render_spec

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

Annotations reveal idempotentHint=true, readOnlyHint=false, destructiveHint=false. The description adds little behavioral context beyond the hint of rendering; it doesn't explain potential side effects, output format specifics, or interaction with data_bindings. Since annotations partially cover the behavioral profile, the low added value is acceptable. 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?

The description is a single, concise sentence that front-loads the action and scope. Every word serves a purpose, conveying both what it does and when to use it. It is efficient and to the point.

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 tool's complexity (6 parameters, no schema descriptions) and lack of annotation coverage for key behavioral aspects, the description is insufficient. The output schema exists, so return values are likely covered, but the lack of parameter guidance and usage details makes it incomplete. An agent would struggle to know how to correctly configure the tool for a given task.

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 description coverage is 0%, meaning the schema provides no descriptions for parameters. The description does not elaborate on any parameters, leaving the agent to infer the meaning of 'spec', 'output', 'backend', 'strict', 'offline', and 'data_bindings'. The only hint is 'backend-native' which might relate to 'backend', but this is insufficient. With zero coverage, the description must compensate, and it doesn't.

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 tool's action (render) and the target (an artifact), and specifies when it should be used ('when explicitly requested'). While it doesn't name sibling tools like compile_spec or observe_spec, the phrase 'interactive or backend-native artifact' helps distinguish it from potentially similar tools. It is specific enough to convey the core purpose.

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 provides clear context: it should be used only when explicitly requested, which helps an agent decide when not to use it. However, it doesn't explicitly mention alternatives or conditions for choosing this over siblings like compile_spec or observe_spec. The guidance is adequate for basic selection but lacks exclusions or comparisons.

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