Awsmux tool runs AWS CLI commands across hundreds of accounts in parallel

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A new open-source tool called Awsmux allows users to fan out a single AWS CLI command across multiple accounts and regions simultaneously, merging all results into one stream. It also includes a built-in MCP server designed for AI agents. In a 150-session benchmark, agents using Awsmux outperformed those using the standard AWS CLI, running up to 5.4 times faster, using up to 7.4 times fewer tokens, and costing up to 2.9 times less. The tool is distributed as a single Go binary with minimal dependencies, relying only on the standard library and the Cobra CLI framework. The project was shared on Hacker News by its developer, who is seeking community feedback.

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