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jamiew

Monarch Money MCP Server

by jamiew

Create Manual Account

create_manual_account

Creates a new manual account in Monarch Money by providing account name, type, and current balance.

Instructions

Create a manual account with account_name, Monarch account_type, and balance.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
balanceYes
account_nameYes
account_typeYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
accountYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.3.2

TDQS

C2.7/5.0
Behavior2/5

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

Annotations indicate a non-read-only, non-destructive, non-idempotent mutation, and the description's 'Create' is consistent with that. However, the description adds little beyond the tool name: 'manual account' is already in the title, and there is no disclosure of side effects, duplicate behavior, or post-creation state. The word 'manual' is a type hint, not meaningful behavioral context.

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

Conciseness4/5

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

The description is a single active-voice sentence with no filler and a clear front-loaded verb. It is appropriately compact, though the brevity reflects under-specification rather than rich, well-edited content.

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?

With three required parameters, no schema descriptions, no enums, and no usage context, the description is not complete enough for an agent to reliably invoke the tool. The output schema covers return values, but the input side lacks acceptable account_type values and balance format. Significant gaps remain.

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 0%, so the description must compensate, but it only repeats the parameter names (account_name, account_type, balance). The qualifier 'Monarch account_type' hints at a controlled vocabulary but does not enumerate valid values, and balance semantics are not explained. This is insufficient for correct parameter construction.

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

Purpose4/5

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

The description clearly states the action ('Create') and resource ('manual account'), and lists the three required inputs. It is distinguishable from sibling tools like create_transaction and get_accounts by resource type, though it doesn't explicitly contrast them. The core purpose is unambiguous.

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

Usage Guidelines2/5

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

There is no guidance on when to use this tool versus alternatives. It does not mention that this is for manual (unlinked) accounts, nor does it contrast with refresh_accounts or get_accounts. No conditions, exclusions, or alternatives are given.

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