get-activity

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

Annotations already declare readOnlyHint=true. The description adds the exact endpoint and the required OAuth scope, enriching the behavioral profile. No mention of error behavior or response shape, but for a simple read operation this is acceptable.

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 compact sentence that front-loads the action, then provides the endpoint and scope. No filler or redundant wording.

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-only fetch, the description is nearly complete. It includes endpoint and scope. The only minor gap is not explicitly stating the return representation, but the phrase 'Fetch a sales activity' adequately implies the response.

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% for the id parameter, so the schema already documents it. The tool description adds no further parameter semantics beyond identifying the resource as a sales activity.

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 identifies the operation: 'Fetch a sales activity' with the specific endpoint and HTTP method. The singular resource and {id} path parameter distinguish it from list-activities or update-activity without ambiguity.

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 implies usage: retrieving a single activity by ID. It states the required scope 'sales:read' but does not explicitly contrast with list-activities or other alternatives, nor provide when-to-use/when-not-to-use guidance.

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