get_image

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

With no annotations, the description carries the full behavioral burden. It usefully discloses that the viewing URL is signed and expires in 24h, which is non-obvious time-sensitivity context. However, it says nothing about the read-only nature of the operation, permission requirements, or error behavior when the id is unknown.

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?

A single sentence that front-loads the action and lists the payload without filler. Every clause earns its place.

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?

An output schema exists, so the return shape need not be restated, and the description already summarizes the payload. For a simple read-by-id tool with one required parameter, this is nearly complete, with only permission/auth context missing.

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 0% and the single image_id parameter is undocumented in the schema. The phrase 'one image's' implies the parameter identifies a singular image, giving minimal compensation, but no format or source for the id is given. Baseline is low, and the description only marginally fills the gap.

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?

States a specific verb (get) and resource (one image) and enumerates exactly what is returned: metadata, all annotations, and a signed viewing URL. This cleanly distinguishes it from siblings like list_images (plural listing) and update_image_metadata (mutation).

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?

Usage is only implied: fetch a single image by id. There is no explicit statement of when to prefer this over list_images or when it is not applicable, and no prerequisites are mentioned. Adequate but leaves routing to inference.

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