get_pricing

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

With no annotations provided, the description carries the full burden. It discloses the tool's output content (plan details, prices, features), states 'No arguments,' and hints at dependency on API key activation via register_free_key. While it doesn't explicitly say 'read-only' or list auth requirements, the behavior is clear: it simply displays pricing information without 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.

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

The description is compact and front-loaded: the first clause states the purpose, followed by a dash-separated plan summary, and ends with a useful cross-reference to register_free_key. Every sentence serves a purpose, and the entire description is just two sentences with no wasted words.

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 tool's simplicity (zero parameters, no output schema, a simple informational task), the description is complete. It explains what the user will see (plan details), confirms no arguments are needed, and offers a relevant next step for API key activation. There are no gaps for the agent to misinterpret.

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 has zero parameters, so baseline is 4. The description reinforces this with 'No arguments,' which is all that is needed. It adds no additional parameter semantics because there are none to explain.

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's function with a specific verb and resource: 'See pricing and features for every plan.' It enumerates the plans, which distinguishes it from all sibling tools that deal with compliance, scanning, or key management. No ambiguity about what this tool does.

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 implies usage by stating 'See pricing and features' and then gives concrete next steps with 'Call register_free_key() to activate your free API key.' This provides clear context for when to use the tool, though it does not explicitly mention alternatives or exclusions. Since no sibling tool offers pricing, this is effective guidance.

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