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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=false, so safety is covered. The description adds real value beyond that: it names the report structure (setup, goldenPath, per-step humanSummary, nextTool, fixUrl, messageDe/messageEn) and explains that checkRender extends the probe to the composer/rasterizer path. It says nothing about latency or cost of the render probe, which would complete the picture.

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 purpose and the checkRender guidance are front-loaded, but the full German text is repeated verbatim in English, roughly doubling length with no added information. The underlying content is dense and useful; the packaging is wasteful.

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?

There is no output schema, so the description must carry the return contract, and it does: setup prerequisites, goldenPath ordering on new accounts, and the machine-readable versus human-facing fields. The only gap is the undocumented 'reasoning' input, which an agent must use without guidance.

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?

Schema coverage is 50%: checkRender is already documented in the schema, and the description reinforces it with a concrete usage scenario. The 'reasoning' parameter is undocumented in both the schema and the description, so half the surface remains unexplained and the description does not fully compensate.

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 states a concrete verb and scope: it verifies the partner token and the end-to-end processing chain and reports setup readiness. That is far more specific than the generic name mcp_health suggests. It does not, however, position itself against close siblings such as setup_status_app or setup_fix_link, so an agent must infer the difference.

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 a clear usage context – run it to know which prerequisite is missing and which step comes next – plus an explicit conditional: set checkRender to true before building a template that will be checked as an image. It never states when not to use it or how it differs from the setup/status tools in the sibling list.

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