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

Annotations already declare destructiveHint=true, so the bar is lower. The description adds real value by spelling out exactly what gets overwritten (copy, pictures, clips, button/badge choices in any section sharing the layout) and that background is reported rather than painted—detail absent from the annotations.

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 OVERWRITES warning is correctly front-loaded, but the middle sentence is a long run-on that buries the delegation to uichemy_add_section. It earns its length on behavioral content but could be tighter and clearer.

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 destructive, no-output-schema mutation, the definition covers overwrite scope, the add_section routing, and the separate background step. The main gap is parameter documentation for projectId/pageName, but overall an agent has what it needs.

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 50%; the schema documents index and points savedId to uichemy_list_saved_sections, while pageName and projectId are undocumented. The description adds no parameter-level detail beyond implying the saved/layout relationship, so the baseline of 3 fits.

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 action (put a saved section into a page) and explicitly contrasts it with uichemy_add_section, the sibling it delegates to. It clearly distinguishes the insert-saved operation from plain section-adding, though the phrasing is circuitous.

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 routes the agent explicitly: insertion happens through uichemy_add_section, and background must be set separately with uichemy_set_section_background. These are named alternatives with conditions, though it never states when NOT to use this versus save_section/duplicate_section.

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