Posts, experiments, TILs and tweets from yankoivanov.com.https://yankoivanov.comhttps://yankoivanov.com/today-i-learned#til-6ad0f8b9ff9077b1fa99aa0bhttps://yankoivanov.com/today-i-learned#til-6ad0f8b9ff9077b1fa99aa0bIn 1991 researchers at Cambridge pointed a camera at the coffee pot in the Trojan Room so they could check whether there was coffee before walking down the hall. It went online in 1993 and became the first webcam. The whole internet got its start from lazy people and an empty carafe. The web has repaid the debt: HTTP status 418 is "I'm a teapot", from the 1998 April Fools' RFC 2324 (the Hyper Text Coffee Pot Control Protocol). A teapot asked to brew coffee is supposed to refuse with 418.Thu, 15 Oct 2026 16:00:00 GMTtilhttps://yankoivanov.com/tweets#tweet-6ad0d361843eeee0e3e828a5https://yankoivanov.com/tweets#tweet-6ad0d361843eeee0e3e828a5Six weeks in. Sleep is a feature I keep postponing to the next sprint.Thu, 15 Oct 2026 13:23:00 GMTtweethttps://yankoivanov.com/tweets#tweet-6ad0d35e843eeee0e3e828a1https://yankoivanov.com/tweets#tweet-6ad0d35e843eeee0e3e828a1I'm building a pergola next spring, so naturally I spent the week building the calculator. Posts, beams, rafters, a cut list and a 3D model, and not one board cut. https://yankoivanov.com/experiments/pergola-calculatorThu, 15 Oct 2026 13:22:00 GMTtweethttps://yankoivanov.com/today-i-learned#til-6ad0d35a843eeee0e3e8289dhttps://yankoivanov.com/today-i-learned#til-6ad0d35a843eeee0e3e8289dA2A is how agents talk to each other. AP2 is how they pay, and it's built on top of A2A. Payment systems assume a human is clicking "buy", so AP2 adds a signed "mandate" that records what the user authorised. https://a2a-protocol.org/latest/ https://ap2-protocol.org/Thu, 15 Oct 2026 13:21:00 GMTtilhttps://yankoivanov.com/experiments/experiment/pergola-calculatorhttps://yankoivanov.com/experiments/experiment/pergola-calculatorHow many posts, beams and rafters a timber pergola needs, in what size, with a cut list, a price and a 3D model you can turn.Thu, 15 Oct 2026 00:00:00 GMTposthttps://yankoivanov.com/development/post/kraken-shipitfam-local-workerhttps://yankoivanov.com/development/post/kraken-shipitfam-local-workerKraken lets every Claude on a team ask the right person, or the right person's Claude, instead of stopping dead and waiting for a Slack reply.Fri, 25 Sep 2026 00:00:00 GMTposthttps://yankoivanov.com/experiments/experiment/improbability-drivehttps://yankoivanov.com/experiments/experiment/improbability-driveGenerates daisyUI 5 themes with OKLCH maths, checks their contrast live, and lets you wear one across this whole site.Fri, 25 Sep 2026 00:00:00 GMTposthttps://yankoivanov.com/development/post/list-of-free-golang-bookshttps://yankoivanov.com/development/post/list-of-free-golang-booksSome of the best golang books aroundWed, 02 Feb 2022 00:00:00 GMTpost