db_update_connection_pool

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It indicates a mutation via 'Update' and states that updated connection pool information is returned, but it does not disclose whether updates are partial, whether null values clear fields, whether the pool must exist first, or what permissions or side effects are involved.

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 compact and well-structured, with the core action stated first followed by a clean parameter list and a Returns line. No unnecessary prose or repetition exists, and every line adds useful 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 six-parameter mutation tool with no annotations, the description is missing behavioral context such as how optional/nullable parameters affect the update and whether this operation is safe or destructive. The parameter list and return statement cover the basics, but an agent lacks enough guidance to confidently understand partial-update semantics.

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 0% description coverage, so the description must compensate for all six parameters, and it does. Each parameter is given a meaningful explanation beyond its raw name, including 'New target logical database name' and the valid mode values (session, transaction, statement). Slightly more context about ambiguous terms like 'database ID or label' would push it to a 5.

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 ('Update') and a specific resource ('connection pool configuration'), making the tool's purpose unambiguous. It also differentiates itself from the generic db_update tool and the related db_create_connection_pool, db_get_connection_pool, and db_delete_connection_pool siblings by naming the exact resource type.

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?

There is no explicit guidance on when to use this tool versus alternatives, no prerequisites, and no note that it applies only to existing pools. The purpose is implied by the name and action verb, but the description does not help an agent decide between this and sibling connection-pool tools.

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