patterns-data-processing SKILL.md skillA
patterns-data-processing from mendixlabs/mxcli is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add mendixlabs/mxcli/patterns-data-processing@git:20261013.8bf1a18Pins git:20261013.8bf1a18 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- mendixlabs/mxcli
- Path
.claude/skills/mendix/patterns-data-processing/SKILL.md- Versions recorded
- 6
- Latest version
- git:20261013.8bf1a18, committed Oct 13, 2026
- First version recorded
- Aug 21, 2026
- Size
- 12,382 bytes
- Repository stars
- 137
- License
- Apache-2.0
Patterns for loops, aggregates, batch processing and list transformation — including which retrieve source is legal where, and why nested loops are the wrong tool. Use when a microflow processes a list, merges data, or does anything in bulk.
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-index: generated by scripts/skill-index.py; make check-skill-index -->
## Find it fast
`sed -n '<from>,<to>p' SKILL.md` one section rather than reading the file;
`./mxcli syntax <topic>` answers *how do I write this* for a fraction of either.
| lines | section |
|---|---|
| 27-106 | Loop Patterns |
| 107-199 | Retrieve by Association |
| 200-278 | Aggregate Patterns |
| 279-369 | List Operations |
| 370-413 | Batch Processing |
| 414-470 | Data Transformation |
| 471-504 | Error Handling in Loops |
| 505-512 | Best Practices |
<!-- /skill-index -->
# Data Processing Patterns
Patterns for loops, aggregates, batch processing, and data transformation.
## Loop Patterns
### Basic Loop
```mdl
mdl 1;
/**
* Process all items in a list
*/
create microflow Module.ProcessItems (
$Items: list of Module.Item
)
returns boolean
begin
declare $ProcessedCount integer = 0;
loop $item in $Items
begin
-- Process each item
change $item (ProcessedDate = [%CurrentDateTime%]);
commit $item;
set $ProcessedCount = $ProcessedCount + 1;
end loop;
log info node 'Processing' 'Processed ' + $ProcessedCount + ' items';
return true;
end;
```
…Read the whole file at its exact version.
How to install
mdr add mendixlabs/mxcli/patterns-data-processing@sha256:88faf98697f1d47eThe line at the top of this page pins the label git:20261013.8bf1a18, 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_mi5mems5yhbhqwny)
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Versions
The registry has recorded 6 versions of this file, between Aug 21, 2026 and Oct 13, 2026, about one every 11 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261013.8bf1a18 latest | 2026-10-13 | 8bf1a18 | 12,382 B | A | view · diff |
| git:20261010.50fe33a | 2026-10-10 | 50fe33a | 12,102 B | A | view · diff |
| git:20261005.d50c29e | 2026-10-05 | d50c29e | 11,534 B | A | view · diff |
| git:20261001.3a9ec83 | 2026-10-01 | 3a9ec83 | 10,765 B | A | view · diff |
| git:20260916.fb6e35b | 2026-09-16 | fb6e35b | 10,515 B | A | view · diff |
| git:20260821.ff81a24 | 2026-08-21 | ff81a24 | 9,222 B | A | view |
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 (12382 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
mendixlabs/mxcli · 137 stars · license Apache-2.0 · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_mi5mems5yhbhqwny GET https://markdownregistry.com/api/v1/resolve?ref=mendixlabs/mxcli/patterns-data-processing GET https://markdownregistry.com/api/v1/blob/88faf98697f1d47e3ea3e626b5e043e9e12518271b3f495570ab81cba870c37c
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.