Create transaction

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

Annotations already indicate this is a non-read-only, non-idempotent write, so the description does not contradict them. However, it adds no behavioral context beyond that: no mention of whether account balance is updated, whether an external sync may be triggered, or whether creating a transaction is reversible. With annotations present, a brief statement of side effects would have justified a higher score.

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 one short sentence with no filler, and it front-loads the action. Its brevity is a strength, though it is so terse that it misses opportunities to convey parameter semantics or side effects. This earns a high conciseness score, not a completeness score.

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?

With 7 parameters (5 required), a balance-update flag, and no parameter descriptions in the description, the definition is under-specified for correct invocation. An agent still needs to know amount sign/format, which getters supply account_id/category_id, and how update_account_balance behaves. The output schema and annotations help with return values and safety, but not with these input-side gaps.

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 only 29%, so the description would need to compensate, but it mentions no parameter meanings. Only the schema documents date format and category_id as a Monarch ID; amount, account_id, merchant_name, notes, and update_account_balance are left without explanatory context. The phrase 'in an account' hints at account_id, but it does not add real semantic value.

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 uses a clear verb ('Create') and resource ('manual transaction') and identifies the scope ('in an account'), which separates it from get/update/delete transaction siblings. It does not list fields or outcomes, but the core purpose is unambiguous. A 4 reflects this clarity without extra differentiating detail.

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?

No guidance is given about when to choose this tool over update_transaction, delete_transaction, or imported transaction flows. The word 'manual' vaguely implies a user-entered transaction, but there are no alternatives, exclusions, or prerequisites. This leaves the agent to infer usage from the sibling list.

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