Juno Functions Upgrade

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

Annotations indicate a write operation (readOnlyHint=false) and non-idempotent. The description adds that a snapshot can be optionally created, implying reversibility. However, it does not disclose other behavioral traits like potential downtime, error states, or what happens to old functions.

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 three sentences, each serving a distinct purpose: stating the action, listing methods, and noting an optional feature. It is front-loaded with the purpose and wastes no words.

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?

The description covers the core action and key options, but given the tool has 13 parameters and no output schema, it lacks detail on what happens post-upgrade, error handling, or interaction with other tools. Some behavioral context is missing.

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 100%, so all 13 parameters have individual descriptions. The tool description adds summarized context (three WASM sourcing methods) but does not address the majority of parameters (e.g., mode, retry, progress). The description adds marginal value beyond the schema.

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 upgrades satellite serverless functions, lists three specific methods (local WASM, CDN releases, default build output), and mentions optional snapshot creation. It distinguishes from sibling tools like build or publish by focusing on the upgrade action.

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 usage through the listed methods but does not explicitly state when to use this tool versus alternatives like juno_functions_build or juno_functions_publish. No prerequisites or exclusion criteria are provided.

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