API Connector Builder
affaan-m/ECC
Build a new API connector or provider by matching the target repo's existing integration pattern exactly.
A skill your agent uses when a tutorial module plan exists but each module still needs a verifiable teaching loop.
No licenceAuto-check passed
Install Exercise Builder
$ npx skills add WILLOSCAR/research-units-pipeline-skills --skill exercise-builder -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install WILLOSCAR/research-units-pipeline-skills exercise-builder --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/WILLOSCAR/research-units-pipeline-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.codex/skills/exercise-builder .claude/skills/exercise-builder && 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 "exercise-builder" agent skill from https://github.com/WILLOSCAR/research-units-pipeline-skills/tree/main/.codex/skills/exercise-builder into .claude/skills/exercise-builder/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "exercise-builder", 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/WILLOSCAR/research-units-pipeline-skills/tree/main/.codex/skills/exercise-builderType 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 WILLOSCAR/research-units-pipeline-skills --skill exercise-builder -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install WILLOSCAR/research-units-pipeline-skills exercise-builder --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/WILLOSCAR/research-units-pipeline-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.codex/skills/exercise-builder .agents/skills/exercise-builder && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "exercise-builder" agent skill from https://github.com/WILLOSCAR/research-units-pipeline-skills/tree/main/.codex/skills/exercise-builder into .agents/skills/exercise-builder/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "exercise-builder", 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 WILLOSCAR/research-units-pipeline-skills --skill exercise-builder -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install WILLOSCAR/research-units-pipeline-skills exercise-builder --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/WILLOSCAR/research-units-pipeline-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.codex/skills/exercise-builder .cursor/skills/exercise-builder && 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 "exercise-builder" agent skill from https://github.com/WILLOSCAR/research-units-pipeline-skills/tree/main/.codex/skills/exercise-builder into .cursor/skills/exercise-builder/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "exercise-builder", 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/WILLOSCAR/research-units-pipeline-skills.git --path .codex/skills/exercise-builder--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 WILLOSCAR/research-units-pipeline-skills --skill exercise-builder -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install WILLOSCAR/research-units-pipeline-skills exercise-builder --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/WILLOSCAR/research-units-pipeline-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.codex/skills/exercise-builder .gemini/skills/exercise-builder && 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 "exercise-builder" agent skill from https://github.com/WILLOSCAR/research-units-pipeline-skills/tree/main/.codex/skills/exercise-builder into .gemini/skills/exercise-builder/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "exercise-builder", 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 WILLOSCAR/research-units-pipeline-skills exercise-builderInstalls 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 WILLOSCAR/research-units-pipeline-skills --skill exercise-builder -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/WILLOSCAR/research-units-pipeline-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/.codex/skills/exercise-builder .github/skills/exercise-builder && 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 "exercise-builder" agent skill from https://github.com/WILLOSCAR/research-units-pipeline-skills/tree/main/.codex/skills/exercise-builder into .github/skills/exercise-builder/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "exercise-builder", 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 WILLOSCAR/research-units-pipeline-skills --skill exercise-builder -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install WILLOSCAR/research-units-pipeline-skills exercise-builder --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/WILLOSCAR/research-units-pipeline-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.codex/skills/exercise-builder .opencode/skills/exercise-builder && 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 "exercise-builder" agent skill from https://github.com/WILLOSCAR/research-units-pipeline-skills/tree/main/.codex/skills/exercise-builder into .opencode/skills/exercise-builder/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "exercise-builder", 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
exercise-builder- GitHub stars
- 513
- Token cost
- ~311 tokens
- SKILL.md length
- 118 words
- Files
- 2 (incl. scripts)
- Skills in repo
- 107
- Repo updated
- First seen
- Licence
- None found
At a glance
A skill your agent uses when a tutorial module plan exists but each module still needs a verifiable teaching loop.
- A tutorial module plan exists but each module still needs a verifiable teaching loop
- SKILL.md covers Triggers & routing, Input, Output and Contract, plus 3 more sections
- Runs Python scripts from its folder
What it does
Exercise Builder is an agent skill from WILLOSCAR/research-units-pipeline-skills. Use when a tutorial module plan exists but each module still needs a verifiable teaching loop.
Its SKILL.md is about 310 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including scripts (for example `scripts/run.py`).
The repository describes itself as: Research pipelines as semantic execution units: each skill declares inputs/outputs, acceptance criteria, and guardrails. Evidence-first methodology prevents hollow writing…
When your agent uses it
- A tutorial module plan exists but each module still needs a verifiable teaching loop
Example prompts
- “/exercise-builder”
Requirements
- Python 3
What it can do on your machine
Read from SKILL.md and the folder at commit c92912a. 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
Ships 1 file in scripts/ (Python), which the agent can run.
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
Exercise Builder loads about 311 tokens when it runs. Until then it costs about 28 tokens; SKILL.md has 118 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); the scripts in this folder are not scanned.
SKILL.md
Without a licence we can't republish the file, so here is its outline and opening line. It has 118 words (~311 tokens).
“Adds the minimal deterministic exercise contract to each planned tutorial module.”
- name
- exercise-builder
Files
SKILL.md and 1 other file (scripts) in .codex/skills/exercise-builder of WILLOSCAR/research-units-pipeline-skills.
- SKILL.md
- scripts/run.py
Open the folder on GitHubat commit c92912a
Compare with similar skills
Exercise Builder 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 |
|---|---|---|---|---|---|---|
| Exercise Builder this skillWILLOSCAR/research-units-pipeline-skills | 513 | — | ~311 | Automated safety check: Pass | None | |
| API Connector Builderaffaan-m/ECC | 275k | 2 repos | ~666 | Automated safety check: Pass | MIT | |
| TutorialQ00/ouroboros | 6.2k | — | ~1.6k | Automated safety check: Pass | MIT | |
| Exist AutomationComposioHQ/awesome-claude-skills | 77k | 3 repos | ~723 | Automated safety check: Pass | None | |
| Es Modulesthedaviddias/Front-End-Checklist | 74k | — | ~482 | Automated safety check: Pass | MIT | |
| Tutorial Engineersickn33/agentic-awesome-skills | 47k | 2 repos | ~4.1k | Automated safety check: Pass | MIT |
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Q00/ouroboros
Interactive tutorial teaching Ouroboros hands-on. An agent skill from Q00/ouroboros.
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ComposioHQ/awesome-claude-skills
Automate Exist tasks via Rube MCP (Composio). An agent skill from ComposioHQ/awesome-claude-skills.
Es Modules
thedaviddias/Front-End-Checklist
A skill your agent uses when reviewing scripts, client components, bundles, or runtime behavior related to Use ES modules (import/export).
Tutorial Engineer
sickn33/agentic-awesome-skills
Creates step-by-step tutorials and educational content from code.
Team Builder
affaan-m/ECC
Interactive picker that discovers available agent personas via the claude agents command and agents/ markdown globs, groups them into domains, has the user select up to five, dispatches them in…
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Questions about Exercise Builder
What does Exercise Builder do?
A skill your agent uses when a tutorial module plan exists but each module still needs a verifiable teaching loop. Exercise Builder is an agent skill from WILLOSCAR/research-units-pipeline-skills. Use when a tutorial module plan exists but each module still needs a verifiable teaching loop.
When should I use Exercise Builder?
Exercise Builder fits situations like: A tutorial module plan exists but each module still needs a verifiable teaching loop.
How do I install Exercise Builder in Claude Code?
Run `npx skills add WILLOSCAR/research-units-pipeline-skills --skill exercise-builder -a claude-code`. Or copy the skill folder (.codex/skills/exercise-builder in WILLOSCAR/research-units-pipeline-skills) into .claude/skills/exercise-builder in your project. Claude Code loads it when a task matches its description.
How do I install Exercise Builder in Codex?
Run `npx skills add WILLOSCAR/research-units-pipeline-skills --skill exercise-builder -a codex`. Or copy the skill folder (.codex/skills/exercise-builder in WILLOSCAR/research-units-pipeline-skills) into .agents/skills/exercise-builder in your project. Codex loads it when a task matches its description.
Can I use Exercise Builder 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 WILLOSCAR/research-units-pipeline-skills --skill exercise-builder -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/exercise-builder, .gemini/skills/exercise-builder, .github/skills/exercise-builder and .opencode/skills/exercise-builder in your project.
What does Exercise Builder need to run?
Going by SKILL.md and its folder, Exercise Builder needs Python for the scripts in its folder. Our summary lists: Python 3.
Does Exercise Builder 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 Exercise Builder 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. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Exercise Builder use?
No licence was found for Exercise Builder or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Exercise Builder use?
About 311 tokens (SKILL.md is roughly 1.2k 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 Exercise Builder?
Skills that share tags, products or a category with Exercise Builder: API Connector Builder (affaan-m/ECC, 275k stars), Tutorial (Q00/ouroboros, 6.2k stars), Exist Automation (ComposioHQ/awesome-claude-skills, 77k stars) and Es Modules (thedaviddias/Front-End-Checklist, 74k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Exercise Builder?
WILLOSCAR (a GitHub user) maintains it in WILLOSCAR/research-units-pipeline-skills, which has 513 GitHub stars. The repository holds 107 skills in this directory. The repository was last updated on October 5, 2026.
Source: WILLOSCAR/research-units-pipeline-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.