google_update_data_safety

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

With no annotations, the description carries the full burden. It usefully discloses that this is a submission of pre-existing reviewed data (not a field-by-field edit) and that no read endpoint exists, so results cannot be verified by reading back. It does not say whether the call replaces an existing declaration, what permissions/API scope are needed, or what happens if the CSV is stale or malformed.

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 short sentences, zero waste, with the core action and the key constraint (CSV export) front-loaded and the read-endpoint caveat following.

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 two-parameter mutation with no annotations and no output schema, the description covers what to submit and that there is no read counterpart, but omits replacement semantics, failure modes for stale/invalid CSVs, and permission requirements — meaningful gaps for an unannotated write tool.

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 100%, so packageName and csvPath are already documented; baseline is 3. The description reinforces that csvPath must be a Google Play Data Safety export in reviewed form, which adds a small amount of meaning beyond the schema's 'Local path to the reviewed Data Safety .csv file'.

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 plus resource: submit a Data Safety declaration, scoped to a Google Play CSV export. No sibling in the tool list touches Data Safety, so it is effectively distinguishable, but the description never explicitly separates itself from other google_update_* mutation tools.

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?

Implied prerequisites are present: the CSV must be 'up-to-date' and 'user-reviewed', and the note that Google offers no read endpoint tells the agent not to look for a corresponding getter. However there is no explicit when-to-use/when-not guidance, no mention of edit-based workflows (create/validate/commit edit) that govern other Play mutations, and no statement of what to do if a declaration already exists.

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