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

With no annotations, the description carries the full behavioral burden, yet it discloses almost nothing: no statement that the call is a safe read, no indication of whether results are paginated, sorted, or truncated, and no return-shape hint. Only the 'account's' possessive implies scoping.

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?

A single short fragment with zero padding; nothing is wasted. It is arguably too terse rather than too long, but conciseness and structure are not the failure point here.

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 zero-parameter list tool with no annotations and no output schema, the definition is minimally viable: an agent can identify the resource and call it with no arguments. However, it omits anything about the returned collection, ordering, or size, which is the only substantive gap.

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 tool takes zero parameters, so there is nothing for the description to disambiguate. Baseline 4 applies: the empty schema is self-explanatory.

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 fragment identifies the resource domain (recurring monitors belonging to the account) and usefully disambiguates the French term 'veille' from siblings like create_veille, but it never states the action. An agent must infer 'list' from the tool name alone, and scope (all monitors? filtered?) is unstated.

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 when-to-use guidance and no mention of alternatives such as list_jobs, list_pipelines or list_modules, despite a crowded sibling set of read/list tools. The agent is left to guess which listing endpoint is appropriate.

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