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

The description adds an important behavioral requirement: the agent must obtain principal authorization before payment. No annotations exist, so this disclosure is valuable. However, other potential behaviors (e.g., idempotency, error handling) are omitted.

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 wasted words. The first sentence delivers the core purpose, and the second adds a critical usage constraint. Information is front-loaded and efficient.

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 simple tool with one parameter and no output schema, the description adequately covers purpose and a key behavioral requirement. It does not describe the return value format, but a URL is standard. Minor gap: no mention of error cases or idempotency.

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%, meaning the description provides no additional parameter information beyond what's in the schema. The enum values (builder, agency) are self-explanatory, but the description misses an opportunity to clarify their meaning.

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 clearly states the verb 'Return' and the resource 'official Stripe checkout URL for a LeadProof plan', making the tool's function unambiguous. It distinguishes itself from sibling tools by focusing on payment checkout.

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?

No explicit guidance on when to use this tool versus alternatives like get_leadproof_trial or request_leadproof_handoff. The description mentions an authorization requirement, but lacks context for selection among siblings.

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