cpp-modules SKILL.md skillA

cpp-modules from outlinedriven/outline-driven-development is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add outlinedriven/outline-driven-development/cpp-modules@git:20260905.fd53e99

Pins git:20260905.fd53e99 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
outlinedriven/outline-driven-development
Path
.devin/skills/cpp-modules/SKILL.md
Versions recorded
1
Latest version
git:20260905.fd53e99, committed Sep 5, 2026
Size
5,803 bytes
Repository stars
55
License
Apache-2.0

Use when a C++ project adopts C++20 modules: named modules, partitions, header units, the global module fragment, CMake CXX_MODULES, or a BMI lookup error. Not for flag basics: use clang.

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

# C++20 modules

## Contract

| Field | Bound contract |
|---|---|
| Trigger | The user writes or builds `export module` code, asks how named modules differ from header units, needs the CMake wiring for module interface units, or gets a module-not-found, redefinition, or stale-BMI error. |
| Authority | Read-only. The skill emits module source shapes, compiler invocations, and CMake snippets to chat; the user applies them. Rollback is not needed. No remote mutation. |
| Side effect | Chat output. Any scratch build to confirm a flag runs on scratch files. |
| Done | The module layout, the per-compiler build commands, and the CMake wiring are reported for the user's compiler and CMake version, and every error in the request maps to a cause and fix. |

## Inputs

- Compiler and version: required. Clang 23.1.0 and GCC 16.2 are current stable; both accept the commands below.
- CMake version when CMake is in use: required. Current stable is 4.4.3; the stable `CXX_MODULES` file set needs 3.28 or later.
- Generator: required with CMake. Ninja 1.11 or later, Ninja Multi-Config, or Visual Studio; Makefile generators do not support modules.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add outlinedriven/outline-driven-development/cpp-modules@sha256:825c1139b492a903

The line at the top of this page pins the label git:20260905.fd53e99, 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_y7xcmjqh5d4ihbcj.svg)](https://markdownregistry.com/a/art_y7xcmjqh5d4ihbcj)

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

Versions

The registry has recorded 1 version of this file, committed on Sep 5, 2026.

versioncommittedcommitsizeaudit
git:20260905.fd53e99 latest2026-09-05 fd53e99 5,803 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 (5803 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

outlinedriven/outline-driven-development · 55 stars · license Apache-2.0 · pushed 2026-09-28 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_y7xcmjqh5d4ihbcj
GET https://markdownregistry.com/api/v1/resolve?ref=outlinedriven/outline-driven-development/cpp-modules
GET https://markdownregistry.com/api/v1/blob/825c1139b492a903051c7cc312ac7a75e26012dc14cb4fbf4cfcb57a8f5d9cd9

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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