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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=true, so safety is covered. The description adds real value beyond that: it discloses the returned fields (id, name, username) and the underlying endpoint (GET /users), which matters because there is no output schema.

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?

Two compact sentences that front-load the purpose and avoid filler. The trailing 'GET /users' is slightly redundant with the tool name but earns a small amount of API-mapping value; the phrase 'filters and values' is a touch ambiguous.

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?

With no output schema, the description usefully names the returned fields, and the schema fully documents all five optional parameters while annotations cover the safety profile. What remains thin is guidance on pagination interplay and differentiation from teamgate_get_user.

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%, with each of the five parameters documented in the schema (name, email, limit, offset, is_active), so baseline is 3. The description does not add syntax or semantic detail beyond the schema; the mention of owner_id is about consuming results, not about an input parameter.

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 and resource ('List the Teamgate users of the account') and even names the returned fields (id, name, username). It is clearly distinct from teamgate_get_user in intent, though it never names that sibling explicitly to reinforce the singular-vs-plural distinction.

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?

Provides downstream usage context ('Use the ids as owner_id filters and values'), which tells the agent what to do with the output, but gives no when-to-use vs teamgate_get_user guidance and no exclusions or prerequisites. Usage is implied rather than stated.

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