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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so safety is covered. The description adds value beyond that by disclosing the shape of the content returned (server mechanics, tool inventory, and limits/constraints), which is exactly the behavioral context an agent needs for a guide tool. It stops short of stating whether the guide can become stale or how large the limits section is.

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?

A single front-loaded sentence with zero filler; the label 'Guide:' immediately frames the artifact and the rest enumerates its scope. Nothing here could be trimmed without losing information.

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, no-output-schema onboarding tool whose annotations already carry the read-only safety profile, the description is nearly sufficient. It would be complete with one clause positioning it as the entry point relative to the other meta-tools (describe_tool, get_tool_schema, search_tools).

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 tool takes zero parameters, so per the rubric the baseline is 4. There is nothing for the description to clarify or compensate for on this dimension.

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 artifact (a guide) and enumerates its contents: how the server works, which tools exist, and what the limits are. That distinguishes it reasonably from action-oriented siblings like create_campaign or get_performance, but it does not explicitly separate itself from adjacent meta-tools such as describe_tool, get_tool_schema, or search_tools.

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?

Usage is implied rather than stated: an onboarding guide is naturally the first call, but the description never says 'call this first' or when to prefer describe_tool/get_tool_schema/search_tools instead. No exclusions or prerequisites are given.

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