Create DB user + grant

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

No annotations are provided, so the description must convey behavioral traits. It states the user is created 'if absent', implying idempotency, and grants 'all privileges' — a significant action. However, it doesn't mention security implications, required permissions (e.g., root access), or potential conflicts; transparency is moderate.

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: the first states the action, the second provides a use case. It is front-loaded and concise, with no redundant information. Minor improvement could be integrating the use case into the first sentence, but overall efficient.

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?

Given no output schema and 4 well-documented parameters, the description covers the core action and a common use case. However, it omits details on return values, error conditions (e.g., user already exists), and prerequisites (e.g., database must exist). It is sufficient but not rich.

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 100% description coverage, so baseline is 3. The description adds only the conditional 'if absent', which slightly clarifies the creation logic, but does not elaborate on parameter constraints or formats beyond the 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 clearly specifies the verb 'Create' and the resource 'MySQL user', and adds 'grant all privileges on one database'. It distinguishes from siblings like mysql_query or mysql_dump by focusing on user creation. The phrase 'if absent' adds precision.

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?

The description provides a specific use case: 'when a migrated site has a DB but no registered user'. It does not explicitly exclude other scenarios or mention alternatives, but the context of siblings suggests no other tool performs this exact function, so guidance is adequate.

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