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

Goes well beyond the annotations: discloses that the tool is currently inactive due to a missing siteverification scope and returns error=missing_scope, describes success output (success, owners, next_step) and the error=verification_failed case when Google can't find the proof. Nothing here contradicts readOnlyHint=false / destructiveHint=false / openWorldHint=true.

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?

Front-loaded with the most decision-relevant fact (tool inactive), then flows to procedure, defaults and return behavior. Dense but every sentence carries operational value; the mixed German with English identifiers is slightly harder to scan but not 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?

An output schema exists, yet the description still adds the failure/error semantics an agent needs to branch on, and supplies the method enumeration that the schema leaves as a bare string. For an inactive, scope-blocked mutation tool, the agent has everything required to decide and to explain the fallback.

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%, and the description compensates for two of three parameters: it enumerates the allowed method values (DNS_TXT, META, ANALYTICS, TAG_MANAGER) with defaults, and explains workspace as an optional customer slug. The required 'identifier' parameter's expected format (domain vs. URL) is only implied via the method-default sentence rather than stated directly.

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+resource ('Site-Verifizierung durchführen') and names the Search Console verification methods, making it clearly distinct from siblings like sc_add_site, sc_verification_token and sc_list_sites. The upfront availability warning removes any ambiguity about whether the tool works at all.

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?

Explicitly gives the precondition for use ('nachdem der Nachweis platziert ist' via DNS record, meta tag or file, or when GA/GTM already runs on the site), the method-selection rule (ANALYTICS/TAG_MANAGER for those cases), and an alternative path while the tool is inactive: verify manually in Search Console and check status via sc_list_sites.

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