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 and external reach are covered. The description adds only the HTTP endpoint, which is mildly useful context but says nothing about not-found handling, response contents, or whether related resources are expanded. With annotations carrying the main burden, this is adequate but thin.

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 sentences, zero padding, with the core purpose front-loaded before the endpoint detail. Nothing in the text is redundant.

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?

This is a simple single-parameter read tool with no output schema and full annotation coverage, so the definition is workable as-is. However, with no output schema the description could reasonably say what a vendor record contains or whether the call fails for unknown ids, which it does not.

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% – vendor_id is typed as a positive integer with a description ('FieldPulse vendor id.') and a minimum constraint. The description adds nothing beyond the schema (no format hints, no sourcing guidance such as where to get a vendor id), 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 states a specific retrieval operation ('One vendor by id') plus the underlying endpoint GET /vendors/{id}, so an agent immediately knows it fetches a single vendor record by identifier. The singular 'one vendor' implicitly contrasts with the sibling list tool fieldpulse_list_vendors, though it never names it explicitly.

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?

Usage is only implied: 'by id' signals that this is the tool for fetching a known vendor, as opposed to enumerating vendors. There is no explicit statement of when to prefer this over fieldpulse_list_vendors, nor any prerequisites or error conditions (e.g., what happens with an unknown id).

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