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

With no annotations provided, the description carries the full burden of behavioral disclosure. It clearly states that the lookup 'never executes remote tools' and enumerates the output categories, which is valuable behavioral context. It could additionally disclose whether the lookup is read-only or performs external network calls, but the current disclosure is solid.

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 tightly structured: it leads with the core action, lists return contents, gives concrete examples, and ends with a key safety property. Every sentence earns its place and there is no filler.

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 single-parameter lookup tool with no output schema and no annotations, the description covers the essential context: what the tool searches, what it returns, example inputs, and a safety caveat. It is nearly complete; the only minor gap is how fuzzy or exact the matching behavior is, but examples largely cover that.

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 100%, so the schema already fully documents the single 'query' parameter. The description adds useful examples of query shapes but does not meaningfully expand on parameter semantics beyond what the schema provides; the baseline 3 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 states a specific verb ('Look up') and a specific resource ('WagerX Agentic Gambling Index'), and enumerates exactly what the tool returns: endpoints, provenance, evidence status, access model, and limitations. It also gives concrete example queries, which strongly distinguishes it from the casino-focused sibling tools.

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 says 'Use for questions such as...' and provides three representative query types. It does not explicitly name alternatives or give exclusion criteria, but the sibling tools are clearly casino-review related, so the intended domain is reasonably clear.

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