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

Annotations declare readOnlyHint=true, and the description adds context that this is the 'AI-generated summary' from the 'Aircall AI Voice feature,' which is useful. However, it does not discuss potential error cases, auth requirements, or the format/availability of summaries beyond what annotations already convey.

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?

The description is one compact sentence that conveys the core purpose and the REST endpoint. It is front-loaded with the action and resource, and every word contributes value without redundancy.

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 simple read-only tool with a single parameter and no output schema, the description is largely complete. It identifies the tool's unique function and provides the REST path. However, it could optionally mention what the summary contains or any known limitations, but that is not essential given the simplicity.

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?

The sole parameter 'id' is fully documented in the schema (100% coverage with description 'The call id.'). The description does not add extra meaning beyond the schema, simply echoing the endpoint placeholder {id}. Baseline 3 is appropriate.

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 states the tool's function: 'Get the AI-generated summary of a call.' It names the specific resource and distinguishes it from sibling tools like transcription, sentiments, and action items by focusing on the AI summary. The REST endpoint reference adds precision.

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 by identifying the tool's purpose, but it does not explicitly state when to use this tool versus the many similar sibling tools (e.g., aircall_get_call_transcription). No alternative tools or exclusion criteria are mentioned.

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