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

readOnlyHint=true already tells the agent this is a safe non-mutating read, so the description's 'Fetch' adds little on the safety axis. It does disclose the underlying endpoint (GET /{account}/tasks/{task_id}.xml), which is mildly useful for tracing, but says nothing about error behavior for a missing id or the returned payload.

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 that are front-loaded with the action and resource, and nothing is padded. The trailing API-path sentence is arguably redundant with the title 'Get a task', which keeps it just shy of a 5.

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 tool with no output schema and a readOnly annotation, the definition covers what the agent needs to invoke it. The main omission is any hint about the response shape or what happens when the id does not resolve.

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?

There is a single parameter (task_id) and schema coverage is 100%, with the schema itself describing it as 'Task id.' and constraining it to a positive integer. The description adds no format, source, or acquisition hint beyond the schema, so the baseline of 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 verb (Fetch) and resource (one task), and goes further by defining the domain term — an appointment/to-do attached to a job — which disambiguates it from unrelated uses of 'task'. It is clearly distinguishable from kickserv_create_task, though it never names a sibling 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?

'By id' implies the narrow lookup use case, which is adequate context for a single-record getter. However, there is no guidance on when to prefer this over listing tools (e.g. kickserv_list_jobs / kickserv_list_customer_jobs) or what to do with an id you do not have.

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