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

Annotations already indicate readOnlyHint, idempotentHint, and destructiveHint=false. The description adds useful context beyond annotations by explicitly stating that the tool never charges and returns an MPP-enabled HTTP request, which clarifies that the tool does not execute the purchase.

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 extremely concise with two sentences that each add value: the first states the core behavior, and the second adds the critical financial safety clarification. There is no filler or redundancy.

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?

The return value is partially described as an exact MPP-enabled HTTP request, but the input 'request' is a black box with no schema descriptions, examples, or hints. With no output schema and a nested object parameter, the description is not sufficient for an agent to construct a valid call.

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 only parameter 'request' is an opaque object with additionalProperties. The description provides no field-level meaning, examples, or constraints, and merely reuses the word 'request' without explaining what the object should contain.

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 behavior: validates the request and returns an exact MPP-enabled HTTP request, while also clarifying that it never charges. The resource is implied by the title 'claim-audit purchase,' making the purpose clear even though it does not explicitly compare itself to 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?

There is no guidance on when to use this tool versus livingstack.prepare_team_local_purchase or livingstack.agent_offers. The description implies it is for preparing a signed request rather than executing it, but it never states exclusions, prerequisites, or alternatives.

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