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

Annotations already declare destructiveHint=true and idempotentHint=true, so the safety profile is covered. The description adds genuine behavioral value by spelling out the partial-update semantics: named fields are overwritten and lost, while omitted fields retain current values. This clarifies exactly what 'destructive' means here, though it says nothing about permissions or error behavior.

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 with no wasted words, but the structure is slightly off: it leads with overwrite semantics before identifying the operation, and the third sentence restates what the first already established. Merging the first and third sentences would front-load the purpose more effectively.

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 two-parameter mutation tool with no output schema, the combination of rich annotations (destructive, idempotent), full schema coverage, and the description's partial-update semantics is nearly sufficient. The only shortfall is the absence of any precondition or permission context, which is a minor gap given the annotation coverage.

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 both parameters are already documented in the schema, which sets the baseline at 3. The description reinforces optionality ('every field is optional; omitted keeps current value') but adds no syntax or format detail beyond what the schema already declares.

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 (update) and resource (an existing organization), so the agent knows exactly what operation this performs. It does not explicitly name or differentiate itself from sibling update-*-tool variants, but the resource is unambiguous in the name and description.

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?

There is no guidance on when to use this versus alternatives such as get-organization-tool, create-organization-tool, or delete-organization-tool. The sentence 'Update an existing organization' implies the pre-existing-record precondition but never states it as a rule or routes the agent to a sibling.

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