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

Annotations already carry the read-only, idempotent, non-destructive safety profile. The description adds real behavioral context: this is a conversational intake contract rather than an API mutation, should happen first in planning, and downstream quoting/booking have missing-data pitfalls. It does not spell out the call's return behavior, but the output schema covers that.

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 content is front-loaded with the purpose and field list, followed by actionable call timing and warnings. It is slightly heavy with bilingual duplication and a long parenthetical list, but every element adds information; it could be tightened without losing value.

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 start-of-flow tool with informative annotations and an output schema, the description covers what to do, when to do it, and what not to do with siblings. No critical decision information is missing.

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 input schema has zero parameters, so the description is the only source of semantic meaning. It enumerates the complete conversational field list, including nuanced items like children's ages, budget per person, and luggage transfer, and flags the fields required downstream. This fully compensates for the empty schema.

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 identifies a specific action-resource pair: starting the tailor-made Camino intake form and collecting its fields conversationally before quoting. It enumerates the exact fields, immediately distinguishing it from quote and booking tools, which are named as later steps.

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?

Explicit timing is given ('Call it at the start of any planning request' and 'BEFORE quoting anything'), and it names two sibling tools with the conditions that must be true before they are allowed (presupuesto for quote_camino_package, contact data for create_camino_booking_proposal). This gives an agent clear routing rules.

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