Writing Tests
maread99/market_prices
Instructions and guidance on writing tests. An agent skill from maread99/market_prices.
Downloads data from publicly accessible databases (FRED, World Bank, Yahoo Finance, Kaggle, etc.) or REST APIs by generating and executing custom Python scripts.
Install Universal Data Loader
$ npx skills add franklee16/academic-research-skills --skill universal-data-loader -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install franklee16/academic-research-skills universal-data-loader --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/franklee16/academic-research-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/data-sourcing/universal-data-loader .claude/skills/universal-data-loader && 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 "universal-data-loader" agent skill from https://github.com/franklee16/academic-research-skills/tree/master/data-sourcing/universal-data-loader into .claude/skills/universal-data-loader/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "universal-data-loader", 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/franklee16/academic-research-skills/tree/master/data-sourcing/universal-data-loaderType 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 franklee16/academic-research-skills --skill universal-data-loader -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install franklee16/academic-research-skills universal-data-loader --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/franklee16/academic-research-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/data-sourcing/universal-data-loader .agents/skills/universal-data-loader && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "universal-data-loader" agent skill from https://github.com/franklee16/academic-research-skills/tree/master/data-sourcing/universal-data-loader into .agents/skills/universal-data-loader/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "universal-data-loader", 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 franklee16/academic-research-skills --skill universal-data-loader -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install franklee16/academic-research-skills universal-data-loader --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/franklee16/academic-research-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/data-sourcing/universal-data-loader .cursor/skills/universal-data-loader && 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 "universal-data-loader" agent skill from https://github.com/franklee16/academic-research-skills/tree/master/data-sourcing/universal-data-loader into .cursor/skills/universal-data-loader/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "universal-data-loader", 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/franklee16/academic-research-skills.git --path data-sourcing/universal-data-loader--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 franklee16/academic-research-skills --skill universal-data-loader -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install franklee16/academic-research-skills universal-data-loader --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/franklee16/academic-research-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/data-sourcing/universal-data-loader .gemini/skills/universal-data-loader && 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 "universal-data-loader" agent skill from https://github.com/franklee16/academic-research-skills/tree/master/data-sourcing/universal-data-loader into .gemini/skills/universal-data-loader/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "universal-data-loader", 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 franklee16/academic-research-skills universal-data-loaderInstalls 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 franklee16/academic-research-skills --skill universal-data-loader -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/franklee16/academic-research-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/data-sourcing/universal-data-loader .github/skills/universal-data-loader && 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 "universal-data-loader" agent skill from https://github.com/franklee16/academic-research-skills/tree/master/data-sourcing/universal-data-loader into .github/skills/universal-data-loader/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "universal-data-loader", 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 franklee16/academic-research-skills --skill universal-data-loader -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install franklee16/academic-research-skills universal-data-loader --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/franklee16/academic-research-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/data-sourcing/universal-data-loader .opencode/skills/universal-data-loader && 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 "universal-data-loader" agent skill from https://github.com/franklee16/academic-research-skills/tree/master/data-sourcing/universal-data-loader into .opencode/skills/universal-data-loader/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "universal-data-loader", 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
universal-data-loader- GitHub stars
- 223
- Token cost
- ~738 tokens
- SKILL.md length
- 261 words
- Files
- 2 (incl. scripts)
- Skills in repo
- 1,616
- Repo updated
- First seen
- Licence
- None found
At a glance
Downloads data from publicly accessible databases (FRED, World Bank, Yahoo Finance, Kaggle, etc.) or REST APIs by generating and executing custom Python scripts.
- Works in 4 steps: Source Identification & Research → Strategy Selection → Implementation → …
- The user wants to download data from a specific source
- SKILL.md covers Workflow and Common Libraries & Snippets
- Runs Python scripts from its folder; calls pip; needs KAGGLE_KEY
What it does
Universal Data Loader is an agent skill from franklee16/academic-research-skills. Downloads data from publicly accessible databases (FRED, World Bank, Yahoo Finance, Kaggle, etc.) or REST APIs by generating and executing custom Python scripts. Use when the user wants to "download data" from a specific source or URL.
Its SKILL.md is about 740 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including scripts (for example `scripts/generic_download.py`).
It sits in Backend & APIs, covering REST APIs. It works with yfinance, Kaggle, Python and pandas. The repository describes itself as: Comprehensive collection of Claude Code skills for academic research in economics, finance, and social sciences.
When your agent uses it
- The user wants to download data from a specific source
- Tasks that involve REST APIs
Example prompts
- “download data”
- “Use the universal-data-loader skill to download data from publicly accessible databases (FRED, World Bank, Yahoo Finance, Kaggle, etc.) or REST APIs…”
- “/universal-data-loader”
Requirements
- Python 3
- A credential in KAGGLE_KEY
Workflow steps
4 steps, taken from the step headings in SKILL.md.
- Source Identification & Research
- Strategy Selection
- Implementation
- Execution & Verification
What it can do on your machine
Read from SKILL.md and the folder at commit 9a4b2db. 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.
Shell commands in SKILL.md call:
pip
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use pip, which can reach the network depending on how they are called.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names these keys or tokens, usually read from environment variables:
KAGGLE_KEY
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Universal Data Loader loads about 738 tokens when it runs. Until then it costs about 64 tokens; SKILL.md has 261 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 261 words (~738 tokens).
“This skill empowers the agent to fetch data from virtually any public source by dynamically creating and running Python scripts tailored to the specific database or API.”
- name
- universal-data-loader
Files
SKILL.md and 1 other file (scripts) in data-sourcing/universal-data-loader of franklee16/academic-research-skills.
- SKILL.md
- scripts/generic_download.py
Open the folder on GitHubat commit 9a4b2db
Compare with similar skills
Universal Data Loader 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 |
|---|---|---|---|---|---|---|
| Universal Data Loader this skillfranklee16/academic-research-skills | 223 | — | ~738 | Automated safety check: Pass | None | |
| Writing Testsmaread99/market_prices | 106 | — | ~315 | Automated safety check: Pass | MIT | |
| Dinobase Connector Builderkappa90/dinobase | 263 | — | ~1.9k | Automated safety check: Pass | Custom licence | |
| Dependencies Managementmaread99/market_prices | 106 | — | ~2.4k | Automated safety check: Notes | MIT | |
| Minute-Level Data and BacktestingHKUDS/Vibe-Trading | 35k | — | ~868 | Automated safety check: Pass | MIT | |
| Testing Mwaa Workflowaws/agent-toolkit-for-aws | 2.8k | — | ~3.8k | Automated safety check: Pass | Apache-2.0 |
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Dependencies Management
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instructions for updating and managing project dependencies (including Github actions).
Minute-Level Data and Backtesting
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Fetches minute candlesticks from OKX, Tushare or yfinance, computes intraday VWAP, TWAP and volume distribution, and runs minute-level backtests by setting an interval in config.json.
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Tests Amazon MWAA workflow execution end-to-end: trigger a run and monitor it to completion for Provisioned (Python DAG, via Airflow REST API) and Serverless (YAML workflow, via StartWorkflowRun).
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Categories
Questions about Universal Data Loader
What does Universal Data Loader do?
Downloads data from publicly accessible databases (FRED, World Bank, Yahoo Finance, Kaggle, etc.) or REST APIs by generating and executing custom Python scripts. Universal Data Loader is an agent skill from franklee16/academic-research-skills.) or REST APIs by generating and executing custom Python scripts.
When should I use Universal Data Loader?
Universal Data Loader fits situations like: the user wants to download data from a specific source; tasks that involve REST APIs.
How do I install Universal Data Loader in Claude Code?
Run `npx skills add franklee16/academic-research-skills --skill universal-data-loader -a claude-code`. Or copy the skill folder (data-sourcing/universal-data-loader in franklee16/academic-research-skills) into .claude/skills/universal-data-loader in your project. Claude Code loads it when a task matches its description.
How do I install Universal Data Loader in Codex?
Run `npx skills add franklee16/academic-research-skills --skill universal-data-loader -a codex`. Or copy the skill folder (data-sourcing/universal-data-loader in franklee16/academic-research-skills) into .agents/skills/universal-data-loader in your project. Codex loads it when a task matches its description.
Can I use Universal Data Loader 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 franklee16/academic-research-skills --skill universal-data-loader -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/universal-data-loader, .gemini/skills/universal-data-loader, .github/skills/universal-data-loader and .opencode/skills/universal-data-loader in your project.
What does Universal Data Loader need to run?
Going by SKILL.md and its folder, Universal Data Loader needs Python for the scripts in its folder, the command-line tools its instructions call (pip) and credentials named KAGGLE_KEY. Our summary lists: Python 3; A credential in KAGGLE_KEY.
Does Universal Data Loader access the network?
SKILL.md contains no URLs. Its commands use pip, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Is Universal Data Loader 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 Universal Data Loader use?
No licence was found for Universal Data Loader or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Universal Data Loader use?
About 738 tokens (SKILL.md is roughly 3k 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 Universal Data Loader?
Skills that share tags, products or a category with Universal Data Loader: Writing Tests (maread99/market_prices, 106 stars), Dinobase Connector Builder (kappa90/dinobase, 263 stars), Dependencies Management (maread99/market_prices, 106 stars) and Minute-Level Data and Backtesting (HKUDS/Vibe-Trading, 35k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Universal Data Loader?
franklee16 (a GitHub user) maintains it in franklee16/academic-research-skills, which has 223 GitHub stars. The repository holds 1,616 skills in this directory. The repository was last updated on September 18, 2026.
Source: franklee16/academic-research-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.