Server-Sent Events: Recoverable One-Way Push over HTTP Event Streams
SSE sends text/event-stream over ordinary HTTP, with browser reconnection and Last-Event-ID; simple transport is not durable unless the server retains events behind that cursor.
#web-standards
3 postsWebSocket: Duplex Connections Are the Start; Protocol and Backpressure Are the Work
WebSocket supplies a duplex message transport, not auth renewal, schemas, acknowledgements, replay, rooms, or backpressure policy; those layers determine production correctness.
WebMCP: Letting a Web Page Hand Its Own Functions to an Agent
WebMCP lets a page register its own functions as agent-callable tools via document.modelContext.registerTool(), replacing the agent's guess-the-button DOM scraping. Chrome opened an origin trial in 149 and estimates stable in 157; Edge followed in 150. But WebKit has formally opposed it ('an agent acting on a user's behalf is, in effect, assistive technology... the site should not single it out for different treatment') and Mozilla filed neutral. This post covers both APIs, where the security gates sit, and whether to invest now with one and a half engines behind it.