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 explicitly reveals key behaviors: omitted fields retain current values, custom_field entries are merged key-by-key, and multiple named profiles are allowed. It does not cover errors, return values, or permissions, but the disclosed partial-update and merge semantics are critical for correct invocation.

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 concise sentences, each carrying distinct value: the core action, the partial-update rule, and the merge/multiple-profile behavior. No fluff; information is front-loaded with the action first. It is efficiently structured and easy to scan.

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?

Given the nested field object and no output schema, the description covers the essential semantics needed to call the tool correctly: it explains how fields are applied, how custom_field merges, and that profiles are named and can be multiple. It does not mention error conditions or return values, but these are not critical for basic usage and are partly covered by the schema. Overall, it is complete enough for an agent to invoke it without confusion.

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 coverage is 100%, so the schema already documents both parameters. The description adds value by explaining the partial-update behavior ('Fields omitted... keep their current saved value') and the merge semantics for custom_field, which the schema does not mention. It also advises to 'pass only what changed,' going beyond the schema.

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 action (creates or updates) and the resource (a named site profile for this account). It distinguishes itself from sibling setters like set_adminpageset or set_github by specifying the profile resource, though it does not explicitly name alternatives. The purpose is unambiguous and not a tautology.

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: you use this tool when you need to create or update a named site profile, and it provides useful context about multiple profiles. However, it does not explicitly state when not to use it or mention alternatives (e.g., get_siteprofile for retrieval). Guidance is inferred rather than direct.

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