session_notify

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

No annotations are provided, so the description carries the full behavioral disclosure burden. It reveals that the tool sends a notification, but does not state where the notification goes, whether it persists, whether the level affects delivery, or whether any side effects or permissions are involved. For a side-effecting operation, this is a significant transparency gap.

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 short sentence and is front-loaded, but it is also low on substance. The phrase 'through MCP' adds little value, and the sentence largely restates what the tool name already implies. It is concise, but conciseness is not accompanied by useful context.

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?

The tool has a simple flat schema, so an agent can construct a call, but the description does not explain the tool's effect, destination, delivery semantics, or return behavior. Since there are no annotations and no output schema, the description needed to compensate more than it does.

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%, so the input schema already documents both message and level, including the enum values and default. The description adds no parameter-level meaning beyond the schema, so the baseline of 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 states the verb 'Send' and the object 'notification', so an agent can infer the core action. However, 'through MCP' is vague and does not clarify to whom or where the notification goes, and it does not differentiate this from the nearby session_info and session_request tools. The phrasing borders on restating the tool name.

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?

There is no guidance on when to use this tool versus alternatives, and no mention of prerequisites or context. The sibling list contains session_info and session_request, but the description gives no reason to prefer one over another. An agent must rely entirely on the tool name and schema.

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