create_job_mv_endpoint

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

With no annotations provided, the description must disclose behavioral traits. It only says 'Create or update' without explaining the upsert semantics, required permissions, side effects, or any constraints. The agent has no insight into the tool's behavior beyond the action.

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 concise sentence with no redundancy. However, it lacks important details, reducing its practical value. For what it attempts, it is efficient, but could be expanded to improve completeness.

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?

Given the presence of an output schema (unavailable) and a complex nested parameter (mv_config), the description is insufficient. It does not explain return values or the configuration structure, leaving the agent with significant ambiguity for a non-trivial operation.

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 elaborate on parameters. 'job_id' is self-explanatory, but 'mv_config' is an arbitrary JSON object with no further explanation. The description adds no meaning to this critical parameter, leaving the agent uncertain about required fields or structure.

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 clearly states the action ('Create or update') and the target resource ('materialized view endpoint for a job'). Although it does not explicitly differentiate from siblings, no other sibling tool targets the same resource, so the purpose is unambiguous.

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?

No guidance is provided on when to use this tool versus alternatives, such as when to update versus create, or prerequisites like existing job or permissions. The description is purely declarative.

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