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

Annotations already declare this a safe, idempotent, non-destructive read with a closed world, so the description does not need to restate safety. It does add genuinely useful context beyond that: results come from WhatsMood editors and the community, and each list carries name, description, city, mood, item count and URL. Missing is any note on result ordering or what happens when the query is empty, but for a read-only search this is solid.

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 core sentence is front-loaded with the action and scope, and the examples earn their place by making the resource concrete. The trailing Turkish line is redundant with the title and slightly dilutes the ending. Overall it is well under the size where trimming would matter.

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?

With no output schema, the description usefully compensates by naming the fields each list returns. All four parameters are optional and the limit range is in the schema, so complexity is low and the description covers what an agent needs to call it correctly. The only real gap is result ordering and empty-result behavior.

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 every parameter's meaning and default is already documented and the baseline is 3. The description contributes marginally by showing sample query strings that illustrate what keyword matching looks like in practice. It adds nothing about how city and mood interact when combined.

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 opens with a specific verb and resource ("Search published, curated lists on WhatsMood") and grounds it with two concrete example queries, so an agent immediately knows the domain. It enumerates the returned fields, reinforcing scope. What it lacks is any explicit differentiation from the sibling get_public_list, which presumably fetches a single list by identifier.

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?

Filter dimensions are implied through the examples and the listed attributes (city, mood, keyword), so an agent can infer the intended search patterns. There is no explicit statement of when to prefer this over get_public_list or the other search siblings, and no guidance on what to do when no results match. The Turkish line "TR: Herkese açık hazır listeler" merely restates the name rather than adding usage context.

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