m-folding SKILL.md skillA

m-folding from csalcedodatabi/powerquery-m-for-agents is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add csalcedodatabi/powerquery-m-for-agents/m-folding@git:20261001.aec5b2c

Pins git:20261001.aec5b2c in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
csalcedodatabi/powerquery-m-for-agents
Path
planned/m-folding/SKILL.md
Versions recorded
1
Latest version
git:20261001.aec5b2c, committed Oct 1, 2026
Size
1,771 bytes
Repository stars
4
License
MIT

Use when a Power Query M step may or may not fold to the data source — deciding whether a transformation is pushed down as native SQL or evaluated locally, finding which step breaks folding, reading the step folding indicators or View Native Query, using Value.NativeQuery with EnableFolding, or designing a query so it stays foldable for incremental refresh. Triggers on "query folding", "does this fold", "breaks folding", "native query", "Value.NativeQuery", "EnableFolding…

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

# M Folding

> **Status.** Stub. Scope and structure are fixed in
> [the design spec](../../docs/superpowers/specs/2026-09-28-powerquery-m-for-agents-design.md)
> (§4); content lands in phase 4, each claim backed by a lab query.

## Planned contents

| File | Covers |
|---|---|
| `references/how-folding-works.md` | What the engine pushes down, and when evaluation turns local |
| `references/breakers.md` | Steps that commonly stop folding, per connector family (SQL, OData, SharePoint, files) |
| `references/verify.md` | Step indicators, View Native Query, Query Diagnostics: what each proves and what it does not |
| `references/native-query.md` | `Value.NativeQuery` + `[EnableFolding = true]`, and parameters |
| `references/incremental-refresh.md` | `RangeStart`/`RangeEnd` filters that fold, and the ones that silently do not |

## Rule until then

Do not claim a step folds without a way to check it. Say which verification the user should
run (View Native Query on that step) instead of asserting.

## Related skills

- **`m-reference`** — signatures and host availability.
- **`m-iteration`** — `Table.Buffer`, which stops folding on purpose.

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add csalcedodatabi/powerquery-m-for-agents/m-folding@sha256:52780e13b11f2766

The line at the top of this page pins the label git:20261001.aec5b2c, 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_uuux3do6gwlpbcmq.svg)](https://markdownregistry.com/a/art_uuux3do6gwlpbcmq)

1 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 1 version of this file, committed on Oct 1, 2026.

versioncommittedcommitsizeaudit
git:20261001.aec5b2c latest2026-10-01 aec5b2c 1,771 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (1771 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

GitHub

csalcedodatabi/powerquery-m-for-agents · 4 stars · license MIT · pushed 2026-11-06 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_uuux3do6gwlpbcmq
GET https://markdownregistry.com/api/v1/resolve?ref=csalcedodatabi/powerquery-m-for-agents/m-folding
GET https://markdownregistry.com/api/v1/blob/52780e13b11f27660b3e75839ce47388a34ca21ba52b35452ad5202dc30299c3

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.

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