get_binary

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

With no annotations, the description carries the full burden of behavioral disclosure. It does reveal the response structure, which is a key trait, but it does not mention error behavior, authentication, or side effects. 'Fetch' implies read-only, and the return format adds value, but other traits are absent.

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, direct sentence with no extraneous content. It is front-loaded with the action and resource, and the response format is appended concisely.

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 fetch tool, it provides the action and return format, which covers the core need. However, with no annotations and no output schema, the description falls short by not explaining the 'practice' parameter or any context around its usage. The tool is simple, but the missing parameter explanation prevents a higher score.

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 schema has no parameter descriptions (0% coverage), so the description must compensate. It implicitly clarifies the 'id' parameter as the Binary identifier, but the 'practice' parameter is left unexplained. This is incomplete for a two-parameter tool with no other documentation.

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 specifies the action (Fetch), the resource (Binary by id), and the response format ({content_type, data_base64}). This distinguishes it from sibling get tools like get_patient or get_coverage, making the purpose unambiguous.

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 when a Binary resource is needed by id, but it does not provide explicit when-to-use or alternative guidance compared to siblings. The simple 'Fetch a Binary by id' gives clear context, but no exclusions or alternatives are mentioned.

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