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

With no annotations, the description carries the full burden of behavioral disclosure, and it reveals nothing about side effects, output, access requirements, or read/write behavior. The phrase is just a noun list, not a statement of what happens when the tool is invoked.

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 short, but conciseness here is under-specification rather than efficient structure. It is a fragment that does not communicate what an agent needs to decide, so the single sentence does not earn its place.

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?

There are no annotations and no output schema, so the description must fully explain the tool's behavior and return value. It fails to explain what the tool does, returns, or requires, leaving the agent unable to correctly invoke or interpret it.

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 schema has zero properties and 100% schema coverage, so there are no parameters for the description to document. The baseline for a zero-parameter tool is 4, and the description adds no parameter information because none is needed.

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 offers a list of content areas ('Lead product, cash product, auth, MCP, x402') that vaguely suggests what the tool covers, but it never states a verb or what action the tool performs. The tool name implies 'discover', but the description alone does not establish a clear purpose or differentiate it from siblings like spl_catalog or spl_lab_auth.

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?

No guidance is given on when to call this tool versus alternatives. Sibling tools are not referenced, and no conditions, exclusions, or use-case context are supplied.

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