Why Polling APIs Rate-Limits Your Agent and How Pub/Sub Fixes It

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Autonomous agents that repeatedly poll APIs for status updates often trigger rate-limit errors (HTTP 429), causing them to miss the very events they were monitoring. Common workarounds like exponential backoff, conditional requests, and adaptive polling reduce the pain but do not eliminate unnecessary requests during idle periods. Approaches such as rotating API keys or IP addresses are explicitly prohibited by most providers and mask the underlying architectural flaw rather than resolving it. Webhooks offer a push-based alternative but fail for headless agents lacking stable public endpoints or persistent uptime. The recommended fix is a persistent pub/sub connection, where the agent subscribes to relevant topics and receives pushed messages instantly, eliminating polling loops and rate-limit exposure entirely.

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