Monzo engineers build a trustworthy financial agent harness: five design principles for AI you can trust
AI Engineer · youtube · 2026-11-10
A full AI Engineer workshop where Monzo's Francesco Galletta and Felippe Felisola Caso build a financial-analyst agent harness live, using one real problem: budgeting a wedding.
Key content:
- Core thesis: speed isn't the bottleneck — trust is, especially when answers involve your money.
- Five design principles: shared domain, consistency (math belongs in code, not the model's head), evidence (show the receipts), accountability, and verification (golden examples & outside reference points).
- Practical war stories: why long linear chats fall apart, turning plans into decision trees, the "master file" horror story.
- Q&A covers how many harnesses to build, Skills vs. a dedicated harness, and a warning not to over-sharpen the axe.
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