How do I install the Fields skill?

Run npx skillmds@latest add seokhoonj/fields in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Fields safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Fields?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Fields free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Fields?

seokhoonj (@seokhoonj) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Fields by seokhoonj — Agent Skill

Name: Fields
Author: seokhoonj

Fields

Show the columns a KRX Open API service returns -- the field (column) names of one service, in order -- offline and without a key. Holds no logic of its own -- it calls the krx-openapi package's CLI (`krx fields <group> <name>`) and shows the result to the user. Use it to see what a service returns before fetching it. Trigger phrases: 이 서비스 컬럼, KRX 필드, 무슨 컬럼 오나, what columns does, KRX field schema, what fields does this service return.

seokhoonj fc60d0f 2.2 KB Updated Sep 17, 2026

File contents

krx — a service's fields

Show the columns one KRX service returns, by the readable group name pair the Python client uses. krx fields <group> <method> prints the field (column) names in the order KRX returns them -- krx fields index kospi gives BAS_DD, IDX_CLSS, IDX_NM, CLSPRC_IDX, ... It reads a schema bundled in the krx-openapi package, so it runs offline and needs no API key.

Prerequisite

This plugin calls the krx CLI, so the package must be installed:

pipx install krx-openapi      # or: pip install krx-openapi

That puts the krx command on PATH. krx fields needs no KRX_API_KEY (it is offline) -- only the fetch skill does.

Running

krx fields <GROUP> <NAME>     # the field (column) names that service returns

GROUP NAME is the readable service pair -- index kospi, stock daily, bond treasury, ... If you don't have it, use the list skill (krx list) first.
--json emits JSON instead of the text view.

Procedure

Have the group name. If the user gave only a concept, use the list skill (krx list) to find the pair first.
Run.
```
krx fields index kospi
```
Relay the result. Show the CLI's stdout -- the column names the fetched rows will carry. Offer to hand the same group name to the fetch skill for the data.
Error handling. An unknown method exits 2 with krx: unknown service ... -- relay it and suggest krx list <group> to find the right name.

What this skill does not do

It does not re-implement the schema (the package ships it); it always calls the CLI.
It shows column names only -- to list groups and methods use the list skill, and to fetch a day's data use the fetch skill.

---name: fieldsdescription: Show the columns a KRX Open API service returns -- the field (column) names of one service, in order -- offline and without a key. Holds no logic of its own -- it calls the krx-openapi package's CLI (`krx fields <group> <name>`) and shows the result to the user. Use it to see what a service returns before fetching it. Trigger phrases: 이 서비스 컬럼, KRX 필드, 무슨 컬럼 오나, what columns does, KRX field schema, what fields does this service return.---# krx — a service's fieldsShow the columns one KRX service returns, by the readable `group name` pair the Pythonclient uses. `krx fields <group> <method>` prints the field (column) names in the orderKRX returns them -- `krx fields index kospi` gives `BAS_DD`, `IDX_CLSS`, `IDX_NM`,`CLSPRC_IDX`, ... It reads a schema **bundled in the krx-openapi package**, so it runs**offline and needs no API key**.## PrerequisiteThis plugin calls the `krx` CLI, so the package must be installed:```pipx install krx-openapi # or: pip install krx-openapi```That puts the `krx` command on PATH. `krx fields` needs **no** `KRX_API_KEY` (it isoffline) -- only the **fetch** skill does.## Running```krx fields <GROUP> <NAME> # the field (column) names that service returns```- `GROUP NAME` is the readable service pair -- `index kospi`, `stock daily`, `bond treasury`, ... If you don't have it, use the **list** skill (`krx list`) first.- `--json` emits JSON instead of the text view.## Procedure1. **Have the `group name`.** If the user gave only a concept, use the **list** skill (`krx list`) to find the pair first.2. **Run.** ```bash krx fields index kospi ```3. **Relay the result.** Show the CLI's stdout -- the column names the fetched rows will carry. Offer to hand the same `group name` to the **fetch** skill for the data.4. **Error handling.** An unknown method exits 2 with `krx: unknown service ...` -- relay it and suggest `krx list <group>` to find the right name.## What this skill does not do- It does not re-implement the schema (the package ships it); it always calls the CLI.- It shows column names only -- to list groups and methods use the **list** skill, and to fetch a day's data use the **fetch** skill.

Frequently asked questions