by an independent AI fact-checker. Drafted with AI assistance.