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

Annotations declare destructiveHint=true, openWorldHint=true, and readOnlyHint=false, so the agent knows this is a destructive, open-world write operation. The description adds almost no behavioral context beyond the annotations — it doesn't explain what gets destroyed, what permissions are needed, whether this is idempotent, or what the lead creation entails.

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 that states the core action and outcome with zero waste. It's appropriately sized for the tool's complexity.

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 tool has 4 parameters (2 required), no output schema, and annotations that flag it as destructive and open-world. The description doesn't explain what happens on success or failure, whether the domain verification is synchronous, or what the unauthenticated lead means for subsequent steps. For a signup initiation tool, this leaves significant gaps.

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 75%, so most parameters are documented in the schema (email, domain, monthlyPageviews). The description doesn't add any parameter details beyond what the schema provides, leaving the baseline score of 3 for high schema coverage.

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 verb (verify domain, create lead) and resource (Sulvo signup step 1), clearly indicating it's the initial step of the signup flow. It's distinguishable from siblings like create_sulvo_signup_account or apply_for_sulvo_account, though it doesn't explicitly contrast with them.

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?

The phrase 'normal Sulvo signup step 1' implies this is the starting point of the signup process, but there's no explicit when-to-use guidance, no mention of alternatives like apply_for_sulvo_account, and no prerequisites such as needing the domain or email to be valid.

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