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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=true, so the safety profile is covered. The description adds only the underlying endpoint path and the single-entity scope; it says nothing about missing-id behavior or response shape, which would be the genuinely additive context here.

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?

One sentence with the retrieval scope front-loaded and the provenance hint adjacent to it; the endpoint path is mild extra baggage but the whole thing is short and skimmable.

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 single-parameter read with no output schema, the description leaves the agent without any idea of what the equipment record contains or how a failure surfaces. Adequate to invoke, but incomplete for interpreting results.

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 documented there, so the baseline is 3. The description goes beyond it by stating the id's provenance (from safetychain_list_equipment), which tells the agent how to obtain a valid value.

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 verb and resource ('Get one equipment by id'), and explicitly distinguishes it from the list sibling by saying the id comes from safetychain_list_equipment. It doesn't distinguish itself from the many other get_* tools beyond the resource name, but the resource name is 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 parenthetical '(an id from safetychain_list_equipment)' implies the correct workflow — list first, then fetch — but never states when to use this versus alternatives or what happens if the id is unknown. Usage is inferable rather than explicit.

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