powerbi-modeling

powerbi-modeling is a skill for Claude Code, Codex from fabioc-aloha/Alex_Skill_Mall. It costs 107 tokens per session (1,281 once invoked), scanned A, original, MIT.

A guide for building Power BI semantic models—the structured data layer behind Power BI reports. It covers tables, relationships, calculations, documentation, security rules, and model performance.

In plain words
What is it for?
Use it to design star schemas, write DAX measures and calculated columns, configure relationships, add row-level security, document models, and check performance.
Why use it?
It helps avoid confusing relationships, inconsistent calculations, poorly organized models, and slow reports. It also provides guidance for controlling which rows different users can see.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to design star schemas, write DAX measures and calculated columns, configure relationships, add row-level security, document models, and check performance.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/fabioc-aloha/alex_skill_mall/powerbi-modeling
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add fabioc-aloha/Alex_Skill_Mall --skill powerbi-modeling
Clone the repo
git clone --depth 1 https://github.com/fabioc-aloha/Alex_Skill_Mall

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for powerbi-modeling

README.md
[![agentmods](https://agentmods.dev/badge/skills/fabioc-aloha/alex_skill_mall/powerbi-modeling/github.svg)](https://agentmods.dev/skills/fabioc-aloha/alex_skill_mall/powerbi-modeling)
Your own site
<a href="https://agentmods.dev/skills/fabioc-aloha/alex_skill_mall/powerbi-modeling"><img src="https://agentmods.dev/badge/skills/fabioc-aloha/alex_skill_mall/powerbi-modeling/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for powerbi-modeling

Your own site · 80×15
<a href="https://agentmods.dev/skills/fabioc-aloha/alex_skill_mall/powerbi-modeling"><img src="https://agentmods.dev/badge/skills/fabioc-aloha/alex_skill_mall/powerbi-modeling.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 107 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,281 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00107 $0.01281
Opus 5 $0.00053 $0.00641
Sonnet 5 $0.00021 $0.00256
Haiku 4.5 $0.00011 $0.00128

Measured 9d ago against content hash 5c3ee38c154d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

powerbi-modeling scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

plugins/data-analytics/powerbi-modeling/skills/powerbi-modeling/SKILL.md · 155 lines

How it starts

The opening of the file, as written. The whole thing — 155 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Power BI Semantic Modeling

Guide users in building optimized, well-documented Power BI semantic models following Microsoft best practices.

When to Use This Skill

Use this skill when users ask about:

  • Creating or optimizing Power BI semantic models
  • Designing star schemas (dimension/fact tables)
  • Writing DAX measures or calculated columns
  • Configuring table relationships (cardinality, cross-filter)
  • Implementing row-level security (RLS)
  • Naming conventions for tables, columns, measures
  • Adding descriptions and documentation to models
  • Performance tuning and optimization
  • Calculation groups and field parameters
  • Model validation and best practice checks

Trigger phrases: "create a measure", "add relationship", "star schema", "optimize model", "DAX formula", "RLS", "naming convention", "model documentation", "cardinality", "cross-filter"

Prerequisites

Required Tools

  • Power BI Modeling MCP Server: Required for connecting to and modifying semantic models
    • Enables: connection_operations, table_operations, measure_operations, relationship_operations, etc.
    • Must be configured and running to interact with models

Optional Dependencies

  • Microsoft Learn MCP Server: Recommended for researching latest best practices
    • Enables: microsoft_docs_search, microsoft_docs_fetch
    • Use for complex scenarios, new features, and official documentation

Workflow

1. Connect and Analyze First

Before providing any modeling guidance, always examine the current model state:

1. List connections: connection_operations(operation: "ListConnections")
2. If no connection, check for local instances: connection_operations(operation: "ListLocalInstances")
3. Connect to the model (Desktop or Fabric)
4. Get model overview: model_operations(operation: "Get")
5. List tables: table_operations(operation: "List")
6. List relationships: relationship_operations(operation: "List")
7. List measures: measure_operations(operation: "List")

2. Evaluate Model Health

Read the full file on GitHub · 155 lines

Files

What ships with it

5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 9d ago First seen · 155 lines · 107 tokens per session scan A 5c3ee38c154d

Subscribe to this mod's changes

powerbi-modeling is a skill published in the GitHub repository fabioc-aloha/Alex_Skill_Mall (4 stars, last pushed yesterday), licensed MIT. It adds 107 tokens to every session and 1,281 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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