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Best Practice Analyzer Rules · data-goblin | DecimalAI

databy data-goblin

Best Practice Analyzer Rules

data-goblin/bpa-rules

Source data-goblin/power-bi-agentic-development ↗License GPL-3.0

Interactive BPA rule generation for Power BI semantic models; guided discovery, model investigation, and expert rule authoring. Automatically invoke when the user mentions "BPA rule", "Best Practice Analyzer", or asks to "create a BPA rule", "audit BPA rules", "recommend BPA rules", "set up BPA for my team", "check model for best practices", "validate BPA rules", "improve a BPA expression".

SkillScore78Maintained

Automatic

Data Analyst pack

Last verified 8/17/2026

What it changes

Passed 17 of 22 test cases with the skill, and 11 of 22 without it.

Without skill48%

With skill78%

Checks it passed that the model alone missed

Specifies ModelRole as the scope string value.
States that files must use Windows CRLF line endings.
States that Tabular Editor 3 includes 27 built-in rules.

and 6 more in the full report

8 fixed10 passed either way4 still failing1 broke

Pass-rate lift: +30 pp
Tokens: +211%
Agent turns: 0%
Response time: -43%

Model Measured 8/17/2026v1 · latest is v218 of 23 cases passed with skill · 22 comparable

Tokens, turns and time describe resource use, not a dollar price.

This benchmark measured an earlier version of the skill.

A newer attempt on gemini-3.8-flash on 10/18/2026 did not produce a publishable comparison (not comparable). The snapshot above is the previously measured run.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/data-goblin-bpa-rules/SKILL.md https://app.decimal.ai/s/data-goblin-bpa-rules/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add data-goblin-bpa-rules, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/data-goblin-bpa-rules/ and pins it in .decimal/skills.lock

decimalai skills add data-goblin-bpa-rules

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/data-goblin-bpa-rules/SKILL.md https://app.decimal.ai/s/data-goblin-bpa-rules/SKILL.md

Raw file: /s/data-goblin-bpa-rules/SKILL.md ↗ · machine-readable summary at /s/data-goblin-bpa-rules.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 8 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 8

Prompt

When defining a custom Tabular Editor BPA rule targeting user security roles in a semantic model, what exact string value should be specified for the Scope property?

What was checked, without and with the skill
Checked	Without skill	With skill
Specifies ModelRole as the scope string value.	Missed	Passed

case-08 · gemini-3.6-flash · 8/17/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md389 lines8 filesincludes scripts

Best Practice Analyzer Rules

Expert guidance for creating and improving BPA (Best Practice Analyzer) rules for Tabular Editor and Power BI semantic models.

When to Use This Skill

Activate automatically when tasks involve:

Creating new BPA rules for semantic model validation
Recommending or choosing BPA rules for a model, team, or organization
Improving or debugging BPA rule expressions
Writing FixExpression to auto-remediate rule violations
Understanding BPA annotations in TMDL files
Analyzing a semantic model against best practices
Converting ad-hoc checks into reusable BPA rules
Auditing or discovering all BPA rules across sources (built-in, URL, model, user, machine)

Primary Workflow: Interactive Q&A Discovery (Double Diamond)

CRITICAL: Do NOT generate BPA rules immediately. This is a requirements-gathering exercise. Use the AskUserQuestion tool to conduct an iterative, back-and-forth conversation with the user across multiple rounds. Continue asking questions until sufficient context about the user's business, team, model, and priorities has been gathered. Only then move to rule generation.

The workflow follows a double-diamond pattern:

Diverge -- broadly explore the user's context, organization, and goals
Converge -- narrow down to specific priorities and constraints
Diverge -- explore the model structure and identify candidate rule areas
Converge -- select and generate the final tailored rule set

Diamond 1: Requirements Gathering (Phases 1-2)

Phase 1: Understand the User and Organization

Call AskUserQuestion with 2-4 questions per round. After each round, review the answers and ask follow-up questions. Do not proceed to Phase 2 until the organizational context is clear. Continue rounds until satisfied.

Round 1 -- Goal and audience:

Ask about the primary goal and who will use the rules. Example AskUserQuestion call:

Question 1: "What is the primary goal for these BPA rules?" -- options: "Set up BPA for my team", "Improve a specific model", "Create governance/compliance rules", (Other)
Question 2: "Who will use these rules?" -- options: "Solo developer", "Small team (2-5)", "Large org / multiple teams", (Other)
Question 3: "What tooling do you use?" -- options: "Tabular Editor 3", "Tabular Editor 2", "TE CLI in CI/CD", "Fabric notebooks"

Track record

Benchmark

17 / 22

test cases passed, vs 11 / 22 without

Adoption

Users: 2
Times used: 25

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v6 — 10/17/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

data-goblin / power-bi-agentic-development

plugins/tabular-editor/skills/bpa-rules/SKILL.md

View on GitHub ↗

License GPL-3.0Imported 10/17/2026Version v2Bundled 7 files · scripts

More skills from the same source and nearby in the registry, with their headline benchmark lift.

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See it in action

What's inside

Best Practice Analyzer Rules

When to Use This Skill

Primary Workflow: Interactive Q&A Discovery (Double Diamond)

Diamond 1: Requirements Gathering (Phases 1-2)

Phase 1: Understand the User and Organization

Track record

Benchmark

Adoption

SkillSafety

Source

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