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

readOnlyHint=true already declares this is a safe read, so the bar is lower. The description does add one useful behavioral fact beyond annotations: the response bundles the contractor's collaborations. It says nothing about not-found handling, auth, or whether the collaborations set is paginated or truncated.

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?

Two short fragments, front-loaded with the payload scope before the endpoint. The URL fragment is arguably redundant for an agent but is compact and grounds the resource path.

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, the description carries the burden of describing the return value and does so only minimally ("with their collaborations"). For a simple one-param read that is close to adequate, but the shape of the collaborations field and error behavior remain unspecified.

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 description coverage is 100% and the single id parameter is documented in-schema with its UUID pattern and provenance ("from jethr_list_contractors"). The description adds no parameter meaning beyond the schema, so baseline 3 applies.

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?

States a specific resource and single-item scope ("One contractor with their collaborations") plus the underlying endpoint, which distinguishes it from the sibling jethr_list_contractors. It never uses an explicit verb like "get" or "retrieve", but the singular framing plus the required uuid makes the operation unambiguous.

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 contains no guidance on when to use this versus jethr_list_contractors or jethr_get_employee, and no stated prerequisites (e.g. that the uuid must come from a list call). Usage is only inferable from the resource name.

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