Why long-running AI agents break on HTTP and how Ably is fixing it

In this episode of The New Stack Makers, Matthew O’Riordan, CEO of Ably, explains how infrastructure originally built for human collaboration is now well-suited for long-running AI agents. While Ably initially resisted positioning itself as an AI company, the rise of agents that reason, call tools, and operate over extended periods revealed a natural fit for its real-time communication platform. O’Riordan highlights the limitations of HTTP for these use cases. While effective for short, request-response interactions, HTTP struggles with persistent, stateful experiences—such as handling dropped connections, multi-device usage, or mid-task interruptions. To address this, a new “durable session” layer is emerging, enabling continuous synchronization between agents and users through shared state, presence, and recovery mechanisms. Ably’s solution, AI Transport, augments existing architectures by keeping HTTP for requests while shifting responses to durable sessions. Features like mutable message streams and “live objects” allow seamless reconnection and collaboration. The goal is to provide a drop-in layer that developers can adopt without rethinking their stack—moving beyond traditional pub/sub models. Here's the full article to go along with the video: https://thenewstack.io/ably-durable-sessions-ai/ Learn more from The New Stack around Ably and AI Transport: How MCP Uses Streamable HTTP for Real-Time AI Tool Interaction https://thenewstack.io/how-mcp-uses-streamable-http-for-real-time-ai-tool-interaction/ Ably Touts Real-Time Starter Kits for Vercel and Netlify https://thenewstack.io/ably-touts-real-time-starter-kits-for-vercel-and-netlify/ AI Agents Need Help. Here’s 4 Ways To Ship Software Reliably https://thenewstack.io/ai-agents-need-help-heres-4-ways-to-ship-software-reliably/ Join our community of newsletter subscribers to stay on top of the news and at the top of your game. https://thenewstack.io/newsletter