plaid-mcp

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 effectively describes key traits: idempotency, incremental syncing using cursors, asynchronous behavior for first syncs, blocking behavior with 'wait_for_ready', and the 'status' field indicating sync completion. It lacks details on rate limits or error handling, but covers essential operational aspects well.

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 front-loaded with the core purpose in the first sentence, followed by critical behavioral details. Every sentence adds value: idempotency, cursor usage, first-sync behavior, parameter effects, and output field. There is no redundant or vague language, making it efficiently structured.

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 complexity of syncing transactions with external APIs, no annotations, and no output schema, the description does well by covering purpose, key behaviors, and parameter effects. However, it lacks details on error cases, rate limits, or the exact structure of returned data (beyond the 'status' field), leaving some gaps for a fully informed agent.

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 description coverage is 0%, so the description must compensate. It explains the semantics of 'wait_for_ready' (controls blocking behavior during first sync) and implies 'wait_timeout_seconds' relates to timeout, though not explicitly. This adds meaningful context beyond the bare schema, but falls short of fully documenting both parameters, such as the exact role of the timeout.

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 specific action ('Pull the latest transactions from Plaid into the local cache'), identifies the resource (transactions from Plaid), and distinguishes it from siblings like 'get_transactions_tool' (which likely retrieves cached data) and 'refresh_transactions_tool' (which might force a full refresh). The mention of 'idempotent and incremental' further clarifies its operational scope.

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 clear context on when to use this tool: for syncing transactions from Plaid, particularly noting its behavior during 'first sync after linking an institution' and the effect of the 'wait_for_ready' parameter. However, it does not explicitly state when not to use it or name alternatives like 'refresh_transactions_tool' for comparison, which prevents a perfect score.

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