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

Annotations provide readOnlyHint=true and destructiveHint=false. The description adds that it checks published emails and delivery connection without sending email or changing data, which aligns with and supplements the annotations. No contradictions.

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?

Three sentences efficiently convey purpose, permission, and reference. The API reference line is slightly extraneous but not excessive. The key information is upfront.

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?

Given the simple input and presence of an output schema, the description covers the tool's purpose, non-destructive nature, and scope. It lacks sibling differentiation but is otherwise adequate for a preflight check tool.

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 schema covers the single parameter 'sequence_id' with a description. The tool description does not add additional meaning beyond implying the parameter is the target sequence. With 100% schema coverage, baseline 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 it checks the saved Sequence, its published emails, and email delivery connection without changing data or sending email. The verb 'Checks' and resource 'saved Sequence' are specific, and the scope is well-defined.

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 mentions the tool is read-only and requires permission 'sequences:read', but it does not provide explicit guidance on when to use this tool versus other preflight tools (e.g., automations_preflight, broadcasts_preflight) or alternatives like sequences_get.

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