# f1ow > One MCP endpoint that gives Claude, ChatGPT, Cursor or your own agent live > crypto market data — spot and perp price, derivatives, on-chain, sentiment, > news and catalysts — already reconciled into one read. Read-only research and > market-data tools only; no trade execution or asset transfer. Users sign in with MetaMask, Google or GitHub, pay a 30-day stablecoin subscription (USDC/USDT on Base, Arbitrum, Polygon or Ethereum), and connect via OAuth or an API key. Autonomous agents can instead pay per call with x402. ## MCP endpoints - OAuth (Claude / ChatGPT / human connectors): https://mcp.f1ow.com/mcp - x402 pay-per-call (autonomous agents): https://mcp.f1ow.com/x402 - API key (Cursor / VS Code / custom): https://mcp.f1ow.com/ with `Authorization: Bearer ` - Transport: Streamable HTTP ## REST & WebSocket APIs The same tools, without MCP. Same credentials and metering. - REST (Bearer API key or OAuth token): https://mcp.f1ow.com/v1 — e.g. `GET /v1/derivatives/funding/BTC` - REST x402 pay-per-call: https://mcp.f1ow.com/x402/v1 - REST key in path: https://mcp.f1ow.com/key/{apikey}/v1 - WebSocket (JSON-RPC 2.0, subprotocol `jsonrpc-2.0`): wss://mcp.f1ow.com/v1/ws — MCP methods plus `subscriptions/subscribe` / `subscriptions/unsubscribe` (push on change, min 15s interval) - WebSocket key in path: wss://mcp.f1ow.com/key/{apikey}/v1/ws - OpenAPI 3.1: https://mcp.f1ow.com/openapi.json - AsyncAPI 3.0: https://mcp.f1ow.com/asyncapi.json ## Discovery - Discovery card: https://mcp.f1ow.com/.well-known/mcp.json - API catalog (RFC 9727): https://mcp.f1ow.com/.well-known/api-catalog - OAuth protected-resource (RFC 9728): https://mcp.f1ow.com/.well-known/oauth-protected-resource - OAuth authorization server (RFC 8414): https://www.f1ow.com/.well-known/oauth-authorization-server - JWKS: https://www.f1ow.com/.well-known/jwks.json ## Tools Research: research_regime, research_positioning, research_token_view, research_opportunities Market data: market_quotes, market_overview, market_top_movers, market_coins, market_candles, market_coin_details, market_trending Whale & flow: flow_whale_positions, flow_whale_context, flow_orderbook Derivatives: funding_current, derivatives_open_interest Sentiment: sentiment_fear_greed, sentiment_social, sentiment_twitter Events & catalysts: events_prediction_odds, catalysts_etf_flows, catalysts_calendar, catalysts_economic_calendar Search & filings: news_search, filings_search, ta_technicals On-chain & risk: onchain_metrics, risk_position_size Utility: providers_health, utc_time ## Links - Home: https://www.f1ow.com - Dashboard (keys & subscription): https://www.f1ow.com/dashboard - Terms: https://www.f1ow.com/terms - Privacy: https://www.f1ow.com/privacy - Refunds: https://www.f1ow.com/refunds - Support (Telegram): https://t.me/mcp_f1ow