All your agents are going async

Article

TL;DR

Agents that outlive HTTP sessions need durable state — the problem is portability, not transport protocol.

Key Takeaways

• Agent session state is non-portable today: Claude Code JSONL vs Cursor SQLite, no shared schema
• SSE + Last-Event-ID may provide durable transport without new infrastructure
• Author works at Ably (real-time infra) — conflict of interest buried two paragraphs from the end

Discussion

Top comments:

• [bozdemir]: Transport isn’t the problem — async output via Slack or email beats live session rejoining

  The disclosure would have landed better at the top than buried two paragraphs from the end.

• [tuo-lei]: Session state portability is the real blocker — async transport is the wrong layer to optimize
• [TacticalCoder]: Existing solution: $5/mo dedicated server, SSH, tmux — no new protocol needed

  $5 per month dedicated server, SSH, tmux.

• [anamexis]: Durable transport may be free with SSE and Last-Event-ID once state is durable

Discuss on HN