Posts tagged Realtime.

I asked Claude to bold every occurrence of a word in a markdown file, and every edit landed one character off, because of a single emoji earlier in the document. Python counts that emoji as one character; JavaScript counts it as two. An integer that crosses a language boundary has units, declare them, or each side quietly picks its own.

A Shannon agent run looks like one continuous stream in the browser. Underneath it's a loop of separate Anthropic API calls with tool execution wedged between them. The fix is a server-side translation layer that hides every seam behind a small, fixed vocabulary of UI events.

Every AI agent UI is secretly two UIs: one renders events live over SSE, the other rebuilds the same timeline from the database on reload. They have to match exactly, and five separate bugs, from parsing to null handling to ordering, proved they easily don't.