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

Annotations already declare write, open-world, non-idempotent and non-destructive, and the description adds meaningful context beyond them: the reply-by-email channel and the 'Rate limited' trait, which annotations do not express. It stops short of explaining failure behavior or what a rate-limit hit looks like, so not a 5.

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?

Three tight sentences: purpose first, then the consent gating, then the rate-limit caveat. No redundancy and every clause carries actionable information.

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 write tool with open-world side effects and no output schema, the description covers purpose, consent precondition, delivery channel, and rate limiting — enough to call it correctly. Slight gap: no guidance on what success/failure looks like since there is no output schema.

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% and each parameter (name, email, phone, company, consent, message, language) is documented in the schema itself. The description only reiterates the name/email sharing condition, adding no field-level meaning beyond the schema, so baseline 3 applies.

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 a specific verb and resource ('Send an inquiry to Novaeon') plus the delivery mechanism ('same as the contact form; they reply by email'). This unambiguously separates it from the read-only siblings (get_full_content, get_page, get_studio_overview), which are all content-fetching tools.

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 gating is given: 'Only call this when the person asked to contact Novaeon and agreed to share their name and email.' The precondition (explicit request + consent) is exactly the when-to-call signal an agent needs, and no sibling overlaps so no alternative routing is required.

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