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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false. Description adds the 'no-account' characteristic and linkage to creation, but no additional behavioral details such as polling behavior or response format (output schema covers that). No contradiction.

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 sentences, minimal waste, front-loaded with the core purpose and usage pattern.

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 output schema exists and annotations describe safety/idempotency, the description is sufficient for selection and invocation. It would benefit from an explicit mention of how this differs from the general fvs_get_render_status, but the 'no-account' qualifier provides enough context.

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 has 0% description coverage, but the description compensates by explaining that status_url alone or quote_id+claim_token pair can be used. This gives functional meaning to the parameters beyond their names and nullability.

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?

Clearly states the tool checks the status of a no-account paid render, referencing the creation tool fvs_create_paid_render_quote. This distinguishes it from the sibling fvs_get_render_status by scope (no-account paid).

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?

Specifies the intended use case ('no-account paid render') and the two alternative input modes, but doesn't explicitly contrast with fvs_get_render_status or state when not to use it. Context is clear but not fully complete.

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