Juno Functions Build

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

Annotations are all false, so no contradiction. The description adds auto-detection behavior but does not disclose potential side effects (e.g., overwriting old builds) or other traits like rate limits. Basic but not rich.

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 concise sentences with no wasted words. The main action is front-loaded, and the language support list is clear. Perfect conciseness.

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 no output schema and 4 parameters, the description is somewhat complete but lacks information about build outputs, prerequisites (e.g., project must be initialized), or error scenarios. Adequate but not comprehensive.

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%, and the description adds the key detail that language auto-detection occurs if unspecified. This provides meaningful context beyond the schema descriptions, though it doesn't elaborate on each parameter's syntax.

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 it builds serverless functions and lists supported languages. It distinguishes from siblings like publish and eject, but does not explicitly differentiate them, so slightly below perfect.

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 implies usage before publishing but does not provide explicit guidance on when to use or alternatives. No exclusions or context for language selection is given, making it adequate but not helpful.

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