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

Annotations already cover read-only, idempotent, and non-destructive behavior, so the bar is lower. The description adds genuinely useful behavioral context beyond annotations by disclosing a rate limit ('200 per day per IP') and pricing unit, which is exactly the kind of operational constraint an agent needs.

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?

It is a single short sentence, which is appropriately sized, but the embedded JSON blob makes it read awkwardly and the missing punctuation between 'free' and 'Pricing' blurs the intent. The informational payload is front-loaded, but the prose half is under-polished.

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?

For a zero-parameter informational tool with no output schema, the description should make clear what the agent receives back; it states the topic but not the shape or format of the response. The free-quota detail is helpful, but the returned content remains underspecified.

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 tool takes zero parameters, so the baseline for this dimension is 4. Nothing in the description contradicts or muddies the empty schema.

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 conveys that this is an informational endpoint covering the product's purpose and its free-tier limits, and the embedded pricing object clarifies what 'free' means. However, there is no clear verb, the phrasing 'What MyAIContractor does and what is free Pricing:' is garbled, and it never names the sibling contractor_pricing tool it implicitly defers to.

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?

There is no explicit when-to-use or when-not-to-use guidance. The only routing signal is indirect: volume pricing is deferred to an external URL, hinting that this tool covers only the free tier, but an agent gets no instruction on choosing between this and contractor_pricing.

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