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

Annotations already state readOnlyHint=false and destructiveHint=false, so the mutation profile is covered. The description adds value beyond that by disclosing the ownership side effect (the caller becomes owner) and by stating what the call returns (the organization id), which matters because there is no output schema. It does not mention whether duplicate names are rejected, which is a remaining gap given idempotentHint=false.

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 sentences, zero filler. The purpose is front-loaded and the downstream-chaining hint follows immediately, so an agent gets both what it does and what it gets back in a single read.

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 create tool with annotations and no output schema, the description covers purpose, side effect, and return value adequately. The only missing piece is failure behavior, such as what happens when an organization with the same name already exists, which is relevant because the operation is non-idempotent.

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 single `name` parameter is fully documented in the schema, including the 80-character limit, so the baseline is 3. The description adds no additional meaning about the parameter's format, uniqueness expectations, or constraints beyond what the schema already says.

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 names a specific verb and resource ("Create a new organization") and adds a meaningful scope detail: the authenticated user becomes the owner. It does not explicitly name siblings like update-organization-tool or delete-organization-tool, but the verb alone makes the create-vs-modify-vs-remove distinction obvious.

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?

Usage is implied by the verb rather than stated: no when-to-use or when-not-to-use guidance, and no named alternatives. The one genuinely useful hint is that the returned id can be fed as `organization_id` into later calls, which tells an agent this is usually the first step of a workflow.

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