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montumodi

MongoDB Atlas MCP Server

by montumodi

custom_db_role_get_all

Retrieve all custom database roles defined in your MongoDB Atlas project. Use this to list and manage role configurations.

Instructions

Get all custom database roles

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
optionsNoOptional parameters
Behavior2/5

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

No annotations provided. The description does not disclose any behavioral traits such as pagination, sorting, authentication requirements, or response structure. It is too minimal for a read operation with no output schema.

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?

Single sentence, zero waste. Every word is necessary. Highly concise and front-loaded.

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?

Given no output schema and a single parameter, the description should at least clarify what the returned data contains (e.g., list of role objects). It also lacks details on filtering or pagination via 'options'. Incomplete for practical use.

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% (one optional object parameter). The description adds no value beyond the schema's 'Optional parameters' description. Baseline 3 applies as schema does the work, but schema description is also minimal.

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 uses a clear verb ('Get') and specific resource ('all custom database roles'). It distinguishes from sibling 'custom_db_role_get' by implying a list, but could be more explicit about returning multiple items.

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 versus siblings like 'custom_db_role_get'. No context about prerequisites, filters, or common use cases.

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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