begin_transaction

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It doesn't explain what happens after starting a transaction (e.g., whether it locks resources, how long it lasts, or that it must be explicitly committed or rolled back). This is a significant gap for a state-changing operation.

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 a single, concise sentence that is front-loaded with the action. It earns its place with no wasted words, though it could benefit from a brief mention of the transaction lifecycle.

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 complexity (starting a transaction) and the lack of annotations and output schema, the description is incomplete. It doesn't explain the transaction's scope, how it relates to other transaction tools, or what the agent should expect after calling it. The sibling tools suggest a workflow, but the description doesn't connect to it.

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 schema description coverage is 100% for the single parameter (connectionId), so the schema already documents it. The description adds no additional meaning beyond what the schema provides, which is acceptable given the high coverage, but it doesn't clarify how the connectionId is used in the transaction context.

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 'Start a new database transaction' clearly states the action (start) and the resource (database transaction), which is specific enough to distinguish from siblings like commit_transaction and rollback_transaction. However, it doesn't explicitly mention the connection context, which is a key part of the tool's function.

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 no guidance on when to use this tool versus alternatives. It doesn't mention that this is the first step in a transaction workflow, nor does it reference related tools like commit_transaction or rollback_transaction. The agent is left to infer usage from the name and sibling list.

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