K-Data — Korean Sell-Side Research & Market Data
https://k-data-x402-production.theblack1022.workers.dev/mcp ↗
Description
Korean equity research, analyst revisions, kimchi premium and news via x402.
What our measurements say
K-Data — Korean Sell-Side Research & Market Data is a remote MCP server published at k-data-x402-production.theblack1022.workers.dev. It has been probed 14 times since 9/12/2026. It answered in 14 of them (100.0%), a near-uninterrupted record. Median response time is 259 ms, placing it among the faster endpoints. It offers a narrow, focused set of 12 tools. On the protocol side it still runs 2025-11-25 and has not moved to the newer spec.
Agent readability score
Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.
Agent readability score
Strengths
- Tool names are specific to their domain (e.g., 'kimchi_premium_stats')
- Descriptions include use-case context (e.g., 'answers 'is this premium unusual'?')
- Costs and constraints are explicitly mentioned for paid tools
Weaknesses
- Some parameters lack clear default values (e.g., 'symbols' in kimchi_premium)
- News tools (headlines vs headlines_en) have overlapping purposes
- Parameter types like 'window' use non-standard format strings without examples
kimchi_premium— Symbols parameter lacks default value explanationnews_headlines— Overlaps with news_headlines_en for Korean news deliverykimchi_premium_history— 'window' parameter format strings lack examples
Verdict
Event narrative
Risk: low
Advice
Schema compliance
tools/list structure, inputSchema validity, and a functional smoke test — the components of the 0-100 score.
- tools/list schema valid
- inputSchema is valid JSON Schema
- Smoke test not run this round
- Cold-start: cold 50ms → warm 42ms (penalty 8ms)
Tools
Tools the server advertised in the latest measurement — measured, not catalog-claimed.
kimchi_premiumKimchi premium on two bases: premium_official_pct (official USD/KRW rate — the quoted figure) and premium_usdt_pct (Upbit KRW/USDT rate — the margin actually realizable, since the KRW exit leg goes through USDT rather than banks). The two frequently disagree in sign. Optional ?symbols=BTC,ETH (max 10). Costs $0.03 in USDC per call, settled via x402.
symbolsstring
kimchi_premium_statsWhere the current kimchi premium sits inside its own recent distribution: percentile, mean, stdev, z-score, min/max/median, and a plain-language read. Answers 'is this premium unusual right now?' in one call. Built from a continuous archive that cannot be reconstructed from any free source. Params: ?symbol=BTC &window=1h|6h|24h|7d|30d|90d &basis=usdt|official. Costs $0.12 in USDC per call, settled via x402.
symbolstringwindowstringbasisstring
kimchi_premium_historyTime series of the kimchi premium from the continuous archive, both bases, newest-last. Params: ?symbol=BTC &window=1h|6h|24h|7d|30d|90d &points=500 (max 2000). Archive depth is reported as first_recorded. Costs $0.08 in USDC per call, settled via x402.
symbolstringwindowstringpointsinteger
research_consensus_tickerAnalyst consensus for one KRX ticker, built from the archived research history: mean/median/min/max target price across brokerages, the spread between them, the rating distribution, and a revision log of every target-price and rating change each house has made. Consensus uses each house's latest view, so a weekly publisher does not outvote a quarterly one. Params: ?window=30d|90d|180d|365d (default 90d). Costs $0.12 in USDC per call, settled via x402.
tickerstringrequiredwindowstring
research_company_tickerEvery archived Korean brokerage report for one KRX ticker, newest first: target price, rating, brokerage, analyst, the Korean title with its English translation, and a one-line English summary. Params: ?limit=20 (max 50). Costs $0.05 in USDC per call, settled via x402.
tickerstringrequiredlimitinteger
research_latestLatest Korean brokerage equity research across all covered companies, newest first — company and KRX ticker, target price, rating, brokerage, analyst, and a one-line English summary of each report. Facts and summaries only; the report PDF stays with its publisher and source_url links back to it. Optional ?limit=20 (max 50). Costs $0.02 in USDC per call, settled via x402.
limitinteger
news_headlines_enLatest Korean headlines with English translations attached (title_en), from Yonhap, Maeil Business and Hankyung — deduplicated, newest first. Use this instead of the Korean-only route when the consuming agent does not read Korean. Optional ?category=top|economy|tech|politics and ?limit=20 (max 50). Costs $0.05 in USDC per call, settled via x402.
categorystringlimitinteger
korea_market_snapshotOne-call Korea briefing: dual-basis kimchi premium + top Upbit KRW markets + USD/KRW + latest economy headlines translated to English. Everything needed for a Korea market read in a single paid request. Costs $0.08 in USDC per call, settled via x402.
crypto_krw_marketsSnapshot of all Upbit KRW crypto markets: top by 24h traded value, top gainers, top losers. Optional ?limit=30 (max 100) for the volume ranking. Costs $0.01 in USDC per call, settled via x402.
limitinteger
news_headlinesLatest Korean headlines from Yonhap, Maeil Business and Hankyung, deduplicated and newest-first. Titles stay in Korean — use /api/news/headlines/en for English. Optional ?category=top|economy|tech|politics and ?limit=30 (max 100). Costs $0.01 in USDC per call, settled via x402.
categorystringlimitinteger
crypto_krw_tickerLive quote for one Upbit KRW market by ticker symbol (e.g. BTC, ETH, XRP): price, 24h change, 24h high/low, 24h traded value in KRW. Costs $0.005 in USDC per call, settled via x402.
tickerstringrequired
fx_usdkrwCurrent USD/KRW exchange rate (ECB reference via Frankfurter, fallback open.er-api.com). Costs $0.005 in USDC per call, settled via x402.
Availability history
Event log
Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.
- Added to watch — era: Legacy
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