Free, read-only US and HK stock research: event studies, stock scores, rule results and SEC filings.
Connect Remote server
claude mcp add --transport http plainquant https://plainquant.com/mcp
{
"mcpServers": {
"plainquant": {
"url": "https://plainquant.com/mcp"
}
}
}
{
"servers": {
"plainquant": {
"type": "http",
"url": "https://plainquant.com/mcp"
}
}
}
Settings > Connectors > Add custom connector
URL: https://plainquant.com/mcp
Tools 8 found in our last check
list_eventsThe events PlainQuant has history for (Fed decisions, CPI, jobs reports, US elections, quarterly options expiry, market drops), with ids, names in English and Chinese, and aliases.
event_studyFor each past occurrence of the event, the move of the market (market: US = the S&P 500 via SPY, the default for US events; HK = the Hang Seng Index, from its first close after the news; 'measured' in the answer names it) 2 weeks, 4 weeks and 3 months later (fractions: 0.037 = +…
index_move_studyLike event_study, for a move of an index found in our prices: index SPY (S&P 500), QQQ (Nasdaq-100) or HSI (Hang Seng Index) moving pct percent (signed: -10 = a fall of 10% or more) within days trading days (a fall without days = from its high). Use for 'what happens if the Nasd…
check_stocksTrend and business scores (1-100) for up to 20 US or Hong Kong stocks, the industry ranks behind them, whether each is stretched above its average, and whether the scores have predicted later returns. Accepts tickers (NVDA), HK codes (700) or company names, comma-separated.
upcoming_eventsFed decisions, CPI and jobs reports scheduled in the next days (default 30, at most 180), copied from each official calendar, each with the link to what the market did after past ones. Use for 'what market events are coming this week'.
rule_estimatesFor each of PlainQuant's library stock-picking rules (US and Hong Kong) at default settings: the plain backtest's return a year beside the honest estimate left after costs, delisted stocks and untuned test periods (fractions: 0.05 = 5% a year), the trade count and the test windo…
market_snapshotUS and Hong Kong large stocks today: how many have a strong, good, mixed or weak price trend, how many are stretched above their average, and the strongest and weakest groups by median trend. A description of today, not a forecast. Use for 'how broad is the rally' or 'which sect…
company_filingsA US stock's important SEC filings in the last days (default 30, at most 90): results, 10-Q and 10-K, officer or director changes, major agreements and deals, 5%+ stakes (13D), with links to the filings on SEC EDGAR. Takes a ticker or company name. Hong Kong is not covered.
Details
| Endpoint | https://plainquant.com/mcp (Streamable HTTP) |
| First published | 12 Nov 2026 |
| Last updated | 12 Nov 2026 |
| Registry name | com.plainquant/plainquant |
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