gimp_save_image

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

Annotations already declare destructiveHint=true and readOnlyHint=false, so the bar is lower. The description adds real context: it saves with layers preserved and, when no path is given, overwrites the current .xcf file, which directly explains the destructive behavior. It stops short of describing permissions or failure modes.

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?

Two tight clauses, front-loaded with the format/action before the no-path behavior. No wasted words, though it is fragmentary rather than fully structured.

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 return values need not be explained, and annotations cover the safety profile. The main gap is the unexplained image_id parameter and lack of explicit contrast with the export sibling for an operation that can overwrite files.

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%, so the description must carry the load. It explains the path semantics (null path = overwrite current file) but says nothing about image_id, leaving one of two parameters completely undocumented.

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 states a specific verb and resource ('Guarda en formato XCF de GIMP') and its scope: saved as XCF with layers. This distinguishes it from the export sibling by format, but it does not name or explicitly contrast with gimp_export_image, so an agent must infer the distinction.

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?

It implies the usage context ('Sin path, guarda sobre su archivo .xcf actual') but never states when to choose this over gimp_export_image for saving to other formats. The guidance is inferred rather than explicit.

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