Skip to main content
Glama
Maronato

YNAB MCP Server

by Maronato

Create Transactions

create_transactions

Create one or more YNAB transactions in a single call. Each successful creation is undoable.

Instructions

Create one or more transactions in a single call. Each successful creation is undoable.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
budget_idNoBudget ID. Omit to use the last-used budget.
transactionsYes
Behavior4/5

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

Beyond annotations, the description adds 'Each successful creation is undoable,' providing important behavioral context for agent decisions. However, it does not detail idempotency, error handling, or atomicity of batch operations.

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?

Two sentences, front-loaded with purpose and key behavioral info. Every word is necessary; no fluff or redundancy.

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

Completeness2/5

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

Despite complexity (batch creation, nested subtransactions), the description omits constraints like max/min items, subtransaction sum rule, and optionality of budget_id. Agents lack context for safe invocation, especially without an output schema.

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

Parameters2/5

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

Schema description coverage is 50%, but the description adds no parameter-specific information. It does not compensate for missing schema descriptions, leaving agents without further guidance on parameters like budget_id or transaction fields.

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?

Description clearly states 'Create one or more transactions' specifying the verb (create) and resource (transactions). It also mentions batching and undo capability, distinguishing it from sibling tools like update_transactions or delete_transactions.

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 implies usage for adding transactions but does not explicitly state when to use this tool versus alternatives like create_scheduled_transactions. No guidance on prerequisites or when not to use it.

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

Install Server

Other Tools

Latest Blog Posts

MCP directory API

We provide all the information about MCP servers via our MCP API.

curl -X GET 'https://glama.ai/api/mcp/v1/servers/Maronato/ynab-mcp'

If you have feedback or need assistance with the MCP directory API, please join our Discord server