Ecko blog https://ecko.sh/blog Guides on the language. Each one shows a program, then the case that goes wrong. Using `ai` https://ecko.sh/blog/using-ai Tue, 22 Sep 2026 00:00:00 GMT A typed call, a tool, a session and a stream. The same file runs with no API key. Record fields can have defaults https://ecko.sh/blog/record-field-defaults Mon, 21 Sep 2026 00:00:00 GMT A field with a default can be left out. The default runs every time a value is built. The markdown package https://ecko.sh/blog/markdown-package Sun, 20 Sep 2026 00:00:00 GMT Parse a document, render HTML, and see which links are left as plain text. When the whole string is an interpolation https://ecko.sh/blog/interpolation-strings Sat, 19 Sep 2026 00:00:00 GMT A string that contains only a hole is text, the same as any other interpolation. Saying which Ecko a package needs https://ecko.sh/blog/package-ecko-version Fri, 18 Sep 2026 00:00:00 GMT An `ecko` field in the manifest is checked when the package is imported. Serial ports and the device capability https://ecko.sh/blog/serial-and-device Thu, 17 Sep 2026 00:00:00 GMT Open a port as a stream. The grant for that is `device`, which `fs:write` does not include.