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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so safety is covered. The description adds useful behavioral context beyond those annotations by disclosing that the returned pack includes allowlisted facts, closure status, server-generated typed actions, and the caller's own past actions with the entity. This helps an agent understand the tool's personalized, consolidated nature.

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 sentence and mostly front-loaded, immediately establishing that the tool is a compact action pack for one entity. The list of included content is dense but relevant, with no filler. The main cost is jargon like 'allowlisted facts' and 'server-generated typed actions', which slightly reduces clarity but not brevity.

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 one-parameter, read-only tool, the description provides a reasonable overview and names the categories of returned content. However, with no output schema, it leaves the exact shape and meaning of 'typed actions' and 'allowlisted facts' underspecified. An agent might still need additional context to confidently interpret the response.

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?

The schema has one required parameter, entity_id, with 0% description coverage. The description refers to 'ONE entity' and 'this entity' but does not explain what form entity_id should take, how to obtain it, or any constraints. With schema coverage that low, the description needed to compensate and did not.

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 conveys that this tool retrieves a consolidated bundle of information and actions for a single entity, listing specific contents like allowlisted facts, closure status, and past actions. It does not use an explicit verb like 'retrieves' or 'returns', and it does not directly name a sibling to distinguish from, but the resource and scope are clear.

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 phrase 'everything an agent needs to act there without re-reading full pages' implies this is meant for entity-level action contexts. However, it gives no explicit when-to-use or when-not-to-use guidance, nor does it compare itself with closely related siblings such as get_entity or get_details. Usage context is suggested but not fully specified.

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