MySQL Begin Transaction

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

Annotations indicate readOnlyHint=false and destructiveHint=false. The description adds that it returns a transaction ID but does not disclose side effects such as whether it fails if a transaction is already active or how it interacts with the connection state. Basic disclosure but lacks depth.

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?

Two concise sentences that are well-structured and front-loaded with the core action. No unnecessary words.

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 the tool's simplicity and the presence of an output schema (returning transaction ID), the description is mostly complete. However, it could mention edge cases like starting a transaction while one is already open or the need for subsequent commit/rollback. Overall, adequate but slightly lean.

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 coverage is 100% with descriptions for all three parameters (level, isolationLevel, isolation_level) clarifying they relate to isolation level. The description adds 'optional isolation level' but does not specify valid values or default behavior, so minimal additional value over 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 states the tool begins a new transaction with an optional isolation level and returns a transaction ID. It distinguishes from sibling transaction operations like commit, rollback, and savepoint.

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 implies usage for starting transactions but does not explicitly say when to use this tool versus alternatives like mysql_transaction_savepoint or mysql_transaction_execute. No guidance on prerequisites or when not to use.

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