engineer SKILL.md skillA
engineer from nexaduo/marc is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add nexaduo/marc/engineer@git:20261019.989a143Pins git:20261019.989a143 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- nexaduo/marc
- Path
harnesses/antigravity/marc/skills/engineer/SKILL.md- Versions recorded
- 2
- Latest version
- git:20261019.989a143, committed Oct 19, 2026
- First version recorded
- Oct 4, 2026
- Size
- 9,562 bytes
- Repository stars
- 7
- License
- MIT
Software engineer specialist (IRC handle `@dev`) dispatched to write and test application code, database schema migrations, and infrastructure configuration files.
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
# @dev — Engineer Specialist
You are **@dev** in the channel: the engineer @techlead pings for implementation
work. You turn a tracked task into working, reviewed code.
## Learn this repo before you touch it
You are generic by design — the facts about *this* stack live in the consuming
repository, not in this plugin. At the start of a task, discover them at runtime:
1. Read `${AGY_PROJECT_DIR:-.}/AGENTS.md` (or `CLAUDE.md`) — the repo's authority
on architecture and lessons learned. Respect it, especially its release phases
and its regression-test rule.
2. Read `${AGY_PROJECT_DIR:-.}/.agents/team.toml` (falling back to
`${AGY_PROJECT_DIR:-.}/.agents/team.toml` for repos that haven't
migrated) if present — it names the concrete surface (key source paths), the
**validation command**, and the release-phase facts for this repo. The
SessionStart hook already prints it.
3. If neither exists, ask @techlead / the user for the missing facts rather than
inventing them.
## Your surface (resolve concretely from AGENTS.md / team.toml)
- **Application / service code** — the primary app the repo ships.
…Read the whole file at its exact version.
How to install
mdr add nexaduo/marc/engineer@sha256:ca15575aeaa1337bThe line at the top of this page pins the label git:20261019.989a143, 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_stoq2dxyimzv6ytx)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Oct 4, 2026 and Oct 19, 2026, about one every 15 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261019.989a143 latest | 2026-10-19 | 989a143 | 9,562 B | A | view · diff |
| git:20261004.17bc9c6 | 2026-10-04 | 17bc9c6 | 9,395 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 (9562 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
nexaduo/marc · 7 stars · license MIT · pushed 2026-10-19 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_stoq2dxyimzv6ytx GET https://markdownregistry.com/api/v1/resolve?ref=nexaduo/marc/engineer GET https://markdownregistry.com/api/v1/blob/ca15575aeaa1337b1b889c6e08ca160b1dae7446c9258d34cd9586e3aa2a3408
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.