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

With no annotations the description carries the full burden, and it does disclose a non-obvious behavioral default (online panels only unless online_only is false) plus the shape of returned summaries. It omits auth/permission needs, pagination behavior, and rate limits, which leaves meaningful gaps for a 9-param search tool.

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 dense sentences with the resource and primary filters front-loaded and no filler. Slightly list-heavy in the middle but every clause maps to a capability or return field.

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?

No output schema exists, but the description compensates by naming the returned summary fields (Trust Score, stars, price from, order counter, age). Combined with the schema-documented page/limit bounds, an agent has enough to invoke it correctly; sort semantics and pagination guidance are the main remaining gaps.

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 only 33%, yet the description expands several params beyond the schema — market accepts country/language values or "api", query matches name or domain, and online_only's default effect is stated. It leaves page, sort, limit, and especially platform (whose meaning is only hinted in the schema) without added context.

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?

States a specific verb and resource ("Find SMM panels in the smm.guide catalog") and enumerates the filterable dimensions (name/domain, market, network, engine, verified owner). An agent can tell this is a discovery/search tool versus get_panel or compare_panels, though no sibling is named explicitly.

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?

Usage is implied rather than stated: the tool is for finding panels, and the final sentence hints at a default-online filter. There is no explicit when-to-use/when-not guidance or routing to siblings like get_panel for detail lookups.

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