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chaandannn

nable (finops-mcp)

get_databricks_dbu_breakdown

Break down Databricks DBU usage by cluster, job, and cluster type to find top consumers and identify all-purpose clusters that can be converted to job clusters for cost reduction.

Instructions

Show DBU (Databricks Unit) consumption by cluster, job, and cluster type.

Identifies the top DBU consumers in the workspace, helping you understand which clusters and jobs are driving spend. Surfaces all-purpose clusters that should be converted to job clusters for cheaper execution.

Args: start_date: ISO date (YYYY-MM-DD). Defaults to 30 days ago. end_date: ISO date (YYYY-MM-DD). Defaults to today.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
end_dateNo
start_dateNo
Behavior2/5

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

No annotations provided. Description implies read-only behavior but does not explicitly state safety or confirm no side effects. Agent must infer it's a query tool.

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 concise paragraphs plus parameter list. Purpose is front-loaded, no fluff. Every sentence adds value.

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?

Covers purpose, parameters, and actionable insight. Lacks detail on return format (aggregated vs time-series) but sufficient for a simple date-filtered report tool.

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

Parameters4/5

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

Schema has 0% coverage; description adds default values and ISO format hints for both start_date and end_date, significantly aiding correct parameter usage.

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?

Clearly states the tool shows DBU consumption by cluster, job, and cluster type, identifying top consumers and providing actionable insights. Distinct from siblings like get_databricks_cluster_efficiency.

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?

Provides context on identifying top consumers and suggesting cluster conversions, but no explicit when-to-use vs alternatives like get_databricks_job_costs or get_databricks_costs.

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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