create_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 reveals nothing about side effects, permissions, idempotency, response format, or error states. For a mutation tool, this is a significant gap, essentially providing no transparency beyond the action itself.

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 sentence and front-loaded, but it is essentially a restatement of the tool name. It is concise but under-specified, lacking any additional context. While it doesn't waste words, it borders on tautology and misses opportunities to add useful context.

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 has 8 parameters, no output schema, and no annotations, the description is inadequate. It fails to explain return values, side effects, or usage context. The schema covers parameters, but the behavioral and contextual gaps make this incomplete for an agent to use effectively.

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%, so every parameter is documented in the schema. The description adds no additional meaning beyond the schema, which already explains fields like amount (negative for expenses), date format, and required fields. Therefore, the baseline 3 is appropriate.

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 'Create a new transaction' uses a specific verb and resource, clearly indicating the action of creating a transaction. It is distinct from siblings like update_transaction or categorize_transaction, though it lacks explicit scope details to fully distinguish it from bulk-creation tools like import_csv.

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, no prerequisites, no context about required inputs or typical scenarios. It merely states 'Create a new transaction' with no mention of alternative tools or exclusions.

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