play_data_safety_fill

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

With no annotations, the description carries the burden and does valuable work: it discloses that this is a non-destructive generation step ("imports nothing"), that it emits a summary for human review, and that errors carry real production risk. Gaps remain around destination_path overwrite behavior and any auth/permission requirements.

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-loads purpose, then the import/risk warning, then the parameter example — a sensible priority order with no filler. The prose is slightly loose (paragraph breaks mid-sentence) but every sentence carries information.

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 so return-value detail is not needed, and the description still signals what it returns (a declaration summary). For a tool of this complexity the main omission is the undocumented scalar parameters, but the risk warning and the collected_data example cover the parts most likely to be misused.

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 compensate. It does so well for collected_data — explaining the Response-ID key mapping and the {group, shared, optional, purposes} value shape with concrete PSL_* examples. However template_path, destination_path, supports_deletion, account_deletion_url and encrypted_in_transit remain undocumented in both schema and description, so the compensation is only partial.

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 ("Fill in the Data safety CSV and return a summary") and explicitly distinguishes itself from the sibling play_data_safety_import by declaring "Imports nothing — it generates the file for review." An agent can tell exactly what this tool produces without opening the 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 a clear workflow cue: review the summary with the user before calling play_data_safety_import, and warns that an incorrect declaration can take down a published app. It does not discuss play_data_safety_export (read vs generate), so the routing story is strong but not exhaustive.

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