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Postman's Agent Mode Architecture on Amazon Bedrock for 40M Developers

Postman and AWS detail the architecture behind Postman's Agent Mode, an AI agent running on Amazon Bedrock that works across API testing, documentation, discovery, and implementation. At scale, the team found context rather than model capability was the main bottleneck, and that tool-selection errors increased once the visible toolset exceeded roughly 40 tools. Their patterns include dynamic tool scoping (narrowing 170+ tools to about 15 per task), schema-based reads via a ClickHouse query tool,