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

With no annotations, the description carries the burden. It discloses that project_key defaults to global tenant_id and specifies the return structure (JSON with language names, codes, default status). This adds useful context beyond the schema, though it doesn't explicitly state read-only nature.

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?

Tightly structured with Args: and Returns: sections, no redundant text. Every sentence adds value (purpose, parameter, return).

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?

For a simple getter with one optional parameter, the description covers purpose, parameter, and return value. Output schema exists, so return details are bonus. It lacks explicit differentiation from siblings, but that is minor for a tool of this simplicity.

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 descriptions are absent (coverage 0%), so the description must compensate. It clearly defines project_key as 'Project key (tenant ID)' and explains the default behavior, making the parameter's meaning and usage fully clear.

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?

Clear, specific verb ('Get') and resource ('available languages for translation in a project'). Distinguishes from sibling tools like get_translation_modules and publish_translation by focusing on languages rather than modules or publishing.

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?

No explicit guidance on when to use this tool versus alternatives. It only mentions the optional project_key and fallback to global tenant_id, which is a parameter behavior rather than usage context. No comparison to sibling tools.

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