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

The description is consistent with readOnlyHint=true, and the raw endpoint (GET /main/PractitionerRole/{id}) confirms it is a single-resource read. Beyond that it adds little: nothing about error behavior for unknown ids, permissions, or what the response contains. With annotations already declaring the safety profile, a 3 is appropriate.

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 tight sentences, purpose first, endpoint second, with zero filler. Every element is front-loaded and scannable.

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 one-parameter read this covers the mechanics, but with no output schema the agent has no idea what a practitioner role object contains or how it relates to practitioners/organizations. A brief note on the returned shape would have closed the remaining gap.

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% and the single 'id' parameter is already documented with a format pattern and a note about sourcing it from the matching list tool. The description's 'by id' adds nothing beyond the schema, so the 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?

The description names a specific verb and resource ('Fetch a practitioner role') plus scope ('at a clinic location by id'), which cleanly separates it from the plural sibling halaxy_list_practitioner_roles. It stops short of naming that sibling explicitly, so it falls just below a 5.

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 phrase 'by id' implies this tool is for retrieving a known PractitionerRole rather than searching, but the description never states when to use it versus halaxy_list_practitioner_roles or how to obtain the id (that hint lives only in the schema). Usage is inferable but not spelled out.

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