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aws-samples

AWS DR Cost Estimator MCP Server

Official
by aws-samples

list_dr_strategies

List the four AWS disaster recovery strategies with labels and descriptions to compare recovery options.

Instructions

List the four supported DR strategies with labels and descriptions.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
errorNoPopulated only when ``success`` is False.
successNoTrue when the call succeeded. False indicates ``error`` is populated.
strategiesNoSupported DR strategies in canonical order.
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries the full burden. It clearly indicates a read-only listing operation, and the mention of 'four supported' strategies adds a specific behavioral detail. There is no hidden or destructive behavior, but the description could be slightly more explicit about the lack of side effects.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, compact sentence that conveys the essential information without any wasted words. Every part of the sentence contributes meaning.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

The tool is simple with no parameters and an output schema present, so the description's mention of the four strategies and their labels/descriptions is sufficient. It is complete for the tool's intended use.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The tool has zero parameters, so the baseline is 4. The description does not need to explain parameters, and the empty input schema confirms there is nothing to document.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the action ('List') and the resource ('DR strategies'), and specifies that it returns exactly four items with labels and descriptions. This distinguishes it from sibling tools like 'compare_dr_strategies' and 'analyze_dr_strategy', which imply different operations.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description gives a clear context for when to use the tool (to get the list of supported strategies), but does not explicitly mention alternatives or when not to use it. The implied usage is adequate for a simple list tool, but there is no direct comparison with sibling tools.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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