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

Annotations already declare destructive=true, idempotent=false, openWorld=true; the description adds real value beyond them by flagging the pre-condition (needs a content id) and the specific failure mode ERR_ALREADY_SENT, which corroborates the non-idempotent hint. It still omits what happens on success (queued vs immediate), auth/permission needs for the Google Indexing API, and any quota/rate limits – notable for an external write.

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 a '[write]' marker and the core action, then constraints and the error case, with no filler. The stacked parentheticals make it slightly harder to parse than a flat sentence structure would.

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-param, no-output-schema tool hitting an external API, the description covers the action, the identifier contract, the ineligible-entry case, and one concrete error code – enough for an agent to decide and call correctly. Remaining gaps (auth, success return) are modest given the annotation set.

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 carries the burden: it explains that the entry is identified by either gservice_indexer_id or gservice_indexer_uuid, which adds meaning absent from the bare schema. However, it doesn't state whether at least one is required (required list is empty), which wins if both are supplied, or what the identifier formats look like.

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: submitting an indexer entry's content to the Google Indexing API, naming the entity types (article, collection, page, lead, advertisement) and equating it to the panel's 'send to Google indexing' button. An agent can distinguish it from create_gservice_indexer / list_gservice_indexer / delete_gservice_indexer and from submit_gservice_sitemap without opening another 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 explicit negative conditions: entries added by hand (no content id) cannot be sent, and leads/advertisements return ERR_ALREADY_SENT once their URL was sent. It does not point at a sibling as the alternative path (e.g. when to use submit_gservice_sitemap instead), so routing is only partly covered.

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