Retrieve A Line Item By Id

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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint, so the description's statement of retrieving details is consistent but adds little new behavioral context. It mentions the return type (JSON object) and the endpoint, which provides minor additional value.

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 concise and front-loaded with the purpose. It includes the API endpoint and required parameters, but has a minor grammatical issue ('a specific Estimating records'). Overall, it is well-structured and earns its length.

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 retrieval tool with 6 parameters and no output schema, the description adequately states the return type and required parameters. It does not cover pagination nor details of optional parameters, but the schema handles that. Context is sufficiently complete for the task.

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?

All parameters have descriptions in the input schema (100% coverage), and the description merely lists required parameters without adding new semantics. Baseline 3 is appropriate as the schema does the heavy lifting.

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 that the tool retrieves a line item by its ID, specifying it fetches full details of Estimating records. The name includes 'project', distinguishing it from the company-level sibling tool.

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 says 'Use this to fetch the full details...' which implies when to use it, but it does not explicitly mention when not to use or provide alternatives. The sibling tool 'retrieve_a_line_item_by_id_company' indicates scope differentiation indirectly.

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