chaprola_index

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

With no annotations, the description carries full responsibility for disclosing side effects. It states the tool builds an index file, implying a write operation, but does not mention whether it creates a new file, overwrites an existing one, requires special permissions, or affects the original data file. This leaves significant behavioral uncertainty.

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 a single, concise sentence that is front-loaded with the action and resource. It contains no unnecessary words and is easy to parse.

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 output schema and no annotations, the description does not explain what the agent will receive after calling the tool (e.g., success message, index file path), nor any prerequisites like whether the file must exist or how the project is used. It is minimal and leaves the agent guessing about the full workflow.

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?

The schema provides descriptions for all three parameters (file, field, project) with 100% coverage, so the baseline is 3. The description adds no additional meaning beyond what the schema already contains, such as format details or relationships between parameters.

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's function: 'Build an index file (.IDX) for fast lookups on a field.' It uses a specific verb ('Build') and resource ('index file'), and explains the purpose. This distinguishes it from sibling tools like 'sort' or 'search' by focusing on index creation.

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 guidance is provided on when to use this tool versus alternatives, nor any exclusions or prerequisites. The phrase 'for fast lookups' implies a use case, but it does not explicitly tell the agent when to choose this tool over similar data operations like 'query' or 'search'.

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