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

With no annotations, the description carries the behavioral burden and provides useful signals: it edits an owned creation and 'Everyone sees the new version,' indicating public visibility of changes. It omits important mutation details such as whether fields are partially updated, whether changes are reversible, authentication/secret requirements, and what response to expect.

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 front-loaded sentence that states the core action first and then lists the kinds of changes. It is compact and every clause contributes either scope, capability, or visibility context.

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 an 18-parameter mutation tool with no annotations and no output schema, the description covers ownership and public visibility but leaves out important operational context like partial-update behavior and reversibility. The rich schema compensates for parameter details, but the behavioral gaps keep this at a minimum-viable level.

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%, so the schema already documents all 18 parameters and their constraints thoroughly. The description groups several parameters into natural operations such as rename, recolour, resize, move, and set description/glyph/spin, but it adds little constraint or syntax information beyond what the schema already provides.

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 gives a clear verb and resource: 'Reshape one of your own creations' and then enumerates concrete edit operations like rename, recolour, resize, and move. It is distinguishable from create/uncreate by implying modification of an existing owned object, but it does not explicitly name or contrast those sibling tools.

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 establishes that the tool applies to 'one of your own creations' and can be used 'at any time,' which gives basic context for when to use it. However, it does not mention alternatives such as create for new creations or uncreate for deletion, and it gives no exclusions or prerequisite guidance beyond ownership.

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