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

The annotations already declare readOnlyHint=true, destructiveHint=false, and idempotentHint=true. The description adds important behavior beyond the annotations: the tool opens nothing by itself, returns screens/buttons/fields as instructions, and requires separate browser actions. It does not detail error handling, but the key side-effect profile is clear.

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 purpose and an immediate clarification that the tool does not itself send anything. The final note about Ghost's API and MCP server status is contextual but slightly tangential; overall it remains 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 zero-parameter guide tool with annotations and no output schema, the description is largely complete: it states what the tool returns, that it has no direct side effects, and what to use next. It could mention prerequisites such as being logged into Ghost or having the Cloud Browser available, but those gaps are minor.

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?

There are zero parameters, so parameter semantics have little to document; the baseline is 4. The description appropriately does not invent parameter details that do not exist.

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 names a specific resource (Ghost newsletter) and clarifies that the tool returns step-by-step instructions rather than performing the send. The leading verb 'Send' is potentially misleading, but the second sentence explicitly corrects that and points to the cotlet_browser_* tools for execution.

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?

It gives clear usage context: use this tool to get Ghost newsletter-sending steps, then execute them with the cotlet_browser_* tools. It does not explicitly compare against sibling Ghost API tools such as ghost_create_draft_post or ghost_schedule_post, so some selection guidance is left implicit.

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