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

Annotations already declare readOnlyHint and openWorldHint, and the description adds real context beyond them: the permission_level semantics ('siteUnverifiedUser' = created but unverified) and the fact that failures arrive as an error dict with codes (missing_permission/not_found/rate_limited/auth_error/http_error), message and hint. It does not mention pagination or result ordering, but for a read-only listing that is a minor omission.

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?

Purpose is front-loaded in the first clause and every sentence carries information. The error-code enumeration is slightly dense, and the description is written in German while the name/title are English, which adds a small parsing cost for an agent.

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 an output schema present, return values need not be spelled out, yet the description still covers the error envelope, the permission-level caveat and the single optional parameter. Nothing an agent needs to call it correctly is missing, aside from guidance on follow-up 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?

Schema coverage is 0%, so the description must carry the load, and it does: 'workspace' is described as the customer workspace slug and explicitly marked optional when only one workspace exists. Only the concrete slug format/example is missing.

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 resource and scope: all Search Console properties of the Google connection, which distinguishes it from sc_list_sitemaps, sc_add_site and the sc_* reporting tools. The extra note that it works before a site URL is configured in the workspace further pins down what makes this tool distinct.

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?

Gives one useful usage condition ('funktioniert auch, bevor im Workspace eine Site-URL konfiguriert ist') but never names an alternative or an exclusion — e.g. when to prefer sc_add_site or sc_verify_site. Usage is implied rather than directed.

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