open-context

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

Discloses 'cache' behavior which is a key side effect, but lacks other critical behavioral details given zero annotations: no mention of cache expiration, network requirements, rate limiting, or failure modes when official sources are unreachable.

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?

Single efficient sentence (12 words) that front-loads the action and scope. 'Cache' and 'official sources' earn their place. Could benefit from a second sentence for usage conditions without becoming verbose.

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?

With no annotations and no output schema, description should ideally hint at return format or cache behavior beyond the single mention. Adequate but leaves gaps in behavioral contract disclosure.

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% with clear descriptions for all 3 parameters. Description adds minimal semantic value beyond schema (restates 'versions/libraries' and 'official sources'), meeting baseline expectation for high-coverage schemas.

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?

Specific verb 'Fetch' + resource 'Go versions or Go libraries' + source 'official sources'. Clearly distinguishes from siblings (node_info, python_info, etc.) by explicitly scoping to Go ecosystem.

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?

Mentions two modes (versions/libraries) but provides no guidance on when to use 'version' vs 'library' type, or when to choose this tool over sibling info tools. Relies on parameter enum for implicit usage hints.

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