# K-Data — Korean Sell-Side Research & Market Data

> Korean equity research, analyst revisions, kimchi premium and news via x402.

- name: io.github.juh5ng/korea-stock-research-mcp
- version: 0.3.0
- connection class: R0 (autonomous)
- trust: 94/100
- quality: 69/100 (needs work)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/io.github.juh5ng%2Fkorea-stock-research-mcp
- tools: https://api.protogrid.dev/v1/servers/io.github.juh5ng%2Fkorea-stock-research-mcp/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "korea-stock-research-mcp": {
      "type": "http",
      "url": "https://k-data-x402-production.theblack1022.workers.dev/mcp"
    }
  }
}
```


## Trust

- hygiene: 100
- liveness: 99
- freshness: 85
- provenance: 90
- drivers: +repository +namespace-matches-repo +website +reachable +uptime-97% ~updated-45d-ago
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 69/100 (needs work)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-06-18; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 71 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- fail `tools.annotations`: no tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: kimchi_premium (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); research_company_ticker (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); news_headlines_en (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …
- pass `tools.token_cost`: about 1,917 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 75 (weight 15)

- warn `stability.changes`: 7 tool changes in 30 days
- pass `stability.rug_pull`: no tool changed its meaning under the same name

### dependencies: 50 (weight 15)

- warn `deps.known_vulns`: 1 advisory of lower severity or without a published fix: GHSA-5r4p-p66f-jhc7 in hono@4.13.9 (indirect, fixed in 4.13.11)
- fail `deps.mcp_sdk_version`: @modelcontextprotocol/sdk 1.30.1 has 3 known advisories (GHSA-22jm-h49p-29qw, GHSA-6prh-2h8m-c8cw, GHSA-6qxp-vccf-f47h); update @modelcontextprotocol/sdk to 1.32.0 or later
- pass `deps.resolvable`: k-data-mcp@0.3.0 resolved: 116 packages

- tools: 16, about 1,917 tokens to load them all
- tool set hash: 590b4b6509eeee08efc561f46bf8e4ef
- tools last changed: 2026-10-03T10:56:22.909Z
- badge: [![protogrid quality](https://protogrid.dev/badge/io.github.juh5ng/korea-stock-research-mcp.svg)](https://protogrid.dev/servers/io.github.juh5ng/korea-stock-research-mcp)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-03 `kimchi_premium_history` changed (description, inputSchema)
  - before: Time 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.
  - after: Time series of the kimchi premium from the recorded archive, both bases, newest-last. Params: ?symbol=BTC &window=1h|6h|24h|7d|30d|90d &points=500 (max 2000) &before=<next_before>. Each page is a separate paid request. Continue while has_more is true using next_before. Inspect actual archive depth and freshness through /api/preview/premium-coverage before buying. Costs $0.08 in USDC per call, settled via x402.
- 2026-10-03 `kimchi_premium_stats` changed (description)
  - before: Where 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.
  - after: Where 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 the recorded archive; inspect actual dates and freshness with the free coverage endpoint. Params: ?symbol=BTC &window=1h|6h|24h|7d|30d|90d &basis=usdt|official. Costs $0.12 in USDC per call, settled via x402.
- 2026-10-03 `kimchi_premium` changed (description)
  - before: Kimchi 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.
  - after: Kimchi premium on two bases: premium_official_pct (official USD/KRW rate — the quoted figure) and premium_usdt_pct (Upbit KRW/USDT rate — a gross spot-price comparison using KRW/USDT conversion, before spreads, fees, liquidity and transfer constraints). The two frequently disagree in sign. Optional ?symbols=BTC,ETH (max 10). Costs $0.03 in USDC per call, settled via x402.
- 2026-10-03 `preview_kimchi_premium` added
  - Free live BTC-only sample of the dual-basis kimchi premium. Use the paid endpoint for up to 10 symbols.
- 2026-10-03 `preview_research` added
  - Free, date-stamped archive-depth check for one 6-digit KRX ticker. Shows report and brokerage counts, not report content or consensus.
- 2026-10-03 `preview_research_coverage` added
  - Free, date-stamped KRX research coverage. Lists the most-covered tickers with report count, brokerage count, and archive date range; it does not reveal report content.
- 2026-10-03 `preview_premium_coverage` added
  - Free archive coverage and freshness for each recorded coin. Check sample count, first and latest timestamps, and stale flag before buying premium statistics or history.

Full history: https://api.protogrid.dev/v1/servers/io.github.juh5ng%2Fkorea-stock-research-mcp/changes

## Dependencies

- npm k-data-mcp@0.3.0: resolved, 115 dependencies, MCP SDK @modelcontextprotocol/sdk 1.30.1
  - GHSA-22jm-h49p-29qw (high) in `` @modelcontextprotocol/sdk@1.30.1 ``, direct, fixed in `` 1.32.0 ``, advisory summary: "MCP TypeScript SDK: Experimental tasks were not tied to the session that created them" https://osv.dev/vulnerability/GHSA-22jm-h49p-29qw
  - GHSA-6qxp-vccf-f47h (high) in `` @modelcontextprotocol/sdk@1.30.1 ``, direct, fixed in `` 1.31.0 ``, advisory summary: "MCP TypeScript SDK: OAuth client could send credentials to an authorization server chosen by the MCP server" https://osv.dev/vulnerability/GHSA-6qxp-vccf-f47h
  - GHSA-6prh-2h8m-c8cw (moderate) in `` @modelcontextprotocol/sdk@1.30.1 ``, direct, fixed in `` 1.32.0 ``, advisory summary: "MCP TypeScript client SDK: HTTP client transports and OAuth requests followed cross-origin redirects and re-sent custom headers and request bodies" https://osv.dev/vulnerability/GHSA-6prh-2h8m-c8cw
  - GHSA-5r4p-p66f-jhc7 (moderate) in `` hono@4.13.9 ``, indirect, fixed in `` 4.13.11 ``, advisory summary: "Hono: \`serveStatic\` decodes the request path a second time, leading to bypass of middleware on static paths" https://osv.dev/vulnerability/GHSA-5r4p-p66f-jhc7

Dependency graphs from deps.dev; advisories from OSV.dev, including the GitHub Advisory Database and the PyPI Advisory Database; all CC BY 4.0.

## Remotes

- https://k-data-x402-production.theblack1022.workers.dev/mcp (streamable-http, auth none, reachable true, uptime30d 0.9745763)

## Packages

- npm k-data-mcp@0.3.0 secrets: K_DATA_PRIVATE_KEY

## Tools (16)

- `crypto_krw_markets`: Snapshot 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.
- `crypto_krw_ticker`: Live 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.
- `fx_usdkrw`: Current USD/KRW exchange rate (ECB reference via Frankfurter, fallback open.er-api.com). Costs $0.005 in USDC per call, settled via x402.
- `kimchi_premium`: Kimchi premium on two bases: premium_official_pct (official USD/KRW rate — the quoted figure) and premium_usdt_pct (Upbit KRW/USDT rate — a gross spot-price comparison using KRW/USDT conversion, before spreads, fees, liquidity and transfer constraints). The two frequently disagree in sign. Optional ?symbols=BTC,ETH (max 10). Costs $0.03 in USDC per call, settled via x402.
- `kimchi_premium_history`: Time series of the kimchi premium from the recorded archive, both bases, newest-last. Params: ?symbol=BTC &window=1h|6h|24h|7d|30d|90d &points=500 (max 2000) &before=<next_before>. Each page is a separate paid request. Continue while has_more is true using next_before. Inspect actual archive depth and freshness through /api/preview/premium-coverage before buying. Costs $0.08 in USDC per call, settled via x402.
- `kimchi_premium_stats`: Where 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 the recorded archive; inspect actual dates and freshness with the free coverage endpoint. Params: ?symbol=BTC &window=1h|6h|24h|7d|30d|90d &basis=usdt|official. Costs $0.12 in USDC per call, settled via x402.
- `korea_market_snapshot`: One-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.
- `news_headlines`: Latest 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.
- `news_headlines_en`: Latest 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.
- `preview_kimchi_premium`: Free live BTC-only sample of the dual-basis kimchi premium. Use the paid endpoint for up to 10 symbols.
- `preview_premium_coverage`: Free archive coverage and freshness for each recorded coin. Check sample count, first and latest timestamps, and stale flag before buying premium statistics or history.
- `preview_research`: Free, date-stamped archive-depth check for one 6-digit KRX ticker. Shows report and brokerage counts, not report content or consensus.
- `preview_research_coverage`: Free, date-stamped KRX research coverage. Lists the most-covered tickers with report count, brokerage count, and archive date range; it does not reveal report content.
- `research_company_ticker`: Every 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.
- `research_consensus_ticker`: Analyst 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.
- `research_latest`: Latest 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.