Upbit Market Data Skill

A CLI-based OpenClaw skill that fetches quotation/market data from the Upbit Open API.

This skill is designed to be executed via OpenClaw exec (run-once). It supports: - Trading pair (market) list - Candles (second/minute/day/week/month/year) - Recent trades - Tickers (by trading pairs / by quote currency) - Orderbooks - Watchlist tickers (from config)

All responses are JSON: - Success → stdout: { "ok": true, "result": ... } - Error → stderr: { "ok": false, "error": { ... } } and exit code 1

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Requirements

• Node.js 18+ (uses built-in fetch)
• NPM

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Installation

npm install

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Configuration (JSON)

Create config/config.json.

Example:

{
  "upbit": {
    "baseUrl": "https://api.upbit.com",
    "accessKey": "",
    "secretKey": ""
  },
  "watchlist": ["KRW-BTC", "KRW-ETH", "KRW-SOL"]
}

Config path override

Default path: - config/config.json

Override at runtime:

node skill.js tickers --markets=KRW-BTC --config=./config/config.json

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CLI Grammar

General format:

node skill.js <command> [subcommand] [--option=value]

Rules: 1. <command> is required. 2. [subcommand] is optional and MUST NOT start with --. 3. Options must be provided as --key=value or --key value. 4. Outputs are always JSON.

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STRICT MODE (Recommended for OpenClaw)

OpenClaw/LLM agents may reorder arguments when generating CLI calls. To prevent confusion, enable strict mode.

Enable strict mode

Add --strict=true to the command:

node skill.js tickers --markets=KRW-BTC,KRW-ETH --strict=true

Strict mode rules (hard requirements)

When --strict=true:

1. Candle type MUST appear immediately after candles:
2. ✅ node skill.js candles minutes --market=KRW-ETH --unit=5 --strict=true
3. ❌ node skill.js candles --market=KRW-ETH minutes --unit=5 --strict=true
4. Candle type MUST NOT be passed as an option (do not use --type= in strict mode).
5. For non-candles commands, subcommand must be omitted.
6. Any unexpected positional arguments (extra words not starting with --) will cause an error.

Why strict mode helps: - It forces a single canonical command shape, making it far harder for OpenClaw/LLM to generate ambiguous or reordered invocations.

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Commands

1) List trading pairs (markets)

node skill.js pairs --details=true --strict=true

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2) Candles (CRITICAL STRUCTURE)

Candles require a candle type immediately after candles.

Canonical structure

node skill.js candles <type> --market=<MARKET> [options]

Where <type> MUST be one of: - seconds - minutes - days - weeks - months - years

⚠️ <type> is NOT passed as --unit.
⚠️ <type> must appear immediately after candles.

Minutes candles (5-minute example)

node skill.js candles minutes --market=KRW-ETH --unit=5 --count=100 --strict=true

Allowed minute units: 1, 3, 5, 10, 15, 30, 60, 240

Other candles

node skill.js candles seconds --market=KRW-BTC --count=200 --strict=true
node skill.js candles days    --market=KRW-BTC --count=50  --strict=true
node skill.js candles weeks   --market=KRW-BTC --count=30  --strict=true
node skill.js candles months  --market=KRW-BTC --count=12  --strict=true
node skill.js candles years   --market=KRW-BTC --count=5   --strict=true

Incorrect examples (DO NOT USE)

# ❌ type passed as option
node skill.js candles --unit=minutes --market=KRW-ETH

# ❌ type after options
node skill.js candles --market=KRW-ETH minutes --unit=5

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3) Recent trades

node skill.js trades --market=KRW-BTC --count=50 --strict=true

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4) Tickers by trading pairs

node skill.js tickers --markets=KRW-BTC,KRW-ETH,KRW-SOL --strict=true

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5) Tickers by quote currency

node skill.js quote-tickers --quote=KRW,BTC --strict=true

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6) Orderbooks

node skill.js orderbook --markets=KRW-BTC --level=100000 --count=15 --strict=true

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7) Watchlist tickers (from config)

node skill.js watchlist --strict=true

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Error handling & rate limits

Upbit may respond with: - 429: Too Many Requests - 418: Request blocked - 400: Bad request

The skill passes Upbit error payloads (when present) under error.upbit.

Reference: https://docs.upbit.com/kr/reference/rest-api-guide