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

Annotations already indicate readOnlyHint=false, idempotentHint=true, and destructiveHint=false, which convey that this is a non-destructive mutation. The description adds nothing beyond the word 'update,' which is consistent with annotations. It fails to disclose the meaning of idempotencyKey, expectedVersion, or any side effects, leaving the behavioral profile largely unspecified.

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 sentence, so it is technically concise, but it lacks any structure or front-loading of key information. It provides no bullet points, no parameter context, and no usage hints. It is under-specified rather than appropriately concise, offering zero actionable detail.

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 complex mutation tool with 7 parameters, required idempotency and versioning, and a nested object, the description is woefully incomplete. There is no output schema to compensate, and the description fails to explain return values, conflict behavior, or the meaning of the operation. An agent would have no idea how to invoke this tool correctly.

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 description mentions no parameters at all. None of the seven parameters (projectId, taskId, idempotencyKey, expectedVersion, details, sessionId, executionId) are explained, and the nested 'details' object is entirely uninterpretable. The description completely fails to compensate for the lack of 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 states a verb ('update') and a resource ('hosted inbox claim'), but does not clarify what an inbox claim is or how it relates to other inbox tools like inbox_start or complete_inbox_task. 'Privacy-filtered project metadata' is opaque and does not anchor the tool's purpose in a way that distinguishes it from siblings.

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 description does not mention any conditions, prerequisites, or why one would choose inbox_claim over other inbox-related operations. No exclusions or sibling references are provided.

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