StoQuant Pricing

Three tiers: Free ($0 forever), Pro ($29/month founding-member rate, $39/month after launch), and Power ($79/month founding-member rate, $99/month after launch). All paid plans start with a free trial — cancel anytime.

Free — $0/month

Homepage signals, methodology deep-dives, and live accuracy dashboard. No credit card required. Start Free

Pro — $29/month

Full hidden-gem screener with Benjamin Graham filters (P/E < 15, P/B < 1.5, PEG < 1.0, debt-to-equity < 0.5, current ratio > 1.5, market cap $250M–$10B, analyst coverage < 8). Unlimited custom screens, watchlists, alerts. Founding members lock $29/month for as long as the subscription stays active (regular $39/month). Start your Pro free trial

Power — $79/month

Everything in Pro plus ML alpha scores for all 3,500+ tracked stocks, Black-Litterman portfolio optimization, HMM regime probabilities, 10-K RAG risk-factor analysis, and daily retrain notifications. Founding members lock $79/month (regular $99/month). Start your Power free trial

Billing

Monthly subscription charged securely by Polar. Cancel any time from the billing portal — you keep access through the end of the billing period. See the refund policy for eligibility details.

MCP tools: free vs paid

9 of 71 tools run on a free API key (100 requests/day). The other 62 need Pro or Power. ML predictions, auto-portfolio, and backtest tools need Power. Full catalog: /mcp.

Prices

Free: get_quote, get_quotes_batch, get_extended_quote, get_sparklines, get_benchmarks, get_sector_performers. Paid: none.

Research

Free: none. Paid: get_qscore, score_ticker, compare_two_tickers, earnings_brief, compare_signal, get_signals_v2, get_ml_prediction, explain_ml_prediction, get_strategic_edges, get_quant_analytics, get_evidence.

Signals

Free: none. Paid: get_market_regime, get_signal_accuracy, get_accuracy_summary.

Discovery

Free: none. Paid: get_top_conviction, get_hidden_gems, get_multibagger_candidates, get_signal_stacks, get_related_stocks, get_signal_accuracy_heatmap, get_demand_zone, get_morning_brief, get_enablers.

Screener

Free: list_prebuilt_screens, run_prebuilt_screen, run_screener. Paid: none.

Ownership

Free: none. Paid: get_insider_trades, get_institutional_holders, get_institutional_ratings, get_analyst_estimates, get_analyst_price_targets, get_analyst_changes, get_short_interest, get_insider_cluster, get_smart_money_verdict, get_big_insider_buys.

Macro

Free: none. Paid: get_macro_indicator, get_macro_dashboard, get_macro_calendar, get_macro_themes.

Filings & news

Free: none. Paid: get_sec_filings, get_news, get_news_events.

Social

Free: none. Paid: get_social_sentiment, get_social_trend, get_trending_social, get_social_momentum, get_source_credibility.

Catalysts

Free: none. Paid: get_catalysts.

Options flow

Free: none. Paid: get_unusual_options.

Alt-data

Free: none. Paid: get_alt_signals, get_alt_data, get_catalyst_watch.

Portfolio

Free: none. Paid: portfolio_risk, get_auto_portfolio_status, get_auto_portfolio_history, get_portfolio_health, optimize_portfolio.

Backtest

Free: none. Paid: list_backtest_templates, run_backtest, get_backtest, get_backtest_history.

Strategy

Free: none. Paid: get_strategy_performance, list_strategy_presets, get_strategy_preset_candidates.

How to pay via x402 USDC

Paid MCP tools return a Payment required error that includes https://stoquant.com/pricing#mcp.

1. Mint a StoQuant API key. Free keys run the free tools at 100 requests/day.
2. Call the tool. Free-tier tools run. Paid tools return Payment required with this page's URL.
3. Open https://stoquant.com/pricing#mcp and choose Pro or Power.
4. Pay 0.10 USDC per paid tool call. Card checkout is the Get Pro / Get Power path on this page. x402 USDC: treat HTTP 402 as an x402 challenge. Pay maxAmountRequired (atomic USDC) on the stated network to payTo, then retry POST https://stoquant.com/api/mcp with the X-PAYMENT header. Direct path (no payment processor): send the 0.10 USDC on Base to payTo yourself, wait for 1 confirmation, then retry with an X-PAYMENT JSON header containing the transaction hash, e.g. {"txHash":"0x…"} — the server verifies the USDC Transfer on-chain. Developer docs: https://stoquant.com/developers. If accepts is empty, complete Pro/Power checkout here; the same key is upgraded.
5. Retry the paid tool with the same API key once settlement is verified or the account is on Pro or Power.