Datajunction API
DataJunction/dj
Activate this skill when authoring DataJunction (DJ) nodes via the REST API directly (curl, HTTP clients) — typically for exploration, ad-hoc prototyping, or namespaces that aren't repo-backed.
Build a throwaway prototype under .scratch/ to answer a design question.
Install Prototype
$ npx skills add Apocrathia/home-assistant-config --skill prototype -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install Apocrathia/home-assistant-config prototype --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/Apocrathia/home-assistant-config.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/prototype .claude/skills/prototype && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "prototype" agent skill from https://github.com/Apocrathia/home-assistant-config/tree/main/.agents/skills/prototype into .claude/skills/prototype/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "prototype", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/Apocrathia/home-assistant-config/tree/main/.agents/skills/prototypeType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add Apocrathia/home-assistant-config --skill prototype -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install Apocrathia/home-assistant-config prototype --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Apocrathia/home-assistant-config.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/prototype .agents/skills/prototype && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "prototype" agent skill from https://github.com/Apocrathia/home-assistant-config/tree/main/.agents/skills/prototype into .agents/skills/prototype/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "prototype", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add Apocrathia/home-assistant-config --skill prototype -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install Apocrathia/home-assistant-config prototype --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Apocrathia/home-assistant-config.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/prototype .cursor/skills/prototype && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "prototype" agent skill from https://github.com/Apocrathia/home-assistant-config/tree/main/.agents/skills/prototype into .cursor/skills/prototype/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "prototype", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/Apocrathia/home-assistant-config.git --path .agents/skills/prototype--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add Apocrathia/home-assistant-config --skill prototype -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install Apocrathia/home-assistant-config prototype --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Apocrathia/home-assistant-config.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/prototype .gemini/skills/prototype && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "prototype" agent skill from https://github.com/Apocrathia/home-assistant-config/tree/main/.agents/skills/prototype into .gemini/skills/prototype/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "prototype", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install Apocrathia/home-assistant-config prototypeInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add Apocrathia/home-assistant-config --skill prototype -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/Apocrathia/home-assistant-config.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/prototype .github/skills/prototype && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "prototype" agent skill from https://github.com/Apocrathia/home-assistant-config/tree/main/.agents/skills/prototype into .github/skills/prototype/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "prototype", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add Apocrathia/home-assistant-config --skill prototype -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install Apocrathia/home-assistant-config prototype --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Apocrathia/home-assistant-config.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/prototype .opencode/skills/prototype && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "prototype" agent skill from https://github.com/Apocrathia/home-assistant-config/tree/main/.agents/skills/prototype into .opencode/skills/prototype/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "prototype", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
prototype- GitHub stars
- 179
- Token cost
- ~1k tokens
- SKILL.md length
- 389 words
- Files
- 1
- Skills in repo
- 22
- Repo updated
- First seen
- Licence
- None found
At a glance
Build a throwaway prototype under .scratch/ to answer a design question.
- Works in 7 steps: Throwaway and marked as such. Create… → Never throwaway under packages/. Scratch… → One command to run when there is… → …
- The user wants to sanity-check automation/state logic
- SKILL.md covers Pick a branch, Rules, Workflow and Promote vs drop, plus 1 more section
- Calls python and bash
What it does
Prototype is an agent skill from Apocrathia/home-assistant-config. Build a throwaway prototype under .scratch/ to answer a design question. Use when the user wants to sanity-check automation/state logic, explore a dashboard or notification shape, or says prototype or /prototype.
Its SKILL.md is about 1k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Development, covering Prototyping. It works with Git. The repository describes itself as: Apocrathia's Home Assistant Configuration Files.
When your agent uses it
- The user wants to sanity-check automation/state logic
- Explore a dashboard
- Notification shape
Example prompts
- “/prototype”
Requirements
- Python 3
Workflow steps
7 steps, taken from the first numbered list in SKILL.md.
- Throwaway and marked as such. Create under .scratch// with a
- Never throwaway under packages/. Scratch is not loaded by Home
- One command to run when there is runnable code (python path,
- No persistence by default. In-memory or a clearly named scratch file
- Skip the polish. No tests beyond what makes it runnable, no abstractions.
- Surface the state. After each action or variant switch, print/show the
- Capture the answer, not the junk. When done, record the verdict (what
What it can do on your machine
Read from SKILL.md and the folder at commit e28308a. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
pythonbash
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Prototype loads about 1k tokens when it runs. Until then it costs about 56 tokens; SKILL.md has 389 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Without a licence we can't republish the file, so here is its outline and opening line. It has 389 words (~1,024 tokens).
“A prototype is throwaway work that answers a question. The question decides the shape. Put it under .scratch/ — never use packages/ as a throwaway playground.”
- name
- prototype
- disable-model-invocation
- true
Files
Just SKILL.md in .agents/skills/prototype of Apocrathia/home-assistant-config.
Open the folder on GitHubat commit e28308a
Compare with similar skills
Prototype next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Prototype this skillApocrathia/home-assistant-config | 179 | — | ~1k | Automated safety check: Pass | None | |
| Datajunction APIDataJunction/dj | 161 | — | ~1.8k | Automated safety check: Pass | MIT | |
| Finishing a Development Branchobra/superpowers | 296k | 5 repos | ~1.9k | Automated safety check: Pass | MIT | |
| Code Review ChecklistshareAI-lab/learn-claude-code | 78k | 5 repos | ~1.1k | Automated safety check: Pass | MIT | |
| Codebase Knowledge Graph Q&AEgonex-AI/Understand-Anything | 86k | 1 repos | ~1.2k | Automated safety check: Pass | MIT | |
| Code Design Rationale Investigatorcursor/plugins | 10k | 9 repos | ~2.6k | Automated safety check: Pass | None |
Similar skills
Finishing a Development Branch
obra/superpowers
Walks the last step of a branch: confirm tests pass, detect the git environment, ask how to integrate, carry out your choice and clean up the worktree.
Code Review Checklist
shareAI-lab/learn-claude-code
Reviews code against a five-part checklist covering security, correctness, performance, maintainability and testing, and reports findings in a fixed format.
Codebase Knowledge Graph Q&A
Egonex-AI/Understand-Anything
Answers questions about a codebase by searching a prebuilt knowledge graph of its files, functions, classes and dependencies, not by rereading every source file.
- Official
Code Design Rationale Investigator
cursor/plugins
Digs into why code is shaped the way it is by checking git history, pull requests and connected tools in parallel, then reporting a cited read on the tradeoffs.
Understand Diff Analysis
Egonex-AI/Understand-Anything
Reads your git changes or a pull request against a prebuilt knowledge graph of the project to explain what changed, which components are affected and what is risky.
More from Apocrathia/home-assistant-config
All 22 skills in this repoReconcile Context
Apocrathia/home-assistant-config
Fix drift in Home Assistant Homelab agent context (AGENTS.md, CLAUDE.md, .agents/context/, rules, skills, agents) against the repo.
Alignment
Apocrathia/home-assistant-config
Interview the operator about a topic until shared understanding, walking each branch of the decision tree one at a time.
Architecture Review
Apocrathia/home-assistant-config
Explore packages/, layout, and .agents/ for architectural friction (coupling, shallow packages, missing boundaries) and file or recommend agent issues under docs/issues/.
Automation Debug
Apocrathia/home-assistant-config
Systematically diagnose and fix broken Home Assistant automations with a structured reproduce → triggers → conditions → actions workflow.
Config Validate
Apocrathia/home-assistant-config
Validate Home Assistant YAML configuration for syntax, structure, entity references, duplicates, and secrets usage before applying changes.
Create Agent
Apocrathia/home-assistant-config
Create a new agent persona under .agents/agents/. An agent skill from Apocrathia/home-assistant-config.
Related
Works with
Categories
Questions about Prototype
What does Prototype do?
Build a throwaway prototype under .scratch/ to answer a design question. Prototype is an agent skill from Apocrathia/home-assistant-config.scratch/ to answer a design question.
When should I use Prototype?
Prototype fits situations like: the user wants to sanity-check automation/state logic; explore a dashboard; notification shape.
How do I install Prototype in Claude Code?
Run `npx skills add Apocrathia/home-assistant-config --skill prototype -a claude-code`. Or copy the skill folder (.agents/skills/prototype in Apocrathia/home-assistant-config) into .claude/skills/prototype in your project. Claude Code loads it when a task matches its description.
How do I install Prototype in Codex?
Run `npx skills add Apocrathia/home-assistant-config --skill prototype -a codex`. Or copy the skill folder (.agents/skills/prototype in Apocrathia/home-assistant-config) into .agents/skills/prototype in your project. Codex loads it when a task matches its description.
Can I use Prototype in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add Apocrathia/home-assistant-config --skill prototype -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/prototype, .gemini/skills/prototype, .github/skills/prototype and .opencode/skills/prototype in your project.
What does Prototype need to run?
Going by SKILL.md and its folder, Prototype needs the command-line tools its instructions call (python and bash). Our summary lists: Python 3.
Does Prototype access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Prototype safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Prototype use?
No licence was found for Prototype or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Prototype use?
About 1k tokens (SKILL.md is roughly 4.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Prototype?
Skills that share tags, products or a category with Prototype: Datajunction API (DataJunction/dj, 161 stars), Finishing a Development Branch (obra/superpowers, 296k stars), Code Review Checklist (shareAI-lab/learn-claude-code, 78k stars) and Codebase Knowledge Graph Q&A (Egonex-AI/Understand-Anything, 86k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Prototype?
Apocrathia (a GitHub user) maintains it in Apocrathia/home-assistant-config, which has 179 GitHub stars. The repository holds 22 skills in this directory. The repository was last updated on September 21, 2026.
Source: Apocrathia/home-assistant-config on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.