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TLDRocket
17 October 2026
For all the talk of AI agents that can browse, plan, and finish the job, today’s reality check is on the web itself. Users of Meta’s Muse, xAI’s Grok, OpenAI’s Dots, and Instinct have reported being blocked when agents try to take actions at major sites—turning “autonomous” into “ask permission.” The practical fix is emerging in parallel: Perplexity open-sourced SPACE, its Firecracker microVM sandbox for running agent tasks, and said median create latency fell from 185 ms to 60 ms while host-escape mitigations hit 0 of 108 red-team runs. In other words, the stack is getting more careful about where code runs and what it can do, because the outside world is increasingly saying no.
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