open_image

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 states the action of opening a file, without disclosing side effects such as whether the image becomes active, what happens if the file is already open, or error behavior. This is a significant gap for a mutation-like operation.

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 communicates the core action without any redundant words. It is front-loaded with the verb and resource, making it easy to scan.

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?

The tool is simple with only one parameter and an output schema, so the description need not explain return values. However, it omits side-effect information (e.g., whether opening sets the image as active) that would help an agent reason about fallback behavior. It is adequate for a basic open operation but not rich.

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 one parameter 'path' with only a title and no description, and schema description coverage is 0%. The description merely says 'existing local image file', which hints that path is a file path but does not explain required format, absolute vs relative, or supported file types. The description fails to compensate for the schema's lack of parameter detail.

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 a specific verb ('Open') and resource ('existing local image file') with a target ('in GIMP'). It distinguishes from siblings like create_image or list_open_images by specifying that it operates on existing files on disk.

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 context is implied by 'existing local image file', suggesting this is for loading files rather than creating new ones. However, there is no explicit mention of when to use this tool versus alternatives like create_image, nor any exclusions or alternative references.

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