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

With no annotations, the description carries the full burden. It conveys that the tool is a read-only discovery action, showing available tools and workflows. However, it does not explicitly disclose any limitations, side effects, or the exact nature of the output, though the simplicity of the tool mitigates the risk.

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 a single, clear sentence with a redundant French translation. It is front-loaded with the purpose and usage instruction, but the translation adds length without new information, preventing a perfect score.

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 zero-parameter, low-complexity tool with no output schema, the description fully covers what the tool does and when to call it. The lack of output schema is compensated by the description's explicit reference to what users will see (available tools and workflows).

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?

The tool has 0 parameters, so the baseline is 4. The description adds no parameter-specific information because none exist, which is appropriate.

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 clearly states the tool's function: 'See all available free SEO tools and recommended workflows.' It also specifies the action ('See'/'Discover') and the resource, distinguishing it from sibling tools which are individual SEO analyzers. The instruction 'Call this first' further clarifies its role as an entry point.

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 description provides explicit usage guidance with 'Call this first,' indicating when to invoke this tool (before other sibling tools). It does not explicitly state when not to use it or name alternatives, but for a discovery tool, this context is sufficient.

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