https://montaser778.github.io/notes.html Short, specific notes from building voice and agent systems. en Mon, 22 Jun 2026 00:00:00 GMT https://montaser778.github.io/note-evaluation.html https://montaser778.github.io/note-evaluation.html Mon, 22 Jun 2026 00:00:00 GMT Eyeballing three example outputs is not measurement — it is a guess wearing the clothes of an experiment. https://montaser778.github.io/note-webrtc.html https://montaser778.github.io/note-webrtc.html Tue, 09 Jun 2026 00:00:00 GMT Localhost tells you the application logic is sound. It tells you nothing about NAT traversal, TURN relay cost, or mobile network jitter. https://montaser778.github.io/note-idempotency.html https://montaser778.github.io/note-idempotency.html Tue, 26 May 2026 00:00:00 GMT Payment providers retry webhook delivery on any ambiguous response — the idempotency key has to be there from the first handler written. https://montaser778.github.io/note-latency.html https://montaser778.github.io/note-latency.html Tue, 12 May 2026 00:00:00 GMT The number that predicts how a conversation feels is endpoint-detected-to-first-audible-token, measured on the server.