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

Annotations already declare readOnlyHint=true, openWorldHint=false, and destructiveHint=false, so the safety profile is covered. The description adds value by disclosing the shape of what comes back (names, operation groups, usage hints), which matters because there is no output schema.

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 tightly packed sentence with the tool's purpose and its return framing front-loaded. No filler, though the phrasing is somewhat dense with three separate noun phrases.

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?

With no output schema, the description partially compensates by sketching return contents, and the read-only annotations remove the need to explain side effects. An agent has enough to invoke this correctly, though permissions or rate/size limits are unstated.

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 single parameter includeExamples is documented at 100% coverage in the schema, including its default. The description does not mention it or add syntax beyond the schema, so the baseline 3 for high coverage applies.

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?

States a specific verb ("Describe") and resource ("MCP tool capabilities") and frames the outcome as names, operation groups, and usage hints. It implicitly contrasts itself with the business endpoints in the sibling list (find_*, list_*, count_*), though it does not name a specific sibling.

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?

Provides clear timing guidance: call it to "self-discover available routes before calling business endpoints." This gives an agent a concrete trigger condition, but it names no explicit alternative or exclusion case, so it falls short of full 5-level routing guidance.

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