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

Annotations already declare destructiveHint=true, so the safety bar is lower. The description adds genuinely useful context: that roles/permissions can optionally be attached on join, that the effect is reversible by removing the user, and the underlying API endpoint. It does not address auth requirements or duplicate-membership behavior, and the 'reversible' framing sits in slight tension with the destructive hint.

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?

Three short sentences, purpose front-loaded, with the optionality and reversibility notes placed early. The trailing endpoint reference is mildly redundant but consistent with the service's style and costs little.

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 simple two-parameter tool with fully documented schema and no output schema, the description covers purpose, optional fields, and reversibility. It omits idempotency/duplicate-membership behavior and permission requirements, which are minor gaps rather than blockers.

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%, so org_code, users, roles, and permissions are already documented in the schema. The description only restates that roles and permissions are optional, adding no syntax or format detail beyond what the structured fields provide. Baseline 3 applies.

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 (add), resource (users), and scope (to an organization), plus the qualifier that only existing users can be added and roles/permissions may be attached. This clearly separates it from siblings like kinde_list_organization_users and kinde_grant_user_role_in_organization.

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 word 'existing' implies a prerequisite (the user must already exist), and the tool is implicitly the batch membership operation, but there is no explicit when-to-use/when-not or named alternative (e.g., grant_user_role_in_organization for single-role grants). Usage is only lightly implied.

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