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

Annotations already indicate this is a mutation (readOnlyHint=false). The description adds behavioral detail: the ownership transfer only occurs after the client logs in with the invited email, and the agent may remain a collaborator based on the parameter. This goes beyond the annotations by clarifying the post-claim state. No contradiction found.

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 with no unnecessary words; the critical constraint ('Agency mode only') is front-loaded, followed by the core action and a key behavioral consequence. Every sentence earns its place.

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?

Despite having 6 parameters and no output schema, the description, combined with full schema documentation, provides enough for correct invocation. It clarifies the ownership transfer timing and existing-app requirement. Minor gaps like how the link is delivered are not essential for calling the 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 description coverage is 100%, so all six parameters are documented in the schema. The description does not add additional semantic context beyond the schema, such as relationships between parameters or practical examples. Baseline of 3 is appropriate.

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 explicitly states the action (create), the object (client claim link), and the context (agency mode, existing app owned by agent). It clearly distinguishes from sibling tools like agency_create_client_app by focusing on the claim-link transfer mechanism. The verb-resource pairing 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?

It mentions 'Agency mode only' as a usage constraint and specifies that the app must already exist, which is helpful. However, it does not explicitly name alternative tools or describe scenarios where this tool should not be used, leaving some routing to inference.

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