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

Annotations already declare readOnly=false, idempotent=true, destructive=false, openWorld=true. The description adds non-structured context the annotations don't cover: write-access requirement, a pointer to auth/scopes.ts, and the graceful-failure behavior when the property has changes disabled. Return/confirmation behavior is still unspecified, keeping it at 4.

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?

Two sentences, front-loaded with the core action before the usage rationale and the auth caveat. Density is high and every clause carries information, though the em-dash parentheticals make it slightly harder to scan than a 5 would warrant.

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 2-parameter, no-output-schema tool with annotations already covering the safety profile, the description supplies the missing pieces: when to use it, the write-scope requirement, and failure behavior. The only real gap is parameter-level detail (the undocumented siteUrl) and any success response semantics.

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 description coverage is only 50% — feedpath is documented but siteUrl is not. The description says nothing about either parameter, so it fails to compensate for the undocumented siteUrl and does not clarify how the two relate (e.g., whether siteUrl defaults). It adds no meaning beyond the schema.

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 and resource — 'Tell Google to (re)fetch a sitemap' — and the parenthetical '(re)fetch' clarifies that this both submits and resubmits. This distinguishes it implicitly from read-only siblings like get_sitemap and list_sitemaps, which the agent can separate without opening a schema.

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 clear when-to-use context: it's 'the natural next step after editing pages based on performance data, so the change is picked up rather than waiting for the next crawl.' It also names a when-not condition (refuses when the connection/property has changes switched off). No explicit alternative tool is named, so it stops short of a 5.

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