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rgarcia

YNAB MCP Server

by rgarcia

importTransactions

Import pending transactions from all linked accounts for your YNAB plan. Initiates the import process and returns imported transaction IDs.

Instructions

Imports available transactions on all linked accounts for the given plan. Linked accounts allow transactions to be imported directly from a specified financial institution and this endpoint initiates that import. Sending a request to this endpoint is the equivalent of clicking "Import" on each account in the web application or tapping the "New Transactions" banner in the mobile applications. The response for this endpoint contains the transaction ids that have been imported.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
plan_idYesThe id of the plan. "last-used" can be used to specify the last used plan and "default" can be used if default plan selection is enabled (see: https://api.ynab.com/#oauth-default-plan).
Behavior3/5

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

No annotations are provided, so the description carries the full burden. It discloses the initiation of import and response contents, and gives a behavioral analogy. However, it does not mention idempotency, side effects, rate limits, or potential destructive actions.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is three concise sentences, each adding value: purpose, behavioral analogy, and response content. No wasted words.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a single-parameter tool with no output schema, the description covers purpose, behavioral analogy, and response contents. It could mention if the import is asynchronous or any prerequisites (e.g., linked accounts).

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% and the schema description already explains the plan_id parameter with usage details. The description adds no additional parameter semantics beyond the schema, so baseline of 3 is appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the verb 'imports', the resource 'available transactions on all linked accounts', and the scope 'for the given plan'. It distinguishes from sibling tools like getTransactions and createTransaction by specifying an import action.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides a useful analogy ('equivalent to clicking Import') implying when to use it, but lacks explicit guidance on when not to use it or alternatives. No prerequisites or exclusions are mentioned.

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

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