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

The description adds meaningful behavior beyond the annotations: nullable targetDate/description can be cleared with null, and storyIds is a set-replace operation requiring ticket keys or UUIDs from the same project. Annotations already cover destructive and idempotent hints, so the remaining gap around permission requirements or status-transition side effects is acceptable.

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 concise sentences front-load the core operation and then provide the most important parameter semantics. Every clause earns its place, with no redundant preamble.

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 destructive, idempotent mutation with seven parameters and no output schema, the description covers the key update semantics an agent needs to invoke it correctly. It leaves minor gaps around partial-update behavior for omitted fields and whether status changes have transition constraints.

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?

With only 43% schema description coverage, the description compensates well by listing the modifiable fields and explaining null-clearing for targetDate and description plus set-replace semantics for storyIds. It does not add detail for status enum values or length limits, and some storyIds/targetDate semantics duplicate schema descriptions.

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 states a specific verb and resource: 'Patch fields on an existing release', followed by the exact fields that can be updated. It is clearly distinct from create_release and delete_release in practice, but it does not explicitly name or differentiate itself from sibling tools.

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 'Patch fields on an existing release', so an agent can infer this is for partial updates. However, there is no explicit guidance on when to use this versus create_release, delete_release, restore_release, or update_sprint/update_story alternatives.

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