Smartlead: list email accounts

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

Beyond the annotations, the description explicitly discloses read-only behavior, no credit consumption, no state modification, no email sending, and no destructive actions. It also notes that mailbox addresses are personal data, adding a privacy consideration not present in the structured metadata.

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 front-loaded with the core purpose and all information is concise. There is slight redundancy with 'Free and read-only' repeating part of the safety block, but overall each sentence provides unique value.

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 description covers the endpoint, safety profile, and a privacy note. It does not explain return values or pagination, but the presence of an output schema and the schema's limit/offset parameters makes this unnecessary for a read-only list operation. The description is sufficiently complete for its complexity.

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?

The input schema has 100% parameter coverage, so the schema already documents each parameter. The description adds only a high-level mention of warmup, SMTP, and provider filters without adding per-parameter syntax or details. The 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 clearly states 'List connected sending accounts with warmup, SMTP and provider filters', using a specific verb and resource. It is easily distinguishable from sibling tools like smartlead_list_campaigns, which focus on campaigns rather than email accounts.

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 description implies usage context by mentioning the resource type and filters, but it does not explicitly state when to use this tool versus alternatives, nor does it name other tools for related tasks. It provides no exclusions or explicit when-not-to-use guidance.

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