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

Annotations already declare destructiveHint=true and readOnlyHint=false, so the safety profile is partly covered. The description adds nothing beyond that: it does not say what is overwritten, whether the change is reversible, how the free-form 'the way they asked' request is interpreted, or that approval may be needed for a destructive edit.

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 short sentences and the core purpose is front-loaded, which is good. However, the trailing 'Used by the card' consumes a full sentence while conveying almost nothing actionable, so the brevity reflects under-specification rather than economy.

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. But for a destructive, natural-language-driven mutation with a nested element object and 50% schema coverage, the description omits the behavioral and parameter context an agent needs to invoke it correctly rather than a sibling.

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%: path and request are self-described, but site_id and the nested element object (tag/text/classes) carry no schema descriptions. The description does not compensate, never mentioning site_id, the element structure, or that 'element' identifies the clicked node. With a nested object in the required set, this is a meaningful 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?

The verb 'changes' and the target 'part of a WebTwizz site the user clicked in the card preview' are stated, but the resource is described obliquely rather than named (element HTML/text/classes). Critically, it does not distinguish itself from the sibling edit-text or edit-site, so an agent cannot tell which editor to invoke from the description alone.

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?

'Used by the card' is a caller note, not usage guidance for an agent. There is no when-to-use vs edit-text/edit-site, no prerequisites, and no exclusions, despite several overlapping edit siblings in the namespace.

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