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

Adds substantial behavior beyond the annotations: it SPENDS 1 CHART CREDIT, the unconfirmed call runs nothing and returns a quote naming the matched target, and generation only happens on a second call with confirm: true. This is exactly the cost/commitment disclosure an agent needs before invoking a non-idempotent, billable write.

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?

Three sentences, front-loaded with purpose followed by cost/confirm mechanics and usage triggers, with essentially no filler. Minor redundancy: the confirm two-step is restated in the confirm parameter's own schema description, so a little space is spent twice.

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 billable, two-phase tool with no output schema, it covers the trigger, the cost, and the confirm handshake, plus what the unconfirmed call returns. It does not say how the finished chart is retrieved (presumably via claimhit_get_result), leaving one small linkage gap.

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 all three parameters are already documented in the schema, including the confirm gating semantics and the target_name format examples. The description reinforces the confirm flow but adds no new syntax or format meaning, 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?

States a specific verb and resource ('Generate an AI Hit Chart') plus its scope ('for a specific target (product or standard) from a previous search') and defines what a Hit Chart is. This clearly separates it from siblings like claimhit_search (which finds targets) and claimhit_get_result (which retrieves output).

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?

Provides explicit trigger conditions ('Use this when the user asks to chart, map claims, or analyse a specific target in detail') and spells out the two-step confirm precondition. It does not name a competing sibling or state when NOT to use it, so it falls short of full alternative routing.

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