m-reference SKILL.md skillA
m-reference from csalcedodatabi/powerquery-m-for-agents is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add csalcedodatabi/powerquery-m-for-agents/m-reference@git:20261026.a154a2ePins git:20261026.a154a2e 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
plugins/powerquery-m-for-agents/skills/m-reference/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261026.a154a2e, committed Oct 26, 2026
- Size
- 5,734 bytes
- Repository stars
- 4
- License
- MIT
Use when you need to know whether a Power Query M library function exists, its exact signature and parameter types, what it returns, which hosts have it (Power BI Desktop, Excel, Dataflows Gen2), or which of several similar functions to reach for — and for the M language itself when no single function is in question, such as let/in, each and the underscore, records, lists and tables, types and metadata, try/otherwise/catch, lazy evaluation and streaming. Triggers on "what does X do in M…
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 Reference Every Power Query M library function, agent-native. The catalogue is **exported from the engine itself** (`#shared`), not scraped from documentation: a function in the catalogue exists in the host it names. > **Status.** `generated/` is built from one export: Power BI Desktop (the host and build are > in the header of `catalog.md`). No other host yet, so no card carries ⌂. Which functions > have executed examples is the ▶ flag in `catalog.md`. ## How to use this **A question about the language itself** - `let`/`in`, `each` and `_`, records, lists and tables, types, `try`/`otherwise`/`catch`, laziness - no function answers. Read **`concepts.md`** and open the one page it points to. **A question about a function. One hop. Do not read the whole library.** 1. **Search** **`generated/catalog.md`** for the name or its prefix (`Table.Join`, `Text.`); do not read it whole. Every library function has one row: name, category, return type, flags, the file its card is in (`Card`), one-line summary. Looking for a connector (`Snowflake.Databases`, `Stripe.Contents`)? Search **`generated/connectors.md`** instead. A constant or type value …
Read the whole file at its exact version.
How to install
mdr add csalcedodatabi/powerquery-m-for-agents/m-reference@sha256:68705875f0663c8cThe line at the top of this page pins the label git:20261026.a154a2e, 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_bf47xndbd63wkyjt)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Oct 26, 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 (5734 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
csalcedodatabi/powerquery-m-for-agents · 4 stars · license MIT · pushed 2026-11-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_bf47xndbd63wkyjt GET https://markdownregistry.com/api/v1/resolve?ref=csalcedodatabi/powerquery-m-for-agents/m-reference GET https://markdownregistry.com/api/v1/blob/68705875f0663c8cc171a3a56e1af49147225d0570cfb0c7a96f2f36d0c5782e
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.