superchat_get_file

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

Annotations already declare the operation read-only, idempotent, and non-destructive. The description adds one useful behavioral clarification—that file contents are not downloaded—which goes beyond the annotations. However, it does not describe return format, error behavior, or other operational details, so the added context is limited.

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 two short sentences with no filler. The core action and scope are front-loaded, and the clarifying non-download note earns its place without redundancy.

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 single-parameter, read-only metadata lookup, the description is complete. The schema fully documents the required parameter, and the annotations cover the safety profile. The statement 'This does not download its contents' closes the most likely misuse case, leaving no critical gap for correct invocation.

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 description coverage is 100%, and the single 'file_id' parameter is already well documented in the schema with format and an example source ('returned by list_files'). The description adds no additional parameter semantics beyond what the schema already provides, so the baseline score of 3 is appropriate.

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 a specific verb ('Read metadata') and a specific resource ('one uploaded file by ID'), and explicitly distinguishes itself from downloading file contents. This makes the tool's purpose unmistakable and separates it from any file-download expectation.

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 clearly establishes when to use the tool: to read metadata for a file by ID. It also states an implicit when-not ('This does not download its contents'), which helps an agent avoid using it for content retrieval. It does not explicitly name alternative tools, but the context is clear enough.

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