data-quality-monitoring skillA
data-quality-monitoring is agent-read markdown (skill) from fabioc-aloha/alex_skill_mall: Data pipeline quality assurance — anomaly detection, schema drift, null ratio monitoring, freshness checks, and safe-write protection for reliable data engineering.
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
What the file says
# Data Quality Monitoring
> Trust your data, or fix it before anyone else sees it.
## Quality Dimensions
| Dimension | Definition | Measurement |
|-----------|------------|-------------|
| **Completeness** | All expected data present | Row count, null ratio |
| **Consistency** | Data follows expected patterns | Schema match, value ranges |
| **Timeliness** | Data arrives on schedule | Freshness, latency |
| **Accuracy** | Data reflects reality | Comparison to source |
| **Uniqueness** | No unexpected duplicates | Distinct key ratio |
## Anomaly Detection
### Row Count Monitoring (Z-Score)
```python
def check_row_count(source: str, current_count: int,
expected: float, stddev: float,
threshold_pct: float = 0.25) -> dict:
"""Detect row count anomalies using rolling baseline."""
z_score = abs(current_count - expected) / max(stddev, 1)
deviation_pct = abs(current_count - expected) / max(expected, 1)
return {
"source": source,
"current": current_count,
"expected": round(expected),
"deviation_pct": round(deviation_pct, 4),
"z_score": round(z_score, 2),
…Read the whole file at its exact version.
How to install
mdr add fabioc-aloha/alex_skill_mall/data-quality-monitoring@git:20260728.80a7ab6mdr add fabioc-aloha/alex_skill_mall/data-quality-monitoring@sha256:34dbee358254432aPin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_z6l76kp5dnvrayzs)
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Versions
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 (6857 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
fabioc-aloha/alex_skill_mall · 4 stars · license MIT · pushed 2026-09-21 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_z6l76kp5dnvrayzs GET https://markdownregistry.com/api/v1/resolve?ref=fabioc-aloha/alex_skill_mall/data-quality-monitoring GET https://markdownregistry.com/api/v1/blob/34dbee358254432ab13432b1eeb15ccfc50ee596c2aa1fc21db2c18fdf84241e
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