Developers

Hosted Model Context Protocol for agents. Endpoint: https://stoquant.com/api/mcp. Live catalog: https://stoquant.com/api/docs/mcp.json.

Live tools

23 hosted tools (5 free-tier, 18 Pro or Power). Live JSON: https://stoquant.com/api/docs/mcp.json.

• stoquant_get_qscore — Get Q-Score (Pro)
• stoquant_score_ticker — Score ticker (own signals + /proof honesty + sources[]) (Pro)
• stoquant_compare_two_tickers — Compare two tickers (own signals + /proof honesty + sources[]) (Pro)
• stoquant_earnings_brief — Earnings brief (own signals + /proof honesty + sources[]) (Pro)
• stoquant_compare_signal — Compare StoQuant signal vs street consensus (+ sources[]) (Pro)
• stoquant_get_demand_zone — Get demand-zone screener (/proof honesty) (Pro)
• stoquant_get_morning_brief — Get morning brief (/proof honesty) (Pro)
• stoquant_get_enablers — Get enablers screener (Pro)
• stoquant_describe_ticker_sources — Describe ticker sources (labels+URLs + /proof honesty) (Pro)
• stoquant_list_public_filings_meta — List public filings meta (labels+URLs + /proof honesty) (Pro)
• stoquant_get_alt_signals — Get alternative-data signals (free)
• stoquant_get_insider_buys — Get big insider buys (market-wide) (free)
• stoquant_get_catalyst_watch — Get catalyst watch (market-wide) (free)
• stoquant_top_q_scores — Top Q-Score stocks (Pro)
• stoquant_get_accuracy_summary — Get platform accuracy summary (free)
• stoquant_portfolio_risk — Portfolio risk (own metrics + /proof honesty) (Pro)
• stoquant_get_auto_portfolio_status — Get auto-portfolio status (last eval + holdings) (Power)
• stoquant_evaluate_auto_portfolio_dry — Dry-run auto-portfolio evaluation (no trades) (Power)
• stoquant_get_portfolio_health — Get portfolio-engine health report (Power)
• stoquant_list_backtest_templates — List backtest strategy templates (Power)
• stoquant_get_backtest — Get a saved backtest run (Power)
• stoquant_get_backtest_history — List past backtest runs (Power)
• stoquant_list_strategy_presets — List themed strategy presets (free)

Price per call

Paid tools: 0.10 USDC per call on Base (x402 exact scheme). Free tools stay on the free plan at 100 requests/day. A Pro or Power subscription on the same key also unlocks paid tools without a per-call payment. Catalog: https://stoquant.com/pricing#mcp.

How a client pays

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. 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, Paid plans are not available to purchase yet. Join the waitlist and we will email you when checkout opens.
5. Retry the paid tool with the same API key once settlement is verified or the account is on Pro or Power.

POST https://stoquant.com/api/mcp
Authorization: Bearer ***
Content-Type: application/json

{ "jsonrpc": "2.0", "id": 1, "method": "tools/call", "params": { "name": "stoquant_get_qscore", "arguments": { "ticker": "NVDA" } } }

# unpaid -> HTTP 402 + X-PAYMENT-REQUIRED (x402 accepts)
# retry with X-PAYMENT after settling 0.10 USDC on Base
# settled payment is verified before tool output (HTTP 200)