Coding agents lower the cost of reverse-engineering home devices

Simon Willison observes that coding agents are enabling people to reverse-engineer and automate devices in their homes, a task that was previously economically unviable for most users. The core challenge prior to coding agents was return on investment: the effort required to reverse-engineer undocumented APIs and maintain the resulting code often outweighed the benefits. Unstable APIs introduced additional risk, as any changes could break the automation and require costly updates.

Willison argues that coding agents fundamentally change this equation by drastically reducing both the effort to write working code and the cost of experimentation. Failed attempts are less costly, and the reduced psychological burden of potentially discarding or reworking code makes it easier to justify starting a project. This shift lowers the barrier to entry for reverse-engineering tasks, making automation of home devices more accessible to a broader audience.