Borrowing it
Nothing to install: this file belongs to kpbray/power-bi-agent-skills. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/kpbray/power-bi-agent-skills/master/.github/skills/best-practices/SKILL.mdgit clone --depth 1 https://github.com/kpbray/power-bi-agent-skillsWrote 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.
[](https://agentmods.dev/skills/kpbray/power-bi-agent-skills/best-practices)<a href="https://agentmods.dev/skills/kpbray/power-bi-agent-skills/best-practices"><img src="https://agentmods.dev/badge/skills/kpbray/power-bi-agent-skills/best-practices/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.
<a href="https://agentmods.dev/skills/kpbray/power-bi-agent-skills/best-practices"><img src="https://agentmods.dev/badge/skills/kpbray/power-bi-agent-skills/best-practices.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00031 | $0.03027 |
| Opus 5 | $0.00015 | $0.01514 |
| Sonnet 5 | $0.00006 | $0.00605 |
| Haiku 4.5 | $0.00003 | $0.00303 |
Grade A, and why
best-practices 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 11d 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.
How it starts
The opening of the file, as written. The whole thing — 525 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Best Practices Skill
This skill helps apply Power BI best practices, Best Practice Analyzer (BPA) rules, and enterprise standards to semantic models and reports.
When to Use This Skill
- Validating model quality against BPA rules
- Applying naming conventions
- Optimizing model performance
- Adding documentation and descriptions
- Enforcing enterprise governance patterns
- Reviewing DAX measures for quality
Best Practice Analyzer (BPA) Overview
BPA rules are organized into categories:
- Performance - Optimization and efficiency rules
- DAX Expressions - Measure and calculation quality
- Formatting - Naming and organization standards
- Maintenance - Housekeeping and cleanup rules
- Error Prevention - Validation and safety rules
Quick Validation Checklist
Model Structure
- All tables have descriptions
- Relationships are one-to-many (no bi-directional unless required)
- Key columns are marked as hidden
- Date table is marked as date table
- No unused columns or tables
DAX Measures
- All measures have descriptions (/// comments)
- DIVIDE() used instead of
/operator - Variables used for repeated expressions
- Measures organized in display folders
- No implicit measures (summarizations)
Naming Conventions
- Tables: PascalCase, singular nouns
- Columns: PascalCase with spaces allowed
- Measures: Business-friendly names
- No special characters or reserved words
Performance
- No calculated columns where measures work
- Integer keys instead of string keys
- Narrow tables preferred (fewer columns)
- Appropriate data types used
Performance Rules
HIGH IMPACT
Avoid bi-directional relationships
Bi-directional relationships cause performance overhead and can create ambiguity.
Instead of:
relationship {{guid}}
fromColumn: TableA.'Key'
toColumn: TableB.'Key'
crossFilteringBehavior: bothDirections
Do this:
relationship {{guid}}
fromColumn: TableA.'Key'
toColumn: TableB.'Key'
// Use DAX CROSSFILTER() in measures when needed
measure 'Filtered Value' =
CALCULATE(
[Base Measure],
CROSSFILTER(TableA[Key], TableB[Key], Both)
)
What ships with it
2 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.
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.
- 11d ago First seen · 525 lines · 31 tokens per session scan A 92de51d33a37
best-practices is a skill published in the GitHub repository kpbray/power-bi-agent-skills (9 stars, last pushed 7mo ago), licensed MIT. It adds 31 tokens to every session and 3,027 once invoked, about $0.0002 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 2026-08-31.
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