The use case: how Brex deploys Retool
Brex builds internal tools on Retool for its engineering, operations, customer support, sales, and risk teams, including a transaction simulator and a Template Manager that lets non-technical staff edit and approve customer notification templates without engineering changes.
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Instead, he was able to create a simulator in less than 30 minutes by dragging and dropping components, building a few queries, and making a couple of REST API calls.
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Explore Brex’s AI stackRetool users in Fintech & Payments
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- Oct 8, 2026
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“The outcome of this tool,” Derek says, “is that we have reduced [by] 75% the amount of code that you have to write to ship a notification.”












