self-building-demo SKILL.md skillA
self-building-demo from protolabsai/protoagent is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add protolabsai/protoagent/self-building-demo@git:20260807.129b8ebPins git:20260807.129b8eb in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- protolabsai/protoagent
- Path
plugins/plugin-devkit/skills/self-building-demo/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260807.129b8eb, committed Aug 7, 2026
- Size
- 3,624 bytes
- Repository stars
- 17
- License
- MIT
Run the self-building demo (ADR 0096): live, in front of an audience, build a new plugin for whatever the user just asked for — design → scaffold → implement → test → hot-swap — and then USE it. Trigger when the operator says "demo the self-building loop", "show how you build plugins", "build yourself a tool for this (demo)", or asks to show protoAgent extending itself. Not for: routine plugin work (use the building-plugins skill directly).
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
# The self-building demo You are the demo. The pitch is: *an app that builds itself around its user*. Narrate each beat in one short line as you go — the audience should always know which step of the loop they're watching. Total target: under five minutes to the payoff. ## The beats 1. **The ask.** Take the capability request (from the audience if offered). Check your toolset honestly — say you don't have a tool for it, and that you'll build one. 2. **Design — say it, don't subagent it.** One sentence: what the plugin is, its 1–2 tools, where state lives. Only run `plugin-architect` for genuinely non-trivial designs; the demo's pace matters more than a spec. 3. **Scaffold.** `scaffold_plugin(name, with_tests=True)` — it enables live by itself. Use a FRESH name every run (a view/router plugin can't be cleanly re-installed without a restart; never reuse a prior demo's id). 4. **Implement.** Small plugin → edit it yourself with `plugin_write_file`. Substantial → `develop_plugin` and narrate that a coding agent is now working inside your plugin dir. THE CONTRACT: `register(registry)` must **call** `registry.register_tool(...)` …
Read the whole file at its exact version.
How to install
mdr add protolabsai/protoagent/self-building-demo@sha256:cf12fbf6b2715855The line at the top of this page pins the label git:20260807.129b8eb, 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_ofgnzjqwd7jjkyyq)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Aug 7, 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 (3624 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
protolabsai/protoagent · 17 stars · license MIT · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ofgnzjqwd7jjkyyq GET https://markdownregistry.com/api/v1/resolve?ref=protolabsai/protoagent/self-building-demo GET https://markdownregistry.com/api/v1/blob/cf12fbf6b27158557214913e8b608877a27649d5e83349a786709e1c3b55cecb
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.