Chained multi-service agent workflows break existing sandboxes built for single calls

Common_Dream9420 · reddit · 2026-08-31

The author describes a "multi-agent validation wall": a single agent hitting one API is manageable, but stateful chains across Stripe, Slack, GitHub, hotel booking and confirmations with shared state and order dependencies break existing sandboxes, which are built for single calls. While building FetchSandbox he had to build stateful multi-service twins (50+ so far) so agents can run full workflows pre-prod and at runtime. He asks the community how others validate chained workflows before shipping to prod.

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