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

With no annotations and no output schema, the description carries the full burden and does disclose two useful things: the auth requirement (signed-in session only) and the shape of each returned record. It says nothing about ordering, volume/limits, or whether revoked or expired assistants appear — gaps that matter for a listing endpoint.

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?

A single dense sentence with the access constraint front-loaded before the resource description. Every clause earns its place, though the colon-and-comma construction is slightly compressed for readability.

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 no-parameter, no-annotation list tool with no output schema, the description covers what is listed and what each item contains, which is close to sufficient. Missing only ordering/completeness notes about the result set, a minor gap for a tool this simple.

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 tool takes zero parameters, so the schema has nothing to explain and the baseline is 4. The description correctly adds no parameter chatter, and the field list it provides describes output rather than input.

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?

States a specific verb (list) and a specific resource (AI assistants connected to your account through OAuth), plus the fields each entry carries (workspace, scopes, connected/last-used timestamps). It largely distinguishes itself from siblings like assistants_clients_list or assistants_authorize, though it never names an alternative explicitly.

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?

"Signed-in session only" implies the prerequisite and the context in which the call is valid, which is real guidance. However, it never says when to prefer this over assistants_clients_list, assistants_preview, or assistants_revoke, nor what it excludes — usage must be inferred.

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