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Agent skill

Jel Classification System

by brycewang-stanford in brycewang-stanford/Awesome-Journal-Skills

A skill your agent uses when assigning JEL classification codes to a Journal of Economic Literature (JEL) survey and relating the survey to the JEL code taxonomy that the journal itself maintains.

MITAuto-check passedWriting & Content

Install Jel Classification System

skills CLI
$ npx skills add brycewang-stanford/Awesome-Journal-Skills --skill jel-classification-system -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install brycewang-stanford/Awesome-Journal-Skills jel-classification-system --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/brycewang-stanford/Awesome-Journal-Skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/Journal-of-Economic-Literature-Skills/skills/jel-classification-system .claude/skills/jel-classification-system && rm -rf skills-src

Use ~/.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/

Facts

Skill name
jel-classification-system
GitHub stars
1.2k
Token cost
~1.3k tokens
SKILL.md length
639 words
Files
1
Skills in repo
2,387
Repo updated
First seen
Licence
MIT

At a glance

A skill your agent uses when assigning JEL classification codes to a Journal of Economic Literature (JEL) survey and relating the survey to the JEL code taxonomy that the journal itself maintains.

  • Works in 5 steps: Find the field's home category first… → Lead with the field's primary detailed… → Mirror the organizing framework. The… → …
  • Tasks that involve Brand voice and tone
  • SKILL.md covers When to trigger, What the JEL classification…, Assigning codes to a survey and Checklist, plus 2 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Jel Classification System is an agent skill from brycewang-stanford/Awesome-Journal-Skills. Use when assigning JEL classification codes to a Journal of Economic Literature (JEL) survey and relating the survey to the JEL code taxonomy that the journal itself maintains. Explains and applies the codes correctly; it does not write prose (jel-writing-style) or run the submission preflight (jel-submission).

Its SKILL.md is about 1.3k 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 Writing & Content, covering Brand voice and tone. The repository describes itself as: Journal-specific Claude Code/Codex skill packs covering mainstream journals — AER, QJE, Nature, Cell, 管理世界, 经济研究 & 200+ more — your fast track to getting published. ｜ 覆盖主流期刊的… The licence is MIT.

When your agent uses it

  • Tasks that involve Brand voice and tone

Example prompts

  • “/jel-classification-system”

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

  1. Find the field's home category first (the letter), then the subcategory, then detailed codes — top-down, so you do not miss the natural…
  2. Lead with the field's primary detailed code, then add codes for the methods and adjacent fields the survey substantively covers (a survey…
  3. Mirror the organizing framework. The codes should look like the survey's cells: if a section covers an econometric method the field relies…
  4. Cross-check against the EconLit code list for the exact current label and three-character code — labels and codes are revised; do not…
  5. Confirm count/format limits for the manuscript in the AEA JEL style guide via jel-submission (JEL codes are commonly listed with keywords…

What it can do on your machine

Read from SKILL.md and the folder at commit 932eb23. 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

    No scripts in the folder and no shell commands in SKILL.md.

    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

Jel Classification System loads about 1.3k tokens when it runs. Until then it costs about 85 tokens; SKILL.md has 639 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~85
When it runs · the whole SKILL.md, loaded when a task matches
~1.3k

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

The full file from brycewang-stanford/Awesome-Journal-Skills at commit 932eb23, republished under its MIT licence (© brycewang-stanford). 639 words, ~1,312 tokens.

Download SKILL.mdSave it as .claude/skills/jel-classification-system/SKILL.md (or your agent's skills folder).
name
jel-classification-system
description
Use when assigning JEL classification codes to a Journal of Economic Literature (JEL) survey and relating the survey to the JEL code taxonomy that the journal itself maintains. Explains and applies the codes correctly; it does not write prose (jel-writing-style) or run the submission preflight (jel-submission).

JEL Classification System (jel-classification-system)

When to trigger

  • The survey is drafted and you must assign JEL classification codes for submission
  • You are unsure how many codes, at what level, or in what order to list them
  • You want the survey's scope to map cleanly onto the JEL taxonomy a reader uses to find it
  • You are reasoning about which JEL category the field you are surveying actually sits in

What the JEL classification system is (and why JEL owns it)

The JEL classification system is the American Economic Association's subject taxonomy for economics, maintained by the Journal of Economic Literature itself and used across EconLit and most economics journals. A survey for JEL therefore has a dual relationship with the codes: it must be indexed by them like any paper, and — because JEL is the system's steward — a well-scoped survey often corresponds to one or a small set of categories that define its field.

Structure (检索于 2026-06；以官网为准):

  • Three levels. A single letter (20 top categories), a two-digit subcategory (e.g. J2), and a three-character detailed code (e.g. J24).
  • Assign detailed three-character codes for a submission; the letter/two-digit levels locate the field.

The 20 top-level categories:

A General Economics & TeachingB History of Thought / Methodology / HeterodoxC Mathematical & Quantitative MethodsD Microeconomics
E Macroeconomics & MonetaryF International EconomicsG Financial EconomicsH Public Economics
I Health, Education & WelfareJ Labor & Demographic EconomicsK Law & EconomicsL Industrial Organization
M Business Admin / Marketing / Accounting / PersonnelN Economic HistoryO Development, Innovation, GrowthP Political Economy & Comparative Systems
Q Agricultural, Resource & EnvironmentalR Urban, Rural, Regional, Real Estate, TransportY MiscellaneousZ Other Special Topics

Assigning codes to a survey

  1. Find the field's home category first (the letter), then the subcategory, then detailed codes — top-down, so you do not miss the natural primary code.
  2. Lead with the field's primary detailed code, then add codes for the methods and adjacent fields the survey substantively covers (a survey is broader than a paper, so a handful of codes is normal).
  3. Mirror the organizing framework. The codes should look like the survey's cells: if a section covers an econometric method the field relies on, include the relevant C code; if it spans into public economics, include the H code.
  4. Cross-check against the EconLit code list for the exact current label and three-character code — labels and codes are revised; do not assign from memory (检索于 2026-06；以官网为准).
  5. Confirm count/format limits for the manuscript in the AEA JEL style guide via jel-submission (JEL codes are commonly listed with keywords on the title page).
Show full SKILL.md (211 more words)Show less

Because JEL maintains the classification system, a survey is in an unusual position: it can illuminate where a field sits in the taxonomy, and occasionally a maturing field's survey is part of the case that a code's scope should be reconsidered. You are not assigning codes from outside the system — you are working inside the AEA's own subject map, so get the codes exactly right.

Checklist

  • Primary detailed (three-character) code identified top-down (letter → two-digit → detailed)
  • Method codes (e.g. C) and adjacent-field codes added where the survey substantively covers them
  • Code set mirrors the organizing framework's cells (not a random scatter)
  • Each code verified against the current EconLit JEL code list (label + three-character form)
  • Primary code listed first; codes ordered by centrality to the survey
  • Count/format limits confirmed in the AEA JEL style guide (via jel-submission)
  • Not over-coding: only categories the survey genuinely covers

Anti-patterns

  • Assigning only a single broad letter-level code to a wide-ranging survey (under-indexing)
  • Scattering a dozen codes for fields the survey barely touches (over-indexing)
  • Inventing or mis-remembering three-character codes instead of checking the live EconLit list
  • Codes that contradict the organizing framework (the survey's own map of its scope)
  • Treating the codes as an afterthought rather than a true description of the field's place in economics

Output format

【Field home】<letter> → <two-digit> → <primary detailed code>
【Code set】<primary code first, then method + adjacent-field codes>
【Framework mirror】codes match the survey's cells? Y/N
【Verification】each code checked on current EconLit list? Y/N
【Format】count/placement confirmed in AEA JEL style guide? Y/N
【Next step】→ jel-editor-strategy / jel-submission (codes go on the title page with keywords)

© brycewang-stanford, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in Journal-of-Economic-Literature-Skills/skills/jel-classification-system of brycewang-stanford/Awesome-Journal-Skills.

Open the folder on GitHubat commit 932eb23

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Categories

Questions about Jel Classification System

What does Jel Classification System do?

A skill your agent uses when assigning JEL classification codes to a Journal of Economic Literature (JEL) survey and relating the survey to the JEL code taxonomy that the journal itself maintains. Jel Classification System is an agent skill from brycewang-stanford/Awesome-Journal-Skills. Use when assigning JEL classification codes to a Journal of Economic Literature (JEL) survey and relating the survey to the JEL code taxonomy that the journal itself maintains.

When should I use Jel Classification System?

Jel Classification System fits situations like: tasks that involve Brand voice and tone.

How do I install Jel Classification System in Claude Code?

Run `npx skills add brycewang-stanford/Awesome-Journal-Skills --skill jel-classification-system -a claude-code`. Or copy the skill folder (Journal-of-Economic-Literature-Skills/skills/jel-classification-system in brycewang-stanford/Awesome-Journal-Skills) into .claude/skills/jel-classification-system in your project. Claude Code loads it when a task matches its description.

How do I install Jel Classification System in Codex?

Run `npx skills add brycewang-stanford/Awesome-Journal-Skills --skill jel-classification-system -a codex`. Or copy the skill folder (Journal-of-Economic-Literature-Skills/skills/jel-classification-system in brycewang-stanford/Awesome-Journal-Skills) into .agents/skills/jel-classification-system in your project. Codex loads it when a task matches its description.

Can I use Jel Classification System 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 brycewang-stanford/Awesome-Journal-Skills --skill jel-classification-system -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/jel-classification-system, .gemini/skills/jel-classification-system, .github/skills/jel-classification-system and .opencode/skills/jel-classification-system in your project.

What does Jel Classification System need to run?

SKILL.md names no scripts, command-line tools or credentials: Jel Classification System is instructions for the agent only.

Does Jel Classification System 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 Jel Classification System 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 Jel Classification System use?

Jel Classification System is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Jel Classification System use?

About 1.3k tokens (SKILL.md is roughly 5.2k 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 Jel Classification System?

Skills that share tags, products or a category with Jel Classification System: Avoid AI Writing (conorbronsdon/avoid-ai-writing, 4.9k stars), Khazix WeChat Article Writer (KKKKhazix/khazix-skills, 21k stars), Brand (Ohh-889/skyroc, 795 stars) and Writing Guidelines (vercel-labs/agent-skills, 32k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Jel Classification System?

brycewang-stanford (a GitHub user) maintains it in brycewang-stanford/Awesome-Journal-Skills, which has 1,219 GitHub stars. The repository holds 2,387 skills in this directory. The repository was last updated on September 27, 2026.

Source: brycewang-stanford/Awesome-Journal-Skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.