powerbi-data-transformation SKILL.md skillA
powerbi-data-transformation from santoshkanthety/powerbi-agent is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add santoshkanthety/powerbi-agent/powerbi-data-transformation@git:20260808.22d6d33Pins git:20260808.22d6d33 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- santoshkanthety/powerbi-agent
- Path
skills/powerbi-data-transformation/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260808.22d6d33, committed Aug 8, 2026
- Size
- 7,079 bytes
- Repository stars
- 3
- License
- MIT
ETL/ELT transformation patterns. Use when the user mentions: union, append, stack tables, combine datasets, convert data types, cast, type mismatch, key generation, surrogate key, hash key, join key, light join, merge, schema alignment, homogenise, data harmonisation, Power Query union, Spark union, M append, combine queries.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Skill: Data Transformation — Union, Append, Type Conversion & Light Joins
## Trigger
Activate when the user mentions: union, append, stack tables, combine datasets, convert data types, cast, type mismatch, key generation, surrogate key, hash key, join key, light join, merge, schema alignment, homogenise, data harmonisation, Power Query union, Spark union, M append, combine queries
## What You Know
You have harmonised data from dozens of source systems — different date formats, inconsistent key strategies, null handling, schema drift. You know every trick for making mismatched data play nicely, and you know when a "light join" is the right move vs a full dimensional join.
## Unioning / Appending Data
### Spark — Union Multiple Sources (with schema alignment)
```python
from pyspark.sql.functions import col, lit, current_timestamp
from functools import reduce
def union_with_schema_alignment(dfs: list) -> "DataFrame":
"""Union DataFrames with different schemas — fills missing columns with null."""
# Find superset of all columns
all_cols = list({col for df in dfs for col in df.columns})
aligned = []
for df in dfs:
…Read the whole file at its exact version.
How to install
mdr add santoshkanthety/powerbi-agent/powerbi-data-transformation@sha256:a6e515203ee65743The line at the top of this page pins the label git:20260808.22d6d33, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_cvf5kexd7ntesvdd)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Aug 8, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (7079 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
santoshkanthety/powerbi-agent · 3 stars · license MIT · pushed 2026-10-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_cvf5kexd7ntesvdd GET https://markdownregistry.com/api/v1/resolve?ref=santoshkanthety/powerbi-agent/powerbi-data-transformation GET https://markdownregistry.com/api/v1/blob/a6e515203ee6574318af343436393db0a3ecd4658a7205b14fe8743d450de22f
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.