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

Annotations already declare readOnlyHint=true, so the safety profile is covered. The description adds valuable behavioral context: it explains the output is a share/proportion, notes it's a 'single-entity synthesis' (B1 pricing), and mentions pricing model. It does not contradict annotations and provides useful details about the nature of the result.

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, dense sentence with a dash and technical jargon ('UNDERSTANDING — diffusion'). It front-loads a category label rather than the core action, but it is efficient and conveys the key concept without excessive length. Slightly jargon-heavy but still readable.

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 read-only tool with 3 optional parameters and no output schema, the description explains the core output (share per dimension) and pricing context. It does not specify the exact return format or pagination behavior, but given the tool's simplicity and the presence of page/limit parameters, the description is largely sufficient.

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 only 33% (only 'context' has a description). The description does not mention page, limit, or context at all, so it fails to compensate for the low schema coverage. An agent gets no guidance on how pagination works or what the context parameter is for beyond the minimal schema text.

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: for each agent-readiness dimension, it returns the share of scored providers that satisfy it. It also adds context about the denominator's importance, distinguishing it from sibling tools like get_agent_readiness (single provider) and find_agent_readiness (search). The purpose is specific and non-tautological.

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 implies usage when needing the proportion of providers meeting a dimension ('the denominator every claim needs'), but it does not explicitly name alternatives or conditions for when to use this versus get_agent_readiness or find_agent_readiness. It gives context but no explicit when-not guidance.

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