Daniel TernyakArticles by Daniel Ternyak.https://www.danielternyak.com/I'm building a product agent, so I started ProductAgents.comhttps://www.danielternyak.com/articles/why-i-started-productagents-com/https://www.danielternyak.com/articles/why-i-started-productagents-com/I lead the Agents team at Owner, where we're building Owner Agent. To learn how other teams build agents into their products, I started ProductAgents.com, a source I'm compiling as I go.Mon, 28 Sep 2026 00:00:00 GMTKeeping Anthropic's 1-hour prompt cache when you use the Vercel AI Gatewayhttps://www.danielternyak.com/articles/vercel-ai-gateway-downgrades-anthropic-prompt-cache/https://www.danielternyak.com/articles/vercel-ai-gateway-downgrades-anthropic-prompt-cache/Routing Claude through the Vercel AI Gateway can quietly shorten your prompt cache from an hour to five minutes. Here's how to spot it and how to avoid it.Mon, 22 Jun 2026 00:00:00 GMTFixing "fsevents" deployment errors on Herokuhttps://www.danielternyak.com/articles/fixing-fsevents-deployment-errors-on-heroku/https://www.danielternyak.com/articles/fixing-fsevents-deployment-errors-on-heroku/Experiencing issues deploying your node based web application on Heroku? Here's a potential fix!Tue, 17 Mar 2020 00:00:00 GMT