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

Annotations already flag a non-read-only, destructive write, but the description adds genuinely non-obvious behavior: the inquiry is emailed to The2410, no automatic confirmation goes to the customer, and it reuses saved analysis and plan state. It stops short of explaining what 'destructive' means here (e.g., whether the context is consumed or comments overwritten), so it is not fully complete.

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?

Purpose and precondition are front-loaded and the sentences are short. There is mild redundancy ('emails the inquiry to The2410' is stated twice, and the required/optional field listing duplicates the schema), but nothing is padded or off-topic.

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 no output schema, three parameters, and a nested object, the description covers the key operational facts an agent needs: precondition, side effect, absence of customer confirmation, and idempotency guidance. Failure behavior and what a successful response returns are not addressed, which is a minor gap given the tool's simplicity.

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 the nested contact object is fully documented, so the schema carries the parameter burden. The description mostly restates required/optional fields ('Name and email are required; company and phone are optional') and the provenance of project_context_id already noted in the schema, adding little new meaning.

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 names a specific verb and resource ('Submit the customer's project inquiry') and adds the delivery channel ('to The2410 by email'). Its workflow positioning ('after the customer has reviewed the inquiry') lets an agent separate it from the adjacent prepare-project-inquiry-tool and the analyze/plan tools without opening a schema.

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 states a precise precondition for use ('after the customer has reviewed the inquiry and explicitly asked to submit it') and an explicit when-not-to-use rule ('Do not repeat this call after a successful submission'). The usage boundary is unambiguous, even though it does not name the sibling tool by name.

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