laddro.coverLetters.render

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

The annotation readOnlyHint=true is correctly interpreted as read-only, and the description adds valuable behavioral context: 'Costs 1 API credit.' This goes beyond what annotations provide and alerts the agent to a potential cost. No contradiction found.

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 sentence that conveys the core action, output, and a notable detail (cost). No filler words; every part is informative and front-loaded.

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, the description correctly focuses on transformation rather than return values. It could mention that the cover letter must exist prior to rendering, but 'saved cover letter' implies this. Still, a brief prerequisite note would improve completeness.

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?

The input schema has 100% parameter description coverage, so the baseline is 3. The description adds no additional semantic meaning beyond stating 'template and styling settings', which is already captured in the schema. It does not clarify parameter interactions or constraints.

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 uses the specific verb 'Render' and clearly identifies the resource as 'a saved cover letter' with 'template and styling settings' to produce 'PDF'. It effectively distinguishes this tool from siblings like laddro.coverLetters.create or laddro.coverLetters.list by focusing on output format.

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?

The description implies the tool is used when you want to produce a PDF from an existing cover letter, but it does not explicitly state when not to use it or mention alternatives (e.g., if you need just JSON, use get). It assumes the cover letter is already saved, which is clear but could be more explicit.

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