books_get_bill

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 only says 'Get' which implies a read operation, but it does not mention what happens if the bill is not found, the return format, or any error behavior. This goes no further than the basic verb.

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 a single, concise sentence that front-loads the verb and resource. It is appropriately sized 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?

For a simple read tool with one param and no output schema, the description conveys the core operation. It does not explicitly describe the return value, but 'Get a specific bill' naturally implies returning the bill object. Given the low complexity, this is largely complete, though a note on return format could push it higher.

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 input schema has a single required 'bill_id' with no description, and schema description coverage is 0%. The description's phrase 'by ID' clarifies that 'bill_id' is the unique identifier for the bill, mapping the parameter to its purpose. Given the simplicity of the single parameter, this is adequate but not highly detailed.

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 uses the specific verb 'Get' with the resource 'specific bill from Books' and the method 'by ID', clearly distinguishing this single-record retrieval from the sibling tool 'books_get_bills' which likely lists bills. It states exactly what the 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 use when a specific bill ID is known and a single bill is needed, but it does not explicitly mention when not to use it or point to alternatives like 'books_get_bills' for listing. There is no exclusionary guidance.

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