Release / 8 Sep 2026

Open source MCP servers for AWS 2026.09.20260908143235

Read Savings Plans utilization without losing time-series data.

Before you upgrade to 2026.09.20260908143235

1 to fix

Stop calling the removed plan/dashboard APIs, `ListIamRoleAssignments`, and `SendMessageStreaming`; these unavailable operations are no longer exposed.

Action requiredManage AWS Transform workspaces, modernization jobs, connectors, artifacts, and human review tasks.Affects: Clients calling previously exposed but unavailable Transform operations.Inferred

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awslabs/mcp/releases/tag/2026.09.20260908143235

What changed in 2026.09.20260908143235

RI/SP responses use corrected fields; Redshift long-polls query status and Transform removes unavailable service operations.

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

Read RI savings and unused-hour costs, and retrieve Savings Plans utilization from the correct time-series response fields.

Now worksInvestigate AWS billing and cost management data.Inferred

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awslabs/mcp/releases/tag/2026.09.20260908143235

Wait for query statement status using Data API long polling.

ImprovedExplore Redshift data warehouses and run analytical queries.

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awslabs/mcp/releases/tag/2026.09.20260908143235

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