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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and closed-world behavior, so safety is covered. The description still adds real signal beyond that: results are "sourced" (attributed) and organized around shared "tasks and sectors," telling the agent what the comparison actually returns. It stops short of describing result ordering or length.

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?

One sentence, front-loaded with the action and resource, and it packs the cardinality, comparison mode, and shared-dimension detail without waste.

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 simple one-parameter read tool with full annotations and no output schema, the definition covers what it does and what the results contain (sourced listings, shared tasks and sectors). Only the peer-tool routing guidance is missing.

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 100% and the single parameter already documents "two to four tool slugs" with min/max and a slug pattern. The description restates the 2-4 range and slug format but adds no new syntax or semantic detail, so baseline 3 applies.

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?

"Get full sourced listings for two to four tools side by side" gives a concrete verb and resource plus the cardinality constraint, and the "side by side" framing distinguishes it from single-tool siblings like get_tool. It does not name a sibling explicitly, so differentiation is implied rather than stated.

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?

The comparison framing implies when to use it (multi-tool evaluation), but there is no explicit when-to-use, when-not-to-use, or pointer to an alternative such as get_tool for a single lookup. Guidance is inferable but not spelled out.

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