setup_db

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

No annotations are provided, so the description carries the full burden. It discloses that it fetches from GitHub and stores in a local DB, but it omits side effects like network usage, potential overwrites, auth requirements, or the default behavior of skipping already-indexed repos unless force is set. This is insufficient for a setup tool with significant external effects.

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 short and front-loaded with the main verb and resource. However, the phrase 'Initialize the local SQLite FTS5 index and index repositories' is slightly redundant by using 'index' twice, and the second sentence could be merged. Still, it is efficient overall.

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 setup tool with side effects and no output schema, the description lacks important context: it doesn't mention required authentication (likely via login), the duration or impact of re-indexing, or the default skip-if-already-indexed behavior. Given the sibling tools, this could cause an agent to misuse the tool or miss prerequisites.

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%, as both 'force' and 'repos' have descriptions in the schema. The description adds no parameter-level detail beyond what the schema already provides, so baseline 3 is appropriate.

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 uses a specific verb ('Initialize') and names the resource ('local SQLite FTS5 index') and the action ('index repositories'), making the core purpose clear. It distinguishes itself from sibling query/search tools conceptually, though it does not explicitly name alternatives or contrast with them.

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 gives no guidance on when to use this tool versus alternatives like login, refresh_auth, or query. It does not state prerequisites (e.g., must log in first) or when to use force/repos parameters. Usage context is entirely implied by the word 'Initialize.'

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