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

Annotations already establish that this is a non-read-only, non-idempotent, non-destructive operation, and the description adds little behavioral context beyond the word 'Register.' It does not disclose side effects, required permissions, or what the response contains, so an agent cannot anticipate the operation's consequences.

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 description is a single front-loaded sentence with no filler or repetition; it is concise and easy to parse. More substance could be added, but the brevity itself is not a structural flaw.

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 write operation with an opaque required body and no output schema, this description is incomplete: the payload shape, preconditions, and result are all unspecified. It gives just enough to identify the task but not enough to call the tool correctly in practice.

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 0% and the sole parameter 'body' is an opaque additionalProperties object. The description never hints at expected fields or structure, leaving an agent unable to construct a meaningful payload. 'Partner-managed rights holder' is too vague to compensate for the missing schema documentation.

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 ('Register') and a specific resource ('a partner-managed rights holder'), clearly identifying what the tool does and distinguishing it from siblings like create_quote or enroll_agent. It does not define what a rights holder is, but the core purpose is unambiguous.

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 tool versus alternatives; the single sentence is only a purpose statement. Siblings such as enroll_agent and create_work might overlap from an agent's perspective, and no conditions, prerequisites, or exclusions are given.

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