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

With no annotations, the description carries full burden. It explains the return format (structured comparison across price, contract terms, features, ratings) and notes that providers not serving the address's TDU will return no plans. It could mention failure modes more explicitly, but overall it's good.

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?

The description is concise with 5 sentences, well-organized, and front-loaded with the core purpose and examples. Every sentence adds value without redundancy.

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 no output schema, the description adequately explains the return dimensions and provides necessary sequencing and constraints. It covers the key aspects for an AI agent to use the tool correctly.

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?

Schema coverage is 100%, so baseline is 3. The description adds context by explaining that provider_slugs come from search_utility_providers and address is for plan availability, plus the TDU-filtering behavior. This adds value beyond the schema descriptions.

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 states the tool compares 2–5 Texas utility providers side by side with a specific verb and resource. It distinguishes itself from siblings like search_utility_providers and get_provider_details by focusing on side-by-side comparison for decision making.

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?

The description explicitly states when to use (e.g., 'help me pick between these two') and when not to use (e.g., don't compare across utility types). It also provides sequencing advice, recommending use after search_utility_providers, and explains the TDU-filtering constraint.

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