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

No annotations are present, so the description carries the transparency burden. It discloses two important behaviors: partial update ('only provided fields are changed') and upsert behavior ('Creates preferences if none exist'), which go beyond a generic 'update.' It does not mention auth requirements, return value, or error conditions, but the core side effects are clearly stated.

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, starts with an action verb, and contains no filler. Every clause earns its place by adding either purpose, behavior, or upsert semantics.

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 tool with 12 parameters and no output schema, the description is too sparse. It omits return value, required authentication (apiKey), and parameter-specific details, so an agent cannot fully predict the result or formulate the call without additional inference from property names.

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?

With 12 parameters and 0% schema description coverage, the description needed to compensate, but it only describes the overall effect ('Enable or disable communication channels') and the partial-update rule. It does not explain individual parameters such as apiKey, orgSlug, phoneRequiredMessage, or the various confirmation/reminder flags, leaving the agent to infer from property names.

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 opens with the specific verb 'Enable or disable' and identifies the resource as 'communication channels and features for an organization.' It also distinguishes this mutation from retrieval/send siblings by stating 'Partial update' and 'Creates preferences if none exist,' making the purpose unambiguous.

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 the tool is for updating organizational communication preferences, and the partial-update/upsert details provide context for invocation. However, it does not explicitly name alternatives or state when not to use it (e.g., versus comms_get_preferences or comms_send_message), so guidance is implied rather than explicit.

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