get_index_overview

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

No annotations provided, so description carries the burden. It discloses that the tool is a composition of multiple aggregations (v1.46/v1.50/v1.55), giving insight into the data assembly. However, it doesn't explicitly state that it's read-only or mention authentication or rate limits. Still, it reveals the computational nature and scope.

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 extremely concise with no unnecessary words. It front-loads the key information (version, purpose, output fields) and then provides a usage hint. Every sentence earns its place.

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 tool has 2 parameters, no output schema, and no annotations. The description explains the return values and parameter behavior but lacks details on output format (e.g., JSON structure) and error conditions. It adequately covers the snapshot purpose but could be more 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 covers 100% of parameters with descriptions. The description adds value beyond the schema by explaining that top_n=0 omits both lists and points to alternative tools for full distributions. This enriches understanding of parameter behavior.

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?

Description clearly states the tool's function: 'single-call repo snapshot' with specific metrics (doc_count, section_count, etc.). It distinguishes from sibling tools like get_all_tags/get_all_roles by noting that full distributions are available separately. The phrase 'what is this repo at a glance?' provides a concise purpose statement.

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 explicitly says 'Use for 'what is this repo at a glance?'' and mentions that for full distributions, use get_all_tags / get_all_roles. It also explains that top_n=0 omits lists, guiding appropriate usage. This provides clear when-to-use and alternative context.

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