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

There are no annotations, so the description carries the full burden of behavioral disclosure. It does add useful context by saying the tool returns a 'public snapshot' and a 'canonical SENTn URL,' implying a read-only public-info retrieval. However, it never explicitly states that the operation has no side effects, and it does not mention what happens if the ID does not exist or is invalid.

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, front-loaded sentence. Every clause adds essential information: the precondition, the resource, and the return value. There is no filler or redundancy.

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 retrieval tool with no output schema, the description covers the main needs: when to use it, what the parameter is, and what the tool returns. It lacks explicit error handling or read-only guarantees, but these are less critical for such a small, focused tool.

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 0%, so the description must compensate. It does add meaning by identifying the parameter as a 'SENTn opportunity ID,' which is crucial for correct invocation. But it does not elaborate on where to find this ID or how it relates to the schema's pattern constraints, leaving some room for misinterpretation.

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 tells an agent exactly what the tool does: given a known SENTn opportunity ID, it returns the public snapshot details and canonical SENTn URL. It uses a clear conditional ('when an agent already knows a SENTn opportunity ID') and names the specific resource (opportunity) and expected outputs, making it easily distinguishable from search_opportunities.

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 explicitly states when to use the tool: when the agent already has the opportunity ID. This implies that search_opportunities should be used when the ID is not known, but it does not name the sibling or explicitly state the exclusion. The condition is clear enough for an agent to select this tool correctly.

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