manage_profile_hints

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

With no annotations provided, the description must carry the full burden of behavioral disclosure. It explains the tool acts on a cache and implies modifications via set/clear, but doesn't explicitly describe side effects on the auto-switch middleware, persistence, or any risks of clearing all hints. The schema covers some details, but the description is not highly transparent.

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 two sentences long, front-loaded with the tool's purpose, and defines key terms without any fluff. Every sentence earns its place.

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 management tool with a small schema and no output schema, the description provides sufficient context: what it does, what the cache is, and when to use it. It doesn't cover every edge case but is complete enough for an agent to invoke correctly.

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%, and each parameter has a clear description. The tool description adds a conceptual model (resourceKey → profileName cache) that aids understanding, but it doesn't add significant detail beyond the schema. Baseline of 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 clearly states the tool's function with a specific verb and resource: "Inspect / set / clear profileHints." It also defines what profileHints are (resourceKey → profileName cache), distinguishing it from all sibling tools which handle messaging, documents, calendars, etc.

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 provides a concrete use case: "Useful when a hint goes stale (e.g., a profile lost access to a doc)." While it doesn't explicitly mention alternatives, there are no sibling tools with similar functionality, so the context is clear and sufficient.

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