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

Annotations already declare readOnly=false, idempotent=false, openWorld=true, destructive=false. The description adds material behavior beyond that: cost per call, free on failure, Okta vs Entra activation flow, and that Conecto never sees a password. That is strong disclosure.

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 purpose is front-loaded in the first sentence, and the remaining sentences carry activation, password, and cost details without filler. Length is appropriate for a create-user operation.

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?

The description covers purpose, activation behavior, and cost, but with no output schema and only 33% parameter coverage it never explains required name fields, duplicate-email handling, permissions, or what the call returns. Adequate but incomplete for a mutation tool.

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 coverage is 33% and the description mentions only title, department, and groups; it omits required first_name and last_name and gives no syntax/format beyond the schema. It adds some field meaning but does not compensate for the coverage gap.

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 uses a specific verb ('Open') and resource ('joiner's account in the directory') and scopes it to onboarding with title/department/groups. It does not explicitly distinguish from directory_update_user or admin_save_person, so it stops short of 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?

It implies use during joiner onboarding and describes environment-specific activation, but never states when to use it instead of directory_update_user or admin_save_person, nor any exclusions. Usage is inferable but not explicit.

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