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Release / 28 Oct 2025 / with 2025.10.20251022170206, 2025.10.20251024213946, 2025.10.20251027191808

Open source MCP servers for AWS 2025.10.20251028223010

Inspect AWS workload cost estimates from your MCP client.

All of Open source MCP servers for AWS

Before you upgrade to 2025.10.20251028223010

1 to fix

Use Python 3.12 or newer for the diagram server.

Action requiredGenerate AWS architecture diagrams.Affects: Users running the AWS Diagram server on Python 3.10 or 3.11.Inferred

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awslabs/mcp/blob/2025.10.20251022170206/src/aws-diagram-mcp-server/pyproject.toml

What changed in 2025.10.20251028223010

Billing tools can list Pricing Calculator workload estimates, while SiteWise adds bulk transfers and serverless tools add event source mapping management.

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

Analyze CloudWatch Synthetics canaries alongside application performance.

ImprovedInvestigate application performance with the original CloudWatch AppSignals server.

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awslabs/mcp/releases/tag/2025.10.20251022170206

Use additional credential sources with `call_aws`.

ImprovedManage AWS resources through validated AWS CLI commands.

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awslabs/mcp/releases/tag/2025.10.20251022170206

List and inspect workload estimates from the Billing and Cost Management Pricing Calculator.

ImprovedInvestigate AWS billing and cost management data.

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awslabs/mcp/releases/tag/2025.10.20251027191808

Use bulk import, buffered ingestion, and bulk metadata transfer job management.

ImprovedManage industrial assets and ingest their data in AWS IoT SiteWise.

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awslabs/mcp/releases/tag/2025.10.20251028223010

Create, troubleshoot, and optimize Lambda event source mappings.

ImprovedBuild and deploy serverless applications using AWS SAM.

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awslabs/mcp/releases/tag/2025.10.20251028223010

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