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

The annotations already declare destructiveHint=true, idempotentHint=true, and openWorldHint=true. The description adds important behavioral detail beyond those annotations: replacement is whole-row, so omitted columns are not preserved. It does not discuss permissions, rate limits, or response behavior, but the critical destructive semantics are disclosed.

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?

The description is a single compact sentence with zero waste. The WRITE marker and replacement rule are front-loaded, and the endpoint is included as supporting detail.

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 destructive write tool with no output schema, the description gives the essential replacement semantics and endpoint. It is complete enough to call correctly, though it does not describe the expected response or error behavior.

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 all four parameters are already documented. The description adds meaningful semantics beyond the schema by clarifying that the entire row is replaced and every column must be supplied, which reinforces the correct interpretation of the values array and key_column.

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?

The description states a specific verb and resource: replace a data source row's key and values. It explicitly flags this as a WRITE operation and names the API endpoint, which distinguishes it from read-oriented siblings such as goformz_get_datasource_row and goformz_list_datasource_rows.

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?

It clearly explains the operational context: the whole row is replaced and every column must be sent. This gives strong guidance for when this tool is appropriate versus a partial update. However, it does not explicitly name sibling alternatives such as goformz_create_datasource_row or state when not to use this tool.

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