create_transaction

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

With no annotations provided, the description carries full burden for behavioral disclosure. It states this is a creation operation but doesn't cover important aspects like required permissions, whether the transaction is immediately posted or pending, error conditions, or what happens on success. The description lacks behavioral context beyond the basic action.

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 well-structured with a clear purpose statement followed by parameter explanations. It's appropriately sized and front-loaded, though the parameter explanations could be slightly more concise (e.g., combining optional parameters). Every sentence adds value.

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 6 parameters with 0% schema coverage and no output schema, the description does a good job explaining parameters but lacks completeness for a mutation tool. It doesn't cover authentication requirements, error handling, or what the tool returns. The parameter explanations help, but behavioral context is insufficient for full understanding.

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 description adds significant value beyond the input schema, which has 0% description coverage. It explains each parameter's purpose: 'account_id: The account ID to add the transaction to', 'amount: Transaction amount (positive for income, negative for expenses)', etc. This clarifies semantics that aren't evident from schema titles alone, especially for 'amount' with its sign convention.

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's purpose: 'Create a new transaction in Monarch Money.' It specifies the verb ('Create') and resource ('transaction'), though it doesn't explicitly differentiate from sibling tools like 'get_transactions' beyond the obvious create vs. get distinction.

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 prerequisites (e.g., authentication status), constraints, or compare it to sibling tools like 'get_transactions' or 'get_cashflow' for context.

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