Money
beancount.ioBeancount.io
Plain-text accounting. Powerful, precise, auditable.
Version-controlled double-entry ledgers with an AI CFO. Agents query balances over BQL and MCP, and every edit stays reviewable.
Loading product updates…
Agents · Ledgers · Infrastructure
The studio behind Beancount.io and Bex — auditable money, verified compute — and 2,300+ essays on systems, leadership, and SaaS.
The pages readers spend the most time on.
The interview guide and design notes engineers keep coming back to: scaling, storage, real architectures.
All notesWhat breaks when LLMs and agents reach production, and the patterns that hold up.
Chapter-by-chapter notes on the books about how companies actually get built.
Practical courses for engineers, product managers, and tech professionals looking to level up their careers.
All coursesLearn how to design scalable systems and crack system design interviews.
Master the skills needed to excel as a product manager in tech.
Learn the fundamentals of Web3 and blockchain technology.
Master the art of creating beautiful and functional user interfaces.
Explore the intersection of technology, mindfulness, and personal growth.
Two products, one trust layer: money you can audit and compute you can verify.
Money
beancount.ioPlain-text accounting. Powerful, precise, auditable.
Version-controlled double-entry ledgers with an AI CFO. Agents query balances over BQL and MCP, and every edit stays reviewable.
Loading product updates…
Compute
bex.coThe cloud your agents can actually run.
Deployment infrastructure, multi-chain APIs, and model-driven security scans — agent compute that leaves an evidence trail.
Loading product updates…
cleared — beancount notation for a shipped, verified entrybeancount.io/changelogbex.co/changelog