# The Brex Blog Exclusive analysis of business spend on Brex and fresh finance insights. **URL Source:** https://www.brex.com/journal --- The Brex Blog ![Claude-launch-static-blog](https://brand.brex.com/transform/0f089ff7-97ff-4625-93b6-c2971ef0b39f/Claude-launch-static-blog) Brex in Claude: Your expenses, now where you work Now you can use Brex in Claude. Need to know how much is left on your T&E limit? The ETA on your reimbursement payout? If a receipt is required? Just ask! Articles Insights, best practices, and expert advice [See all](https://brex.com/journal/articles) Brex Engineering Blog Practices, architecture, and innovation [See all](https://www.brex.com/journal/engineering-blog) Brex Benchmark Expert analysis of business spend and economic data [See all](https://www.brex.com/journal/brex-benchmark-data) Building Brex Lessons we’ve learned while building our company [See all](https://www.brex.com/journal/building-brex) Looking for more? Visit our resource center for e-books, case studies, and events. ## Related Articles ### [How to build a wellness stipend on Brex](https://www.brex.com/journal/how-to-start-a-wellness-stipend-with-brex) **Description:** Build a wellness stipend program with embedded controls, automated accounting, and no reimbursement overhead. Better wellness benefits begin with Brex. **Excerpt:** Build a wellness stipend program with embedded controls, automated accounting, and no reimbursement overhead. Better wellness benefits begin with Brex. ### [Brex MCP: Connect Brex to any AI tool that supports MCP](https://www.brex.com/journal/brex-mcp-connect-brex-to-ai-tools) **Description:** Connect Brex financial data to Claude Code, Cursor, and any MCP-compatible tool. Check expenses, balances, and bills without switching tabs. **Excerpt:** Connect Brex financial data to Claude Code, Cursor, and any MCP-compatible tool. Check expenses, balances, and bills without switching tabs. ### [Brex and Fintua: Automated VAT reclaim for global enterprises](https://www.brex.com/journal/brex-and-fintua-automated-vat-reclaim-for-global-enterprises) **Description:** Brex has partnered with Fintua to bring automated, end-to-end VAT reclaim directly into the Brex platform, helping fast-growing companies recover VAT. **Excerpt:** Brex has partnered with Fintua to bring automated, end-to-end VAT reclaim directly into the Brex platform, helping fast-growing companies recover VAT. ### [Brex and VAT IT: Eliminating tax leakage across global spend](https://www.brex.com/journal/brex-and-vat-it-eliminating-tax-leakage-across-global-spend) **Description:** Brex has partnered with VAT IT to create a touchless, automated bridge between expense management and global VAT recovery. **Excerpt:** Brex has partnered with VAT IT to create a touchless, automated bridge between expense management and global VAT recovery. ### [Capital One Completes Acquisition of Brex](https://www.brex.com/journal/capital-one-completes-acquisition-of-brex) **Description:** We've officially joined forces with Capital One, accelerating our mission to break the tradeoff between speed and control for founders and finance teams. **Excerpt:** We've officially joined forces with Capital One, accelerating our mission to break the tradeoff between speed and control for founders and finance teams. ### [Brex in ChatGPT: Your expenses, one question away](https://www.brex.com/journal/brex-in-chatgpt) **Description:** Now you can use Brex in ChatGPT. Need to look up your card and expense data? Want to check on a reimbursement? Have a policy question? Just ask! **Excerpt:** Now you can use Brex in ChatGPT. Need to look up your card and expense data? Want to check on a reimbursement? Have a policy question? Just ask! ### [Built on 20 years of trust: Brex and Stifel Bank unite for founders](https://www.brex.com/journal/articles/brex-and-stifel-bank-partnership) **Description:** A match made for startups: Scale faster with Brex's AI-native intelligent finance platform and Stifel's 135+ years of expertise and venture banking leadership. **Excerpt:** A match made for startups: Scale faster with Brex's AI-native intelligent finance platform and Stifel's 135+ years of expertise and venture banking leadership. **Tags:** Corporate credit cards, Expense management, Cash flow management ### [Close your books faster with AI-native accruals automation.](https://www.brex.com/journal/articles/close-your-books-faster-with-ai-native-accruals) **Description:** Automate card and reimbursement accruals end to end, from identifying incomplete expenses to auto-reversing journal entries to syncing with your ERP. **Excerpt:** Automate card and reimbursement accruals end to end, from identifying incomplete expenses to auto-reversing journal entries to syncing with your ERP. **Tags:** Accounting, AI ### [Cash flow forecasting without a finance degree](https://www.brex.com/journal/cash-flow-forecasting) **Description:** Most startups don't run out of cash overnight, they lose visibility slowly. Learn how to build a simple cash flow forecast using three scenarios. **Excerpt:** Most startups don't run out of cash overnight, they lose visibility slowly. Learn how to build a simple cash flow forecast using three scenarios. **Tags:** Startups, Corporate credit cards, AI, Cash flow management ### [Not all MCPs are created equal](https://www.brex.com/journal/not-all-mcps-are-created-equal) **Description:** Two MCP servers can look identical on paper and behave nothing alike. Here are the three questions that tell them apart. **Excerpt:** Two MCP servers can look identical on paper and behave nothing alike. Here are the three questions that tell them apart. ### [Agent automations for big migrations: How we accelerated framework upgrades by 32x with Cursor](https://www.brex.com/journal/agent-automations-for-big-migrations) **Description:** How we arrived at this highly efficient system, along with the missteps we made along the way that are worth understanding. **Excerpt:** How we arrived at this highly efficient system, along with the missteps we made along the way that are worth understanding. ### [Long-running agents don't need tools or hosted sandboxes; all they need is bash.](https://www.brex.com/journal/long-running-agents-need-bash) **Description:** Brex rebuilt its expense audit agent on a bash workbench instead of native tools. Token usage dropped ~80%, and recall climbed at scale. Learn more. **Excerpt:** Brex rebuilt its expense audit agent on a bash workbench instead of native tools. Token usage dropped ~80%, and recall climbed at scale. Learn more. ### [How we built an agent that turns customer feedback into shipped fixes](https://www.brex.com/journal/agent-that-turns-customer-feedback-into-shipped-fixes) **Description:** Brex built an agent workflow that reads customer feedback across tools, finds quality of life improvement opportunities, and fixes them. Here's how it works. **Excerpt:** Brex built an agent workflow that reads customer feedback across tools, finds quality of life improvement opportunities, and fixes them. Here's how it works. ### [AI cost visibility is a problem for every company. Here's how we're solving it.](https://www.brex.com/journal/magpie-ai-cost-visibility-dashboard) **Description:** Traditional spend management can't handle the complexity of AI costs, so we built Magpie, an internal tool that provides real-time visibility of AI spending. **Excerpt:** Traditional spend management can't handle the complexity of AI costs, so we built Magpie, an internal tool that provides real-time visibility of AI spending. ### [How we built an AI oncall engineer at Brex](https://www.brex.com/journal/how-we-built-an-ai-oncall-engineer) **Description:** We encoded our oncall playbook into an agent. Here's what happened. **Excerpt:** We encoded our oncall playbook into an agent. Here's what happened. **Tags:** Expense management, AI ### [When your infrastructure tool's best interface is a web page, you have an agent problem](https://www.brex.com/journal/terminal-ui-became-an-agent-interface) **Description:** We built a terminal UI to replace a browser tab. Then we realized we'd built something agents could use too. **Excerpt:** We built a terminal UI to replace a browser tab. Then we realized we'd built something agents could use too. **Tags:** Expense management, AI ### [CrabTrap: an LLM-as-a-judge HTTP proxy to secure agents in production](https://www.brex.com/journal/building-crabtrap-open-source) **Description:** Here's what we learned in building and open-sourcing CrabTrap, and why we believe it’s a major step forward in the security of agent harnesses. **Excerpt:** Here's what we learned in building and open-sourcing CrabTrap, and why we believe it’s a major step forward in the security of agent harnesses. ### [Building autonomous agents for technical tasks: 5 lessons learned](https://www.brex.com/journal/building-autonomous-agents-for-technical-tasks) **Description:** Brex built a general-purpose template for delegating engineering work to agents with confidence. Here's how we did it and what we learned. **Excerpt:** Brex built a general-purpose template for delegating engineering work to agents with confidence. Here's how we did it and what we learned. **Tags:** AI ### [Brex Benchmark: The 15 newsletters startups are paying for in 2026](https://www.brex.com/journal/august-2026-brex-benchmark) **Description:** Based on Brex card spend, one writer's Substack can now out-earn a decade of trade press. See the 15 newsletters startups are expensing. **Excerpt:** Based on Brex card spend, one writer's Substack can now out-earn a decade of trade press. See the 15 newsletters startups are expensing. **Tags:** Startups ### [Brex Benchmark: The 25 books founders buy most](https://www.brex.com/journal/brex-benchmark-articles/the-25-books-founders-buy-most) **Description:** Based on Brex card spend, the founder biography is winning and manager playbooks are sliding. See the books founders bought most in the first half of 2026. **Excerpt:** Based on Brex card spend, the founder biography is back on top and the manager's playbook is sliding. See the books founders bought most in the first half of 2026. **Tags:** Finance leader ### [Brex Benchmark: Spring 2026’s top 25 fastest-growing software vendors](https://www.brex.com/journal/brex-benchmark-may-2026) **Description:** Check out this spring's leaderboard based on momentum, scaling velocity, and dollar growth acceleration. Plus, two trends to watch as we head into summer. **Excerpt:** Check out this spring's leaderboard based on momentum, scaling velocity, and dollar growth acceleration. Plus, two trends to watch as we head into summer. **Tags:** AI ### [March Madness: From the court to the corporate card ](https://www.brex.com/journal/march-2026-brex-benchmark) **Description:** We analyzed spending across 35K+ companies in all four NCAA regions. It revealed a corporate bracket (and a Cinderella winner). See how each region stacks up. **Excerpt:** We analyzed spending across 35,000+ companies in all four NCAA regions. It revealed a corporate bracket (and a Cinderella winner). See how each region stacks up. **Tags:** Controller/accountant ### [Brex Benchmark: Super Bowl Edition](https://www.brex.com/journal/brex-benchmark-february-2026) **Description:** We analyzed Super Bowl spending across 35,000+ customers. It revealed a six-month playbook (and a likely winner). See how corporate America preps for game day. **Excerpt:** We analyzed Super Bowl spending across 35,000+ customers. It revealed a six-month playbook (and a likely winner). See how corporate America gets ready for game day. **Tags:** Controller/accountant ### [Brex Benchmark: 2025 year-end report ](https://www.brex.com/journal/brex-benchmark-december-2025) **Description:** See which AI and software vendors reign supreme in this exclusive analysis of how 35,000+ customers spent using Brex in 2025. **Excerpt:** See which AI and software vendors reign supreme in this exclusive analysis of how 35,000+ customers spent using Brex in 2025. **Tags:** AI ### [October 2025 - Brex Benchmark](https://www.brex.com/journal/brex-benchmark-october-2025) **Description:** Brex customers increased their OpenAI spending by 80% so far in 2025. We detail its rise from fun chatbot to platform strategy in October's Brex Benchmark. **Excerpt:** OpenAI's momentum with Brex customers is compounding in 2025. We detail its meteoric rise from chatbot to platform strategy in October's Brex Benchmark. **Tags:** AI ### [Replit and Vercel bringing vibes and velocity](https://www.brex.com/journal/brex-benchmark-september-2025) **Description:** Which vibe coding platforms are Brex customers adopting at a high clip? The Brex Benchmark has all the answers. **Excerpt:** September's Brex Benchmark dives into the growth of two vibe coding platforms across startups and enterprises. **Tags:** AI ### [Enterprises gear up to end year on a growth note.](https://www.brex.com/journal/brex-benchmark-august-2025) **Description:** The Brex Benchmark shows how Brex customers are spending on SaaS and AI tools. Check out insights using Brex data from August 2025. **Excerpt:** The Brex Benchmark shows how Brex customers are spending on SaaS and AI tools. Check out insights using Brex data from August 2025. **Tags:** AI ### [Tekion](https://www.brex.com/journal/brex-for-tekion) **Description:** The technology a dealer uses to run the business and the tools they use to pay have never talked to each other. Until now. **Excerpt:** The technology a dealer uses to run the business and the tools they use to pay have never talked to each other. Until now. ### [Brex is joining forces with Capital One](https://www.brex.com/journal/brex-and-capital-one-join-forces) **Description:** Brex and Capital One are joining forces in the largest bank-fintech deal in history. CEO Pedro Franceschi shares what this means for the future of finance. **Excerpt:** Brex and Capital One are joining forces in the largest bank-fintech deal in history. CEO Pedro Franceschi shares what this means for Brex, our customers, and the future of finance. ### [The end of the trade-off: How AI agents broke the onboarding trilemma](https://www.brex.com/journal/rebuilding-onboarding-ai-native) **Description:** Brex rebuilt onboarding as an AI-native, multi-agent system and can now onboard customers in minutes, with greater accuracy and scale. **Excerpt:** Brex rebuilt onboarding as an AI-native, multi-agent system and can now onboard customers in minutes, with greater accuracy and scale. ### [The turnaround is over](https://www.brex.com/journal/the-turnaround-is-over) **Description:** Brex CEO Pedro Franceschi sent a note with the Brex team sharing an important company milestone. **Excerpt:** CEO Pedro Franceschi shared a note to Brex employees on an important company milestone.