Download Schedule File

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

Annotations already establish read-only/idempotent behavior, and the description reinforces it. It adds value by describing the response format (JSON object or download URL) and the error payload pattern with common HTTP statuses (401, 403, 404), which goes beyond the structured fields.

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 well-structured and front-loaded with the primary action. It contains some redundancy with annotations and schema (read-only, required parameter), but every sentence contributes additional operational context, such as error handling and endpoint reference.

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 one-param download tool with no output schema, the description covers return format, error behavior, endpoint, and selection criterion. It could be more complete by describing the file type or size, but it is sufficient for an agent to decide and invoke 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% for the single project_id parameter, so the description need not add much. It merely repeats that project_id is required and gives its location in the endpoint, adding no new semantic meaning beyond the 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 clearly states the verb ('Download') and resource ('most recently uploaded schedule file'), and distinguishes it by noting it returns the full field set for a known file. It also provides the endpoint and API path, making the tool's 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 gives explicit usage context: 'Use this when you already know which schedule file you want and need its full field set.' It implies alternatives (e.g., listing files first) but doesn't name sibling tools, so it falls short of a 5.

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