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

The annotations already declare read-only, idempotent, open-world, and non-destructive behavior, so the safety profile is covered. The description adds useful behavioral context by specifying that the result is a compact index containing type, title, tier, use-case, and parameter names, though it does not discuss pagination, freshness, or rate limits.

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 front-loaded with the tool’s purpose and output shape, followed by filters, workflow role, and a read-only note. It is compact overall, though the read-only sentence is somewhat redundant with annotations and phrased awkwardly.

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 read-only catalog listing tool with full schema coverage and rich annotations, the description is complete enough: it explains the returned compact index, the available filtering dimensions, and the downstream workflow. No output schema is present, but the description names the key returned fields.

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 input schema already documents all four parameters. The description restates the main filters—tier, category, and search by intent—but adds little syntax or semantic detail beyond the schema, and it does not mention site_id.

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: it lists Elementor widgets from a curated catalog. It also defines the returned index shape and situates the tool as step 1 in the discover → get-widget-schema → add-widget workflow, distinguishing it from the schema retrieval sibling.

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 gives clear usage context: filter by tier, category, or intent-based search, and use it as the first step before getting a widget schema and adding a free/pro widget. It does not explicitly state exclusions or compare against every sibling, but the intended workflow is clear.

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