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

With no annotations provided, the description carries the burden of behavioral disclosure. It explicitly lists the output dimensions (low/expected/high cost), the cheapest fitting plan, rejected plans, and every assumption used, giving a clear picture of what the tool returns. No side effects are mentioned, but for an estimation tool this is reasonably transparent.

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

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

A single dense sentence that front-loads the core purpose ('Monthly cost') and then enumerates the key output attributes without any filler. Every phrase earns its place.

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

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

Given the rich input schema and the presence of an output schema, the description provides enough context for an agent to understand what the tool does and what result to expect. It could be slightly more complete by clarifying how it relates to sibling tools, but that gap is already captured under usage guidelines.

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

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

The description does not explain individual parameters, leaving that to the input schema. The schema itself provides descriptions for 'products' and the Workload object, with extensive property titles and defaults. The phrase 'every assumption used' hints at the role of unset workload fields but adds limited parameter-specific meaning.

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

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

The description clearly identifies the tool's action: estimating monthly cost (low/expected/high) of a workload on each product, and details what the result includes (cheapest plan, rejected plans, assumptions). It does not explicitly differentiate from sibling 'compare_products', but the cost-estimation focus is unmistakable.

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

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

Usage is implied by the name and description: call this when you need a cost estimate for a workload. However, it does not state when to prefer it over 'compare_products' or 'recommend_scraping_stack', nor does it provide any exclusions or prerequisites.

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