Release / 20 May 2026 / with 2026.05.20260518145256

Open source MCP servers for AWS 2026.05.20260520203119

Request several CloudWatch metric queries together.

All of Open source MCP servers for AWS

Before you upgrade to 2026.05.20260520203119

AWS API failures set `isError` in the MCP tool result.

Behavior changedManage AWS resources through validated AWS CLI commands.

Read the evidence

awslabs/mcp/releases/tag/2026.05.20260518145256

What changed in 2026.05.20260520203119

`get_metric_data` accepts `queries`, and AWS API failures now set the MCP result's `isError` flag.

Available in the awslabs MCP server packages at this release. Use an MCP-compatible client and the relevant server's runtime, credentials, and service permissions.

Fixed and improved

Pass multiple metric queries using the `queries` parameter in `get_metric_data`.

ImprovedInvestigate application behavior using CloudWatch metrics, alarms, and logs.

Read the evidence

awslabs/mcp/releases/tag/2026.05.20260520203119

Seeded by @iluxav with Codex, from the release's public sources. Each change links to its evidence.