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montumodi

MongoDB Atlas MCP Server

by montumodi

atlas_user_create

Create a MongoDB Atlas database user with specified roles and authentication credentials to control access to your clusters.

Instructions

Create an Atlas user

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
bodyYes
optionsNoOptional parameters
Behavior1/5

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

No annotations provided, and the description fails to disclose behavioral traits such as side effects, required permissions, error handling, or idempotency. The agent has no insight into what happens during creation.

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

Conciseness3/5

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

The description is very short (one sentence), which is concise but at the cost of completeness. It is front-loaded with the core action, but every sentence should earn its place; this sentence is too sparse to be useful.

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

Completeness1/5

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

Given the complexity (required object parameter, no output schema, nested objects), the description is wholly inadequate. It does not explain the structure of the body, the possible options, or the return value, leaving the agent with insufficient information.

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% (only 'options' has a description). The 'body' parameter, which is required, has no description, and the description does not add any meaning beyond the schema. The agent cannot determine what fields are needed in the body.

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

Purpose3/5

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

Description states 'Create an Atlas user', which is a specific verb and resource. However, it does not differentiate from the sibling tool 'user_create', which could cause confusion. The term 'Atlas user' is ambiguous without further context.

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?

No guidance on when to use this tool vs alternatives like 'atlas_user_update' or 'user_create'. The description lacks any context about prerequisites or conditions for usage.

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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