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

Annotations already declare readOnlyHint=true and the description's 'GET' framing is consistent with that. It adds genuinely useful return-shape information (client id and login URLs) since no output schema exists, but says nothing about not-found/error behavior or auth requirements.

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?

Front-loaded with the action and resource in the first sentence, and the return fields come immediately after. The trailing 'Kinde: GET /api/v1/applications/{application_id}' line is largely redundant restatement, a minor waste.

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 tool with a readOnly annotation and no output schema, the description covers the purpose, the retrieval key, and the notable response fields. Only error/not-found semantics are absent, which is a small gap at this complexity.

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 the single parameter is fully documented in the schema, so the baseline is 3. The description's 'by id' adds no syntax or format detail beyond what the schema already conveys.

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 (fetch), resource (application), and retrieval mode (single, by id), which distinguishes it from the sibling kinde_list_applications without naming it. It also names the payload contents. It stops short of explicitly contrasting with the list sibling, so it isn't a 5.

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?

Uses 'single ... by id' which implies the tool is for fetching one known application rather than enumerating, but never states when to prefer this over kinde_list_applications or what to do if the id is unknown. Usage is inferable, not stated.

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