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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is fully covered by structured data. The description adds the meaningful behavioral detail that all statuses are returned (drafts, published, archived) with no filtering, but says nothing about result volume, ordering, or pagination for what could be a long list.

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 sentence with zero filler, leading with the verb and resource. It is efficient, though the status enumeration after the colon could be read as a scope clarification worth surfacing earlier.

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, read-only list tool with no output schema, the description supplies the essentials: what is listed and that all statuses are included. The only remaining gap is how to distinguish it from describe_payment_pages when an agent is choosing between them.

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 no parameter meaning for the description to add. Baseline 4 applies; the description correctly signals that no filtering inputs exist by stating all statuses are included.

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 gives a specific verb ("Lister") and resource ("les pages et formulaires Pay du projet"), so the agent knows this is an enumeration of payment pages/forms scoped to the current project. It does not explicitly contrast itself with close siblings like get_payment_page or describe_payment_pages, so differentiation is left to inference.

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?

Listing "drafts, published and archived" implies the use case of getting a full overview across all statuses, which is a helpful implied when-to-use signal. However, there is no explicit guidance about when to prefer this over describe_payment_pages or get_payment_page, and no stated prerequisites (e.g., project context required).

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