r-mirai SKILL.md skillA
r-mirai from posit-dev/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add posit-dev/skills/r-mirai@v1.2Pins v1.2 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- posit-dev/skills
- Path
r-lib/r-mirai/SKILL.md- Versions recorded
- 1
- Latest version
- v1.2, committed Oct 6, 2026
- Size
- 12,137 bytes
- Repository stars
- 556
- License
- MIT
Help users write correct R code for async, parallel, and distributed computing using mirai. Use when users need to run R code asynchronously or in parallel, write mirai code with correct dependency passing, set up parallel workers, convert from future or parallel, use mirai_map, integrate with Shiny or promises, or configure cluster/HPC computing.
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
mirai is a minimalist R framework for async, parallel, and distributed evaluation, built on nanonext. ## Core Principle: Explicit Dependency Passing mirai evaluates expressions in a **clean environment** on a daemon process. Nothing from the calling environment is available unless passed explicitly — this is the #1 source of mistakes. ```r # WRONG: my_data and my_func are not available on the daemon m <- mirai(my_func(my_data)) ``` There are two ways to pass objects, and the names used **must match** the names referenced in the expression. ### `.args` (recommended) Objects in `.args` populate the expression's **local evaluation environment** — available directly by name inside the expression. ```r m <- mirai(my_func(my_data), .args = list(my_func = my_func, my_data = my_data)) ``` ### `...` (dot-dot-dot) Objects passed via `...` are assigned to the **daemon's global environment**. Use this when objects need to be found by R's standard scoping rules (e.g., helper functions called by other functions). ```r m <- mirai(my_func(my_data), my_func = my_func, my_data = my_data) ``` ### Shortcut: pass the whole calling environment ```r # .args form — populates local eval env …
Read the whole file at its exact version.
How to install
mdr add posit-dev/skills/r-mirai@sha256:26e19db91bdb16ebThe line at the top of this page pins the label v1.2, 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_rqzul6bvuqmyofrg)
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Versions
The registry has recorded 1 version of this file, committed on Oct 6, 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 (12137 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
posit-dev/skills · 556 stars · license MIT · pushed 2026-11-02 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_rqzul6bvuqmyofrg GET https://markdownregistry.com/api/v1/resolve?ref=posit-dev/skills/r-mirai GET https://markdownregistry.com/api/v1/blob/26e19db91bdb16ebcdfbad9b7c9d561e9edd60cc4348c576d773445cf2602f3d
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.