# Brex Engineering Blog

Learn about Brex's world-class engineering efforts, product developments, and more.


**URL Source:** https://www.brex.com/journal/engineering-blog

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Brex Engineering Blog

World-class building

## Related Articles

### [What if 90% of your prompt is content you can't control?](https://www.brex.com/journal/articles/what-if-you-cant-control-your-prompt)
**Description:** Discover how Brex's audit agent handles messy, real-world context, and why good AI products give judgment a structure to operate inside, not a script to follow.
**Excerpt:** Discover how Brex's audit agent handles messy, real-world context, and why good AI products give judgment a structure to operate inside, not a script to follow.
**Tags:** Expense management, AI

### [How we test our agents: by committing fraud](https://www.brex.com/journal/articles/simulation-testing-ai-audit-agent)
**Description:** Simulation testing lets you find out how good your agent actually is before the world shows you. Here's what we've learned in teaching agents to catch fraud.
**Excerpt:** Simulation testing lets you find out how good your agent actually is before the world shows you. Here's what we've learned in teaching agents to catch fraud.
**Tags:** Expense management, AI

### [The future of financial reporting is not a chart](https://www.brex.com/journal/articles/the-future-of-financial-reporting-is-not-a-chart)
**Description:** Meet Brex Spaces, an AI-powered workspace for finance teams that goes beyond charts to deliver powerful insights, instantly.
**Excerpt:** Meet Brex Spaces, an AI-powered workspace for finance teams that goes beyond charts to deliver powerful insights, instantly.
**Tags:** Expense management, AI