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

The description discloses the side effect (create), the uniqueness constraint (only one per site), and the precondition (site must exist). These go beyond the annotations, which only indicate non-read-only, non-idempotent, and non-destructive behavior, but do not detail failure modes.

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 two sentences long, front-loads the core action, and packs the key constraints without redundancy. It is concise and directly relevant to invocation.

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 description gives enough high-level context for creation and constraints, but there is no output schema or return-value description. It also leaves error behavior (e.g., duplicate attempts or nonexistent site) unspecified, so an agent may need to infer outcomes from sibling tool patterns.

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?

All parameters are documented with schema descriptions, but the descriptions are minimal: site_id and remote_configuration are clear, while configuration is only described by an external link. Since configuration is a nested object with no internal schema, the description doesn't fully specify how to populate it.

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 action ('Create') and the resource ('Cookie Solution for a site'), and adds two important constraints: 'Only one per site' and 'the site must exist first.' This distinguishes it from sibling tools like get_cookie_solution, update_cookie_solution, and delete_cookie_solution.

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?

It gives a concrete prerequisite ('site must exist first'), which helps with sequencing after create_site. The uniqueness constraint implicitly suggests using update_cookie_solution if one already exists, though it does not name that alternative explicitly.

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