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code-alchemist01

MCP Cloud Services Server

estimate_monthly_cost

Calculate monthly cloud service expenses for AWS, Azure, or GCP based on current resource usage to help manage budgets.

Instructions

Estimate monthly cost based on current usage

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
providerYesCloud provider

Implementation Reference

  • Handler implementation for the 'estimate_monthly_cost' tool, which provides a placeholder estimation response requiring actual usage data.
    case 'estimate_monthly_cost': {
      // Simplified estimation
      return {
        provider,
        estimatedMonthlyCost: 'N/A - Requires actual usage data',
        message: 'Monthly cost estimation requires detailed usage metrics',
      };
    }
  • Registration of the 'estimate_monthly_cost' tool within the costAnalysisTools array, including name, description, and input schema.
      {
        name: 'estimate_monthly_cost',
        description: 'Estimate monthly cost based on current usage',
        inputSchema: {
          type: 'object',
          properties: {
            provider: {
              type: 'string',
              enum: ['aws', 'azure', 'gcp'],
              description: 'Cloud provider',
            },
          },
          required: ['provider'],
        },
      },
    ];
  • Input schema definition for the 'estimate_monthly_cost' tool, specifying the required 'provider' parameter.
    inputSchema: {
      type: 'object',
      properties: {
        provider: {
          type: 'string',
          enum: ['aws', 'azure', 'gcp'],
          description: 'Cloud provider',
        },
      },
      required: ['provider'],
    },
Behavior2/5

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It states the tool estimates costs but doesn't describe how it works (e.g., whether it uses real-time data, historical trends, or assumptions), what permissions are required, or what the output looks like. This is inadequate for a tool that likely involves financial calculations.

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

Conciseness4/5

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

The description is a single, efficient sentence that gets straight to the point without unnecessary words. However, it's under-specified for a tool with no annotations or output schema, so it could benefit from slightly more detail to improve clarity.

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

Completeness2/5

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

Given the complexity of cost estimation and the lack of annotations and output schema, the description is incomplete. It doesn't explain how the estimation is performed, what data sources are used, or what the result includes, leaving significant gaps for an AI agent to understand and use the tool effectively.

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

Parameters3/5

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

The description adds no parameter information beyond what's in the schema, which has 100% coverage. The schema fully documents the single parameter 'provider' with its enum values. Since schema coverage is high, the baseline score is 3, as the description doesn't compensate but also doesn't detract.

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

Purpose3/5

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

The description states the tool's purpose as 'Estimate monthly cost based on current usage', which is clear but vague. It specifies the verb 'estimate' and resource 'monthly cost', but doesn't differentiate from sibling tools like 'get_cost_by_service' or 'analyze_costs', leaving ambiguity about what makes this tool unique.

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

Usage Guidelines2/5

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

The description provides no guidance on when to use this tool versus alternatives. It doesn't mention sibling tools like 'get_cost_by_service' or 'analyze_costs', nor does it specify prerequisites, contexts, or exclusions for usage, leaving the agent to guess based on the tool name alone.

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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