How is RCU calculated?

RCU is calculated by multiplying read operations by item size, then dividing by 4 for eventual consistency or by 2 for strong consistency, rounding up to the nearest whole number.

What defines a hot partition?

A partition is considered hot if the throughput of a single partition key exceeds 3000 RCU or 1000 WCU.

Can I check for oversized items?

Yes, use `check_item_and_burst_limits` to flag if any item exceeds the 400 KB DynamoDB limit.

DynamoDB Capacity Calculator MCP Connector for Claude

A+

Deterministic AWS DynamoDB capacity, partition, and burst limit calculator.

3 tools Official Updated Oct 1, 2026 Official Vinkius Partner

More Details Connect to Claude

This MCP server provides precise calculations for AWS DynamoDB provisioning. Use calculate_provisioned_capacity to determine exact RCU and WCU requirements based on item size and request rates. Use analyze_partition_health to identify hot partition risks and calculate required partition counts. Use check_item_and_burst_limits to verify if items exceed the 400 KB limit and to estimate available burst capacity for specific timeframes.

dynamodbawscapacityprovisioningdatabase-management

Connect to Claude

Subscribe on Vinkius, then add this connector to Claude.ai or Claude Code.

① Claude.ai (web app)

Go to Settings → Connectors → Add custom connector
Paste the MCP endpoint URL below

https://edge.vinkius.com/vk_preview_ZefjDmgFN1v3VLB1hsGijrOLqyqhzlTSkH3i1nws/mcp

② Claude Code (terminal)

claude mcp add --transport http dynamodb-capacity-calculator https://edge.vinkius.com/vk_preview_ZefjDmgFN1v3VLB1hsGijrOLqyqhzlTSkH3i1nws/mcp

③ Claude Desktop

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "dynamodb-capacity-calculator": {
      "url": "https://edge.vinkius.com/vk_preview_ZefjDmgFN1v3VLB1hsGijrOLqyqhzlTSkH3i1nws/mcp"
    }
  }
}

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